<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with WebFilings-->
<linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <roleRef roleURI="http://www.omnicell.com/role/AccruedLiabilities" xlink:href="omcl-20120331.xsd#AccruedLiabilities" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/CashAndCashEquivalentsShortTermInvestmentsAndFairValueOfFinancialInstruments" xlink:href="omcl-20120331.xsd#CashAndCashEquivalentsShortTermInvestmentsAndFairValueOfFinancialInstruments" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/Commitments" xlink:href="omcl-20120331.xsd#Commitments" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/CondensedConsolidatedBalanceSheets" xlink:href="omcl-20120331.xsd#CondensedConsolidatedBalanceSheets" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:href="omcl-20120331.xsd#CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:href="omcl-20120331.xsd#CondensedConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:href="omcl-20120331.xsd#CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/CondensedConsolidatedStatementsOfOperations" xlink:href="omcl-20120331.xsd#CondensedConsolidatedStatementsOfOperations" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/Contingencies" xlink:href="omcl-20120331.xsd#Contingencies" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/DeferredGrossProfit" xlink:href="omcl-20120331.xsd#DeferredGrossProfit" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/DocumentAndEntityInformationDocumentAndEntityInformation" xlink:href="omcl-20120331.xsd#DocumentAndEntityInformationDocumentAndEntityInformation" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/GoodwillAndOtherIntangibleAssets" xlink:href="omcl-20120331.xsd#GoodwillAndOtherIntangibleAssets" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/Inventories" xlink:href="omcl-20120331.xsd#Inventories" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/NetIncomePerShare" xlink:href="omcl-20120331.xsd#NetIncomePerShare" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/NetInvestmentInSalesTypeLeases" xlink:href="omcl-20120331.xsd#NetInvestmentInSalesTypeLeases" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/OrganizationAndSummaryOfSignificantAccountingPolicies" xlink:href="omcl-20120331.xsd#OrganizationAndSummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/PropertyAndEquipment" xlink:href="omcl-20120331.xsd#PropertyAndEquipment" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/StockOptionPlansAndShareBasedCompensation" xlink:href="omcl-20120331.xsd#StockOptionPlansAndShareBasedCompensation" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/StockholdersEquity" xlink:href="omcl-20120331.xsd#StockholdersEquity" xlink:type="simple" />
  <roleRef roleURI="http://www.omnicell.com/role/SubsequentEvent" xlink:href="omcl-20120331.xsd#SubsequentEvent" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple" />
  <presentationLink xlink:role="http://www.omnicell.com/role/AccruedLiabilities" xlink:type="extended">
    <loc xlink:href="omcl-20120331.xsd#omcl_AccruedLiabilitiesDisclosure" xlink:label="loc_omcl_AccruedLiabilitiesDisclosure_527F98115F957F19E0521726536C68C5" xlink:type="locator" />
    <loc xlink:href="omcl-20120331.xsd#omcl_AccruedLiabilitiesTextBlock" xlink:label="loc_omcl_AccruedLiabilitiesTextBlock_9C21BB38FE67128362A47AA0BF30BD8B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_omcl_AccruedLiabilitiesDisclosure_527F98115F957F19E0521726536C68C5" xlink:to="loc_omcl_AccruedLiabilitiesTextBlock_9C21BB38FE67128362A47AA0BF30BD8B" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/CashAndCashEquivalentsShortTermInvestmentsAndFairValueOfFinancialInstruments" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_A8EE4D2A543137AE46D2172651D07825" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsDisclosureTextBlock" xlink:label="loc_us-gaap_CashAndCashEquivalentsDisclosureTextBlock_509D9D55DF435D4F22B2172651D13301" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_A8EE4D2A543137AE46D2172651D07825" xlink:to="loc_us-gaap_CashAndCashEquivalentsDisclosureTextBlock_509D9D55DF435D4F22B2172651D13301" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/Commitments" xlink:type="extended">
    <loc xlink:href="omcl-20120331.xsd#omcl_Commitments" xlink:label="loc_omcl_Commitments_31A5EA4158B2D5C4A945172654207921" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommitmentsDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsDisclosureTextBlock_C53F5917D0D8C236CD7F17265420F828" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_omcl_Commitments_31A5EA4158B2D5C4A945172654207921" xlink:to="loc_us-gaap_CommitmentsDisclosureTextBlock_C53F5917D0D8C236CD7F17265420F828" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_E011CB1D15201394687817264FC0FC59" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_63D99B6E51604345B6DC17264FC012FF" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_E011CB1D15201394687817264FC0FC59" xlink:to="loc_us-gaap_StatementTable_63D99B6E51604345B6DC17264FC012FF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_8FDE78312FD0976DEFE117264FC0EB5D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_63D99B6E51604345B6DC17264FC012FF" xlink:to="loc_us-gaap_StatementScenarioAxis_8FDE78312FD0976DEFE117264FC0EB5D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_23FEDD86ABCD3EF5871C17264FC039EA" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_8FDE78312FD0976DEFE117264FC0EB5D" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_23FEDD86ABCD3EF5871C17264FC039EA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_9B88E8D866D3A28251AE17264FC09B67" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_63D99B6E51604345B6DC17264FC012FF" xlink:to="loc_us-gaap_StatementLineItems_9B88E8D866D3A28251AE17264FC09B67" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_9B88E8D866D3A28251AE17264FC09B67" xlink:to="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:to="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_7F2A856F59504314A7D117264FC05C8B