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  <xs:element id="well_WelltowerOPIncMember" abstract="true" name="WelltowerOPIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="well_BusinessAcquisitionPurchasePriceAllocationCashDisbursed" abstract="false" name="BusinessAcquisitionPurchasePriceAllocationCashDisbursed" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_BusinessAcquisitionPurchasePriceAllocationNetCashInvested" abstract="false" name="BusinessAcquisitionPurchasePriceAllocationNetCashInvested" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityMarketToMarketAdjustment" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityMarketToMarketAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityForeignCurrencyGainLoss" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityForeignCurrencyGainLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_RentalIncomeRelatedToAboveBelowMarketTenantLeases" abstract="false" name="RentalIncomeRelatedToAboveBelowMarketTenantLeases" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_Loansandleasesreceivableimpairedendofperiodnotinallowanceforloanloss1" abstract="false" name="Loansandleasesreceivableimpairedendofperiodnotinallowanceforloanloss1" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="well_LongTermDebtWeightedAverageInterestRateRollForward" abstract="true" name="LongTermDebtWeightedAverageInterestRateRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="well_SaleOfStockAuthorizedAmount" abstract="false" name="SaleOfStockAuthorizedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_GainLossOnSaleOfOtherAssetsAndLiabilities" abstract="false" name="GainLossOnSaleOfOtherAssetsAndLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="well_PercentageInvestmentsWithTopFiveCustomers" abstract="false" name="PercentageInvestmentsWithTopFiveCustomers" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
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  <xs:element id="well_NumberOfFinanceLeasesClassifiedAsHeldForSale" abstract="false" name="NumberOfFinanceLeasesClassifiedAsHeldForSale" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
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  <xs:element id="well_A295SeniorUnsecuredNotesDue2023Member" abstract="true" name="A295SeniorUnsecuredNotesDue2023Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="well_GrossProceedsFromIssuanceOfCommonStock" abstract="false" name="GrossProceedsFromIssuanceOfCommonStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_AdditionalFinancingToCompleteConstruction" abstract="false" name="AdditionalFinancingToCompleteConstruction" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRealEstateAssets" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRealEstateAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_DepreciationAmortizationRelatedToInPlaceLeaseIntangiblesAndLeaseCommissions" abstract="false" name="DepreciationAmortizationRelatedToInPlaceLeaseIntangiblesAndLeaseCommissions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="well_LesseeLeaseRenewalTerm" abstract="false" name="LesseeLeaseRenewalTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="well_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" abstract="false" name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="well_ProMedicaMember" abstract="true" name="ProMedicaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="well_SunriseMember" abstract="true" name="SunriseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