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_7F2A856F59504314A7D117264FC05C8B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShortTermInvestments" xlink:label="loc_us-gaap_ShortTermInvestments_BB5ACDEE7A0570F0D5BA17264FC0E3DD" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:to="loc_us-gaap_ShortTermInvestments_BB5ACDEE7A0570F0D5BA17264FC0E3DD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_25A1EEAB65C3A2DBE8CE17264FC0D79F" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_25A1EEAB65C3A2DBE8CE17264FC0D79F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_412B750427C5D5CBEC7717264FC1C3F4" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:to="loc_us-gaap_InventoryNet_412B750427C5D5CBEC7717264FC1C3F4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_8EA2173049530672DB5F17264FC17286" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_8EA2173049530672DB5F17264FC17286" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsNetCurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetCurrent_E851681C8F95DFB95C5817264FC1C80C" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:to="loc_us-gaap_DeferredTaxAssetsNetCurrent_E851681C8F95DFB95C5817264FC1C80C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaap_OtherAssetsCurrent_6BE1ACAC70E3E8FCD74817264FC114E4" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:to="loc_us-gaap_OtherAssetsCurrent_6BE1ACAC70E3E8FCD74817264FC114E4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_F7B7B6D1931514DF83D717264FC163EC" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_41FD48A1BE2FC4E9547F17264FC02109" xlink:to="loc_us-gaap_AssetsCurrent_F7B7B6D1931514DF83D717264FC163EC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_A94B4C0A16632B1F420A17264FC1B2D2" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_A94B4C0A16632B1F420A17264FC1B2D2" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_NoncurrentNetInvestmentInSalesTypeLeases" xlink:label="loc_omcl_NoncurrentNetInvestmentInSalesTypeLeases_89EE4545A5CAED4E528517264FC14FCC" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:to="loc_omcl_NoncurrentNetInvestmentInSalesTypeLeases_89EE4545A5CAED4E528517264FC14FCC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_B77CD2688FC9D451600517264FC1BB5D" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:to="loc_us-gaap_Goodwill_B77CD2688FC9D451600517264FC1BB5D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_EA43FC02BD033BF8ABF317264FC1E237" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_EA43FC02BD033BF8ABF317264FC1E237" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_31B5A7E7DAADC0283C9B17264FC11643" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:to="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_31B5A7E7DAADC0283C9B17264FC11643" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_4AD8F25186990FEAA81317264FC1FB47" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_4AD8F25186990FEAA81317264FC1FB47" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_A9009AB363886F2248BE17264FC15B8F" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_5FB4A32DE4DA4BEEEFE017264FC0A4DD" xlink:to="loc_us-gaap_Assets_A9009AB363886F2248BE17264FC15B8F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_176BD26DA98005DFD43617264FC1B032" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_9B88E8D866D3A28251AE17264FC09B67" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_176BD26DA98005DFD43617264FC1B032" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_7D9764994F1DD0AD221E17264FC1CE7A" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_176BD26DA98005DFD43617264FC1B032" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_7D9764994F1DD0AD221E17264FC1CE7A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_A7E1598E2B69037C05FB17264FC1A280" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_7D9764994F1DD0AD221E17264FC1CE7A" xlink:to="loc_us-gaap_AccountsPayableCurrent_A7E1598E2B69037C05FB17264FC1A280" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_60D336B5F516F126E5CC17264FC11772" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_7D9764994F1DD0AD221E17264FC1CE7A" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_60D336B5F516F126E5CC17264FC11772" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_5E8F6BF52E6BBE239E9117264FC15187" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_7D9764994F1DD0AD221E17264FC1CE7A" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_5E8F6BF52E6BBE239E9117264FC15187" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_DeferredServiceRevenue" xlink:label="loc_omcl_DeferredServiceRevenue_8EFEE815DBF0B766D9C117264FC19D8A" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_7D9764994F1DD0AD221E17264FC1CE7A" xlink:to="loc_omcl_DeferredServiceRevenue_8EFEE815DBF0B766D9C117264FC19D8A" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_DeferredGrossProfit" xlink:label="loc_omcl_DeferredGrossProfit_3E5F135257484784831417264FC15F5A" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_7D9764994F1DD0AD221E17264FC1CE7A" xlink:to="loc_omcl_DeferredGrossProfit_3E5F135257484784831417264FC15F5A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_1388C62C79BE250F8AA917264FC116B3" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_7D9764994F1DD0AD221E17264FC1CE7A" xlink:to="loc_us-gaap_LiabilitiesCurrent_1388C62C79BE250F8AA917264FC116B3" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_LongTermDeferredServiceRevenue" xlink:label="loc_omcl_LongTermDeferredServiceRevenue_26654A53C507F9679E0D17264FC11935" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_176BD26DA98005DFD43617264FC1B032" xlink:to="loc_omcl_LongTermDeferredServiceRevenue_26654A53C507F9679E0D17264FC11935" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_9D7E920F38486E713C3E17264FC12591" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_176BD26DA98005DFD43617264FC1B032" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_9D7E920F38486E713C3E17264FC12591" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_1475F275F9A9D18E249117264FC187DA" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_176BD26DA98005DFD43617264FC1B032" xlink:to="loc_us-gaap_Liabilities_1475F275F9A9D18E249117264FC187DA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_59E1E575868D97D4706517264FC16FA4" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_176BD26DA98005DFD43617264FC1B032" xlink:to="loc_us-gaap_StockholdersEquityAbstract_59E1E575868D97D4706517264FC16FA4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_C0EFCC7680122445AFF317264FC16206" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_59E1E575868D97D4706517264FC16FA4" xlink:to="loc_us-gaap_StockholdersEquity_C0EFCC7680122445AFF317264FC16206" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_AB180654DD9109ECE6F017264FC13844" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_176BD26DA98005DFD43617264FC1B032" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_AB180654DD9109ECE6F017264FC13844" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_DCC2B949373383971BEA17264FC27368" xlink:type="locator" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_004A05AD2776F82D3E3917264FFD4B00" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_4470D6894D1E725EB00017264FFDF4A5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_004A05AD2776F82D3E3917264FFD4B00" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_4470D6894D1E725EB00017264FFDF4A5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_5E947055C2F037014D081A6D070B47FA" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_004A05AD2776F82D3E3917264FFD4B00" xlink:to="loc_us-gaap_StatementTable_5E947055C2F037014D081A6D070B47FA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_66138979C2AB9E52E2431A6D070CB8BE" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_5E947055C2F037014D081A6D070B47FA" xlink:to="loc_us-gaap_StatementScenarioAxis_66138979C2AB9E52E2431A6D070CB8BE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_A8BF10CFCC163D5286261A6D070C2E89" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_66138979C2AB9E52E2431A6D070CB8BE" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_A8BF10CFCC163D5286261A6D070C2E89" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_F8017BD900DCB6726AD01A6D070D1EBE" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_5E947055C2F037014D081A6D070B47FA" xlink:to="loc_us-gaap_StatementClassOfStockAxis_F8017BD900DCB6726AD01A6D070D1EBE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_993E877BDD2AC6FAE9BA1A6D070D9BBA" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_F8017BD900DCB6726AD01A6D070D1EBE" xlink:to="loc_us-gaap_ClassOfStockDomain_993E877BDD2AC6FAE9BA1A6D070D9BBA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_33020858DE58EB8CD51A1A6D070DA022" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_5E947055C2F037014D081A6D070B47FA" xlink:to="loc_us-gaap_StatementLineItems_33020858DE58EB8CD51A1A6D070DA022" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_3C8A337ED0FCA17B75291726507E3C07" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_C6FFAC7A293D90A228961726507E9B22" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_E8B5E124261FB845FC691726507E6F88" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_C6FFAC7A293D90A228961726507E9B22" xlink:to="loc_us-gaap_StatementTable_E8B5E124261FB845FC691726507E6F88" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_B06666814B35E5A8DB2C1726507ED117" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_E8B5E124261FB845FC691726507E6F88" xlink:to="loc_us-gaap_StatementScenarioAxis_B06666814B35E5A8DB2C1726507ED117" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_B06CC9ACE3CAFE1CED891726507EB5D5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_B06666814B35E5A8DB2C1726507ED117" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_B06CC9ACE3CAFE1CED891726507EB5D5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_E8B5E124261FB845FC691726507E6F88" xlink:to="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_215DDC4198D4216375E01726507F2988" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_215DDC4198D4216375E01726507F2988" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_86697B0C633D7A5F56EF1726507F9431" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_215DDC4198D4216375E01726507F2988" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_86697B0C633D7A5F56EF1726507F9431" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_215DDC4198D4216375E01726507F2988" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_A3CB5500761A9B32F22C1726507FD8B0" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_A3CB5500761A9B32F22C1726507FD8B0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:label="loc_us-gaap_GainLossOnDispositionOfAssets_D3F95C2BF3B1422B80951726507FAE54" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_GainLossOnDispositionOfAssets_D3F95C2BF3B1422B80951726507FAE54" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossRelatedToLitigationSettlement" xlink:label="loc_us-gaap_GainLossRelatedToLitigationSettlement_3D824A635283A3845CB51726507F8BEC" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_GainLossRelatedToLitigationSettlement_3D824A635283A3845CB51726507F8BEC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_9D4153DF28E73DB4FB6C1726507FBCEF" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_9D4153DF28E73DB4FB6C1726507FBCEF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GainLossOnSaleOfNotesReceivable" xlink:label="loc_us-gaap_GainLossOnSaleOfNotesReceivable_1275ED53856E6AA4342673B809DE48B6" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_GainLossOnSaleOfNotesReceivable_1275ED53856E6AA4342673B809DE48B6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_D80AE051BCB44149F96C1726507FF9D1" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_ShareBasedCompensation_D80AE051BCB44149F96C1726507FF9D1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TaxBenefitFromStockOptionsExercised" xlink:label="loc_us-gaap_TaxBenefitFromStockOptionsExercised_ABAA9BA5AE439AA342AA1726507F08CE" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_TaxBenefitFromStockOptionsExercised_ABAA9BA5AE439AA342AA1726507F08CE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_7829F2A4A2506B00CAEC1726507F7E37" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_7829F2A4A2506B00CAEC1726507F7E37" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryWriteDown" xlink:label="loc_us-gaap_InventoryWriteDown_E6FE09A74F72800E8C4D1726507F27B2" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_InventoryWriteDown_E6FE09A74F72800E8C4D1726507F27B2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_E9B0B1E60EC4A0054CCC1726507F4E1F" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_E9B0B1E60EC4A0054CCC1726507F4E1F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_525AEE035896EE0897E21726507F835B" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_525AEE035896EE0897E21726507F835B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:type="locator" />
    <presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_611B03B9723533ECDB711726507FA53E" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_BCF05B53A96514422F9F1726507FC72F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_BCF05B53A96514422F9F1726507FC72F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_FA1612E6C47E9743404F1726507FB309" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_FA1612E6C47E9743404F1726507FB309" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_2A8641F84D51700EA83D1726507FE41D" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidExpense_2A8641F84D51700EA83D1726507FE41D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_2878E23EC7EB0DE03E491726507FB1DC" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_2878E23EC7EB0DE03E491726507FB1DC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInLeasingReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInLeasingReceivables_17EA448B77796053F34F1726507F7EF2" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInLeasingReceivables_17EA448B77796053F34F1726507F7EF2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_FC5B79A18F2610770CFA1726507FCDA3" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_FC5B79A18F2610770CFA1726507FCDA3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_2D0D8155FCA9D36199DF1726507F8915" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_2D0D8155FCA9D36199DF1726507F8915" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_4A951205109F8EB64EAB73E15159B354" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_4A951205109F8EB64EAB73E15159B354" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_042CD56A99579AF332CF1726507F481D" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_042CD56A99579AF332CF1726507F481D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredRevenue_2C4CC9E1FC591C689A591726507F7532" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredRevenue_2C4CC9E1FC591C689A591726507F7532" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_IncreaseDecreaseInDeferredGrossProfit" xlink:label="loc_omcl_IncreaseDecreaseInDeferredGrossProfit_D46256F2289214277F391726507FCC1A" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_omcl_IncreaseDecreaseInDeferredGrossProfit_D46256F2289214277F391726507FCC1A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_18C160B883CD7F5EAB9B8007842F4D43" xlink:type="locator" />
    <presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_3994223E3601C83B8AEE1726507F3001" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_18C160B883CD7F5EAB9B8007842F4D43" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_54F9CFABA1788024A1201726507F5092" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_215DDC4198D4216375E01726507F2988" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_54F9CFABA1788024A1201726507F5092" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_2B0218BAE7B700911D2E1726507FE623" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_2B0218BAE7B700911D2E1726507FE623" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireShortTermInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireShortTermInvestments_7B78A35F4160D4CC03381726507F54C2" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_2B0218BAE7B700911D2E1726507FE623" xlink:to="loc_us-gaap_PaymentsToAcquireShortTermInvestments_7B78A35F4160D4CC03381726507F54C2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments_B5BA135D019CB96C18221726507F480A" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_2B0218BAE7B700911D2E1726507FE623" xlink:to="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfShorttermInvestments_B5BA135D019CB96C18221726507F480A" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_AcquisitionOfIntangibleAssetsAndIntellectualProperty" xlink:label="loc_omcl_AcquisitionOfIntangibleAssetsAndIntellectualProperty_CF6769E1C37B818C4F541726507F84A5" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_2B0218BAE7B700911D2E1726507FE623" xlink:to="loc_omcl_AcquisitionOfIntangibleAssetsAndIntellectualProperty_CF6769E1C37B818C4F541726507F84A5" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_PaymentsOfSoftwareDevelopmentForExternalUse" xlink:label="loc_omcl_PaymentsOfSoftwareDevelopmentForExternalUse_0D43482BF773C07B22871726507F7B23" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_2B0218BAE7B700911D2E1726507FE623" xlink:to="loc_omcl_PaymentsOfSoftwareDevelopmentForExternalUse_0D43482BF773C07B22871726507F7B23" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_F1CF71C69B9A103F5E471726507F1ED1" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_2B0218BAE7B700911D2E1726507FE623" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_F1CF71C69B9A103F5E471726507F1ED1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_71FD0B0ABF9E5C6F83D51726507F65F2" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_2B0218BAE7B700911D2E1726507FE623" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_71FD0B0ABF9E5C6F83D51726507F65F2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_200A3FBA04CF246EAFE31726507FB6BB" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_2B0218BAE7B700911D2E1726507FE623" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_200A3FBA04CF246EAFE31726507FB6BB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8BA476EF5885774760061726507FA171" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8BA476EF5885774760061726507FA171" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A8876016157DA12C70411726507FC46D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8BA476EF5885774760061726507FA171" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_A8876016157DA12C70411726507FC46D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_8802CB6CFE1AC4C1DBFC1726507FCD10" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8BA476EF5885774760061726507FA171" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_8802CB6CFE1AC4C1DBFC1726507FCD10" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_B92F75B708A15E21ED651726507F845A" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8BA476EF5885774760061726507FA171" xlink:to="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_B92F75B708A15E21ED651726507F845A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_8C352733CC56B5507CF91726507FBE56" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_8BA476EF5885774760061726507FA171" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_8C352733CC56B5507CF91726507FBE56" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations_7B27A99608656CBE0E691726507F69C0" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalentsContinuingOperations_7B27A99608656CBE0E691726507F69C0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInContinuingOperations_C7198F881452B95A58DF1726507F134E" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:to="loc_us-gaap_NetCashProvidedByUsedInContinuingOperations_C7198F881452B95A58DF1726507F134E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6A0EF87CE987520234471726507FE7EB" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6A0EF87CE987520234471726507FE7EB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_A56631C95B408D2D76FE1726507F9230" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_A56631C95B408D2D76FE1726507F9230" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_0795A74B3E9005549EA01726508024D9" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_0795A74B3E9005549EA01726508024D9" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_SatisfactionOfAcquiredLegalContingencyWithIndemnificationAsset" xlink:label="loc_omcl_SatisfactionOfAcquiredLegalContingencyWithIndemnificationAsset_0E055743296217E6FF8717265080F3E3" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_0795A74B3E9005549EA01726508024D9" xlink:to="loc_omcl_SatisfactionOfAcquiredLegalContingencyWithIndemnificationAsset_0E055743296217E6FF8717265080F3E3" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_CashFlowNoncashOperatingActivitiesDisclosureAbstract" xlink:label="loc_omcl_CashFlowNoncashOperatingActivitiesDisclosureAbstract_0496F047E97C2073C5FE17265080D61E" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_4CDB0AE08909595020701726507FD766" xlink:to="loc_omcl_CashFlowNoncashOperatingActivitiesDisclosureAbstract_0496F047E97C2073C5FE17265080D61E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_4B23300FA95C7A4C51971726507E544B" xlink:type="locator" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended">
    <loc xlink:href="omcl-20120331.xsd#omcl_UnauditedCondensedConsolidatedStatementsOfComprehensiveIncomeAbstract" xlink:label="loc_omcl_UnauditedCondensedConsolidatedStatementsOfComprehensiveIncomeAbstract_AF420B5C159A27118D1A741AB0AB9BD3" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_0B2635F4D24ACEB56E4C741AB8EED3F5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_omcl_UnauditedCondensedConsolidatedStatementsOfComprehensiveIncomeAbstract_AF420B5C159A27118D1A741AB0AB9BD3" xlink:to="loc_us-gaap_StatementTable_0B2635F4D24ACEB56E4C741AB8EED3F5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_3938098C586DA7276F60741AB8EE4D2C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_0B2635F4D24ACEB56E4C741AB8EED3F5" xlink:to="loc_us-gaap_StatementScenarioAxis_3938098C586DA7276F60741AB8EE4D2C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_F98A8C2C698A1B4FA1D4741AB8EE78E2" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_3938098C586DA7276F60741AB8EE4D2C" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_F98A8C2C698A1B4FA1D4741AB8EE78E2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_12C7CDB98478041AA8B7741AB8EE4FA9" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_0B2635F4D24ACEB56E4C741AB8EED3F5" xlink:to="loc_us-gaap_StatementLineItems_12C7CDB98478041AA8B7741AB8EE4FA9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_CEEAEA4E52B789C7060E830F7BF1CFE9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_12C7CDB98478041AA8B7741AB8EE4FA9" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_CEEAEA4E52B789C7060E830F7BF1CFE9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_EDEEA1CE82E8515ADB39741D485E39C3" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_12C7CDB98478041AA8B7741AB8EE4FA9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract_EDEEA1CE82E8515ADB39741D485E39C3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MarketableSecuritiesUnrealizedGainLossAbstract" xlink:label="loc_us-gaap_MarketableSecuritiesUnrealizedGainLossAbstract_F7698A13DB0FE8C2A5578318B0765A6D" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_12C7CDB98478041AA8B7741AB8EE4FA9" xlink:to="loc_us-gaap_MarketableSecuritiesUnrealizedGainLossAbstract_F7698A13DB0FE8C2A5578318B0765A6D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_28158C4F1AB12F8CAA09741E874155C6" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MarketableSecuritiesUnrealizedGainLossAbstract_F7698A13DB0FE8C2A5578318B0765A6D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_28158C4F1AB12F8CAA09741E874155C6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease_2FFD151D85CC29C89142741EBF5B1D4F" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MarketableSecuritiesUnrealizedGainLossAbstract_F7698A13DB0FE8C2A5578318B0765A6D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease_2FFD151D85CC29C89142741EBF5B1D4F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_C787D1E1929AAAD28DEF831098D21A93" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MarketableSecuritiesUnrealizedGainLossAbstract_F7698A13DB0FE8C2A5578318B0765A6D" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_C787D1E1929AAAD28DEF831098D21A93" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/CondensedConsolidatedStatementsOfOperations" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_52FBBC6F191C673EB9E81726502ADF09" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_67B746D9BA15EB5965EA1726502AD265" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_52FBBC6F191C673EB9E81726502ADF09" xlink:to="loc_us-gaap_StatementTable_67B746D9BA15EB5965EA1726502AD265" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_8C22C2278D129E6338821726502A57A0" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_67B746D9BA15EB5965EA1726502AD265" xlink:to="loc_us-gaap_StatementScenarioAxis_8C22C2278D129E6338821726502A57A0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_D93DC6059348DEA0B9F51726502A9C27" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_8C22C2278D129E6338821726502A57A0" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_D93DC6059348DEA0B9F51726502A9C27" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_67B746D9BA15EB5965EA1726502AD265" xlink:to="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_F14C3ADCFB638BA13B451726502AF27E" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_RevenuesAbstract_F14C3ADCFB638BA13B451726502AF27E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SalesRevenueGoodsNet" xlink:label="loc_us-gaap_SalesRevenueGoodsNet_089FFB16CC2F0FB7A4081726502A20F9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_F14C3ADCFB638BA13B451726502AF27E" xlink:to="loc_us-gaap_SalesRevenueGoodsNet_089FFB16CC2F0FB7A4081726502A20F9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:label="loc_us-gaap_SalesRevenueServicesNet_EED79A8025CA63DBFA831726502A3E91" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_F14C3ADCFB638BA13B451726502AF27E" xlink:to="loc_us-gaap_SalesRevenueServicesNet_EED79A8025CA63DBFA831726502A3E91" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_9AF47CF9EA3154B5ABE51726502AA087" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_F14C3ADCFB638BA13B451726502AF27E" xlink:to="loc_us-gaap_Revenues_9AF47CF9EA3154B5ABE51726502AA087" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CostOfRevenueAbstract" xlink:label="loc_us-gaap_CostOfRevenueAbstract_811954C67BDC32BA988F1726502AF800" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_CostOfRevenueAbstract_811954C67BDC32BA988F1726502AF800" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CostOfGoodsSold" xlink:label="loc_us-gaap_CostOfGoodsSold_D9CD0DE6DBB91C1F4D201726502A5465" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostOfRevenueAbstract_811954C67BDC32BA988F1726502AF800" xlink:to="loc_us-gaap_CostOfGoodsSold_D9CD0DE6DBB91C1F4D201726502A5465" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CostOfServices" xlink:label="loc_us-gaap_CostOfServices_4CD0D2E13B957B5DE5A01726502AB182" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostOfRevenueAbstract_811954C67BDC32BA988F1726502AF800" xlink:to="loc_us-gaap_CostOfServices_4CD0D2E13B957B5DE5A01726502AB182" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_CostOfRevenuesRestructuringCharges" xlink:label="loc_omcl_CostOfRevenuesRestructuringCharges_E49828101B30C48E856D1726502AB325" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostOfRevenueAbstract_811954C67BDC32BA988F1726502AF800" xlink:to="loc_omcl_CostOfRevenuesRestructuringCharges_E49828101B30C48E856D1726502AB325" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CostOfRevenue" xlink:label="loc_us-gaap_CostOfRevenue_678E4D72925A8B30688B1726502ADE93" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CostOfRevenueAbstract_811954C67BDC32BA988F1726502AF800" xlink:to="loc_us-gaap_CostOfRevenue_678E4D72925A8B30688B1726502ADE93" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_142EB6FA2E167E0FA7A01726502ADA37" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_GrossProfit_142EB6FA2E167E0FA7A01726502ADA37" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_C8B050F5C07DBD611E811726502A4CC1" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_OperatingExpensesAbstract_C8B050F5C07DBD611E811726502A4CC1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_68F904B394629425D05B1726502A4C5C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_C8B050F5C07DBD611E811726502A4CC1" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_68F904B394629425D05B1726502A4C5C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_4D2AF9615BAD324109EE1726502A5D41" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_C8B050F5C07DBD611E811726502A4CC1" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_4D2AF9615BAD324109EE1726502A5D41" xlink:type="arc" />
    <loc xlink:href="omcl-20120331.xsd#omcl_RestructuringAssetImpairmentCharges" xlink:label="loc_omcl_RestructuringAssetImpairmentCharges_C1FE4EED910FDA4605B01726502A3C25" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_C8B050F5C07DBD611E811726502A4CC1" xlink:to="loc_omcl_RestructuringAssetImpairmentCharges_C1FE4EED910FDA4605B01726502A3C25" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_F59500939A93FD4A56501726502A32A7" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_C8B050F5C07DBD611E811726502A4CC1" xlink:to="loc_us-gaap_OperatingExpenses_F59500939A93FD4A56501726502A32A7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_3C02815009B3B04BA9D31726502A65E6" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_OperatingIncomeLoss_3C02815009B3B04BA9D31726502A65E6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_F1F651D0127C441A32691726502AF01B" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_F1F651D0127C441A32691726502AF01B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_A27026EEC55F2168FDC21726502A78F3" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_A27026EEC55F2168FDC21726502A78F3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_29C299B09706CBF228A31726502A38C5" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_29C299B09706CBF228A31726502A38C5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_1B959D36C97FD394FAEC1726502AFE45" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_1B959D36C97FD394FAEC1726502AFE45" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_470309C6A61245AECCEC1726502B3F6E" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_EarningsPerShareAbstract_470309C6A61245AECCEC1726502B3F6E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_67141738A4CC66D80F411726502A8140" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_EarningsPerShareBasic_67141738A4CC66D80F411726502A8140" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_F4E12A5E6CE0D7FEE8DE1726502A841E" xlink:type="locator" />
    <presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_EarningsPerShareDiluted_F4E12A5E6CE0D7FEE8DE1726502A841E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_450559169151342170B71726502AE737" xlink:type="locator" />
    <presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_2BAB496DBFDB1DD23CC11726502AFFF3" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_450559169151342170B71726502AE737" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_607E04FB36B88FEA03A11726502B75A2" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_450559169151342170B71726502AE737" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_607E04FB36B88FEA03A11726502B75A2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_47CC0E1ACDC2FEE8DC961726502BF6FB" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_450559169151342170B71726502AE737" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_47CC0E1ACDC2FEE8DC961726502BF6FB" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/Contingencies" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_27BA1237C08BC48187821726546BC7AE" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LegalMattersAndContingenciesTextBlock" xlink:label="loc_us-gaap_LegalMattersAndContingenciesTextBlock_1A711C29C538F62B0EDC1726546B2ADD" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_27BA1237C08BC48187821726546BC7AE" xlink:to="loc_us-gaap_LegalMattersAndContingenciesTextBlock_1A711C29C538F62B0EDC1726546B2ADD" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/DeferredGrossProfit" xlink:type="extended">
    <loc xlink:href="omcl-20120331.xsd#omcl_DeferredGrossProfitabstract" xlink:label="loc_omcl_DeferredGrossProfitabstract_70C4FEC9E4BBB0E5EC60172653BEF348" xlink:type="locator" />
    <loc xlink:href="omcl-20120331.xsd#omcl_DeferredGrossProfitTextBlock" xlink:label="loc_omcl_DeferredGrossProfitTextBlock_C975245A1A02A52564EA7AA6AA189914" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_omcl_DeferredGrossProfitabstract_70C4FEC9E4BBB0E5EC60172653BEF348" xlink:to="loc_omcl_DeferredGrossProfitTextBlock_C975245A1A02A52564EA7AA6AA189914" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/DocumentAndEntityInformationDocumentAndEntityInformation" xlink:type="extended">
    <loc xlink:href="omcl-20120331.xsd#omcl_DocumentAndEntityInformation" xlink:label="loc_omcl_DocumentAndEntityInformation_9B0E7C7FF6CE5966A9731726562ED8AA" xlink:type="locator" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntitiesTable" xlink:label="loc_dei_EntitiesTable_629B786F7B0DCF96AB681A78273266E8" xlink:type="locator" />
    <presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_omcl_DocumentAndEntityInformation_9B0E7C7FF6CE5966A9731726562ED8AA" xlink:to="loc_dei_EntitiesTable_629B786F7B0DCF96AB681A78273266E8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_C5B2D86275F366FB6A67248D77E253F1" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntitiesTable_629B786F7B0DCF96AB681A78273266E8" xlink:to="loc_dei_LegalEntityAxis_C5B2D86275F366FB6A67248D77E253F1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_7D79DC42B0D49F50C8BE248DE9B6818F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_LegalEntityAxis_C5B2D86275F366FB6A67248D77E253F1" xlink:to="loc_dei_EntityDomain_7D79DC42B0D49F50C8BE248DE9B6818F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityInformationLineItems" xlink:label="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntitiesTable_629B786F7B0DCF96AB681A78273266E8" xlink:to="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_7EEE0661DF6306482D2F1726562EA34C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_EntityRegistrantName_7EEE0661DF6306482D2F1726562EA34C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_22A7489BB6A4589A8C911726562ED898" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_EntityCentralIndexKey_22A7489BB6A4589A8C911726562ED898" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_53B61228F167E0A8A98B1726562E81D6" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_DocumentType_53B61228F167E0A8A98B1726562E81D6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_9A69A9A6CF39408090A91726562E8E2F" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_DocumentPeriodEndDate_9A69A9A6CF39408090A91726562E8E2F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_30B8C80E3707F2D410041726562EF9A7" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_AmendmentFlag_30B8C80E3707F2D410041726562EF9A7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_AmendmentDescription" xlink:label="loc_dei_AmendmentDescription_666BDEB25F5438BC5E391726562EB0B7" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_AmendmentDescription_666BDEB25F5438BC5E391726562EB0B7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_EB6FAE540EDBDB0FC96C1726562F181B" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_CurrentFiscalYearEndDate_EB6FAE540EDBDB0FC96C1726562F181B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_E40385499AD33F6BEAFC1726562F5E4F" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_E40385499AD33F6BEAFC1726562F5E4F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_dei_EntityVoluntaryFilers_F39348DFD0FD38F1BD841726562F42AA" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_EntityVoluntaryFilers_F39348DFD0FD38F1BD841726562F42AA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_CD847B34303D6593B28F1726562F91F9" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_EntityCurrentReportingStatus_CD847B34303D6593B28F1726562F91F9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_D22FC36924685D42BE7D1726562F71A6" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_EntityFilerCategory_D22FC36924685D42BE7D1726562F71A6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityPublicFloat" xlink:label="loc_dei_EntityPublicFloat_39891D727D1A5B7EEC3D1726562FA3F7" xlink:type="locator" />
    <presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_EntityPublicFloat_39891D727D1A5B7EEC3D1726562FA3F7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_850577A9FE43BE3A038B1726562F9037" xlink:type="locator" />
    <presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_850577A9FE43BE3A038B1726562F9037" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_252BB0DA697D105E35BC1726562FB112" xlink:type="locator" />
    <presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_DocumentFiscalYearFocus_252BB0DA697D105E35BC1726562FB112" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_446E766BF95091F8277F1726562FAECC" xlink:type="locator" />
    <presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_EntityInformationLineItems_C7360E8E42D5304E87581A7827327CD6" xlink:to="loc_dei_DocumentFiscalPeriodFocus_446E766BF95091F8277F1726562FAECC" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/GoodwillAndOtherIntangibleAssets" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_FEFFEE05E61C87310C77172653190470" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_4DE1B03AE441CDE5863817265319BA9F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_FEFFEE05E61C87310C77172653190470" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_4DE1B03AE441CDE5863817265319BA9F" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/Inventories" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryDisclosureAbstract" xlink:label="loc_us-gaap_InventoryDisclosureAbstract_C70E4C73D4A9B1C006B7172652226BB1" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryDisclosureTextBlock" xlink:label="loc_us-gaap_InventoryDisclosureTextBlock_230B9B6641A49E9C82D3172652222978" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_C70E4C73D4A9B1C006B7172652226BB1" xlink:to="loc_us-gaap_InventoryDisclosureTextBlock_230B9B6641A49E9C82D3172652222978" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/NetIncomePerShare" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_84744B8CC73634C2C7241726518E0B25" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_65EAB4C10364F00B03941726518F8841" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_84744B8CC73634C2C7241726518E0B25" xlink:to="loc_us-gaap_EarningsPerShareTextBlock_65EAB4C10364F00B03941726518F8841" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/NetInvestmentInSalesTypeLeases" xlink:type="extended">
    <loc xlink:href="omcl-20120331.xsd#omcl_NetInvestmentInSalesTypeLeasesDisclosure" xlink:label="loc_omcl_NetInvestmentInSalesTypeLeasesDisclosure_6F021223EBD3E44B4410172652C9B308" xlink:type="locator" />
    <loc xlink:href="omcl-20120331.xsd#omcl_NetInvestmentsInSalesTypeLeasesTextBlock" xlink:label="loc_omcl_NetInvestmentsInSalesTypeLeasesTextBlock_98EF235AB068E33AD2DD7AA805AA2B76" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_omcl_NetInvestmentInSalesTypeLeasesDisclosure_6F021223EBD3E44B4410172652C9B308" xlink:to="loc_omcl_NetInvestmentsInSalesTypeLeasesTextBlock_98EF235AB068E33AD2DD7AA805AA2B76" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/OrganizationAndSummaryOfSignificantAccountingPolicies" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_58567CF68C11CE7D9960172650EF8C34" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_610D4BAC2809E6757874172650EF81B1" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_58567CF68C11CE7D9960172650EF8C34" xlink:to="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock_610D4BAC2809E6757874172650EF81B1" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/PropertyAndEquipment" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_A535EEE5C753B9954200172652797B3D" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_B2F2266D6E23F37F670917265279037C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_A535EEE5C753B9954200172652797B3D" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_B2F2266D6E23F37F670917265279037C" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/StockOptionPlansAndShareBasedCompensation" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_F143BA2935300FC647531726550F46FC" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_2BD3200EF5076DFF1BC21726550F40A9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_F143BA2935300FC647531726550F46FC" xlink:to="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_2BD3200EF5076DFF1BC21726550F40A9" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/StockholdersEquity" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="loc_us-gaap_StockholdersEquityNoteAbstract_3936A7BD557B49152B0B172654BD0C4F" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_BD43204DA206B2E302C1172654BDD071" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_3936A7BD557B49152B0B172654BD0C4F" xlink:to="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_BD43204DA206B2E302C1172654BDD071" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.omnicell.com/role/SubsequentEvent" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="loc_us-gaap_SubsequentEventsAbstract_619A6E34E790DE459AE5172655C4BCD7" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="loc_us-gaap_SubsequentEventsTextBlock_E2840FC07785F595E2DF172655C4D57D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventsAbstract_619A6E34E790DE459AE5172655C4BCD7" xlink:to="loc_us-gaap_SubsequentEventsTextBlock_E2840FC07785F595E2DF172655C4D57D" xlink:type="arc" />
  </presentationLink>
</linkbase>
