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  <xsd:element id="dh_InitialEffectOfTheReorganizationTransactions" name="InitialEffectOfTheReorganizationTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_InitialEffectOfTheReorganizationTransactionsShare" name="InitialEffectOfTheReorganizationTransactionsShare" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_IntangibleAssetsIncludingGoodwillAccumulatedAmortization" name="IntangibleAssetsIncludingGoodwillAccumulatedAmortization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_IntangibleAssetsIncludingGoodwillGross" name="IntangibleAssetsIncludingGoodwillGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_IssuanceOfCommonStockNetOfCost" name="IssuanceOfCommonStockNetOfCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_LongTermDeferredContractCosts" name="LongTermDeferredContractCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_NetLossAttributableToParentPriorToTheReorganizationTransactions" name="NetLossAttributableToParentPriorToTheReorganizationTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_NonCashPortionOfGainsLossesOnExtinguishmentOfDebt" name="NonCashPortionOfGainsLossesOnExtinguishmentOfDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_OriginalIssueDiscount" name="OriginalIssueDiscount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_PaymentForDistributionsToMembers" name="PaymentForDistributionsToMembers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_PercentageOfAmountPaidToBank" name="PercentageOfAmountPaidToBank" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_PercentageOfAnnualBonus" name="PercentageOfAnnualBonus" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_PercentageOfInstallmentAmount" name="PercentageOfInstallmentAmount" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_PotentialEarnOutPayments" name="PotentialEarnOutPayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_PreIpoOwnersAmountCashSavings" name="PreIpoOwnersAmountCashSavings" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_ProceedsFromMemberContributions" name="ProceedsFromMemberContributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_PurchaseOfLimitedLiabilityCompanyLlcUnit" name="PurchaseOfLimitedLiabilityCompanyLlcUnit" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_RecoveryOfProvisionForDoubtfulAccountsReceivable" name="RecoveryOfProvisionForDoubtfulAccountsReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_RevenueRemainingPerformanceObligationCurrent" name="RevenueRemainingPerformanceObligationCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_RevenueRemainingPerformanceObligationNonCurrent" name="RevenueRemainingPerformanceObligationNonCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsEffectOfReorganizationTransactionsAndIpo" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsEffectOfReorganizationTransactionsAndIpo" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageEffectOfReorganizationTransactionsAndIpo" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageEffectOfReorganizationTransactionsAndIpo" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAveragePerformanceBasedUnitsExchangedForTimeBasedUnitsDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAveragePerformanceBasedUnitsExchangedForTimeBasedUnitsDateFairValue" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceBasedUnitsExchangedForTimeBasedUnits" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceBasedUnitsExchangedForTimeBasedUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_ShareBasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesParticipationThresholdAfterModification" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesParticipationThresholdAfterModification" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_ShareBasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfSharesParticipationThresholdAfterModification" name="ShareBasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfSharesParticipationThresholdAfterModification" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_ShareBasedPaymentAwardAwardQuarterlyVestingRightsPercentage" name="ShareBasedPaymentAwardAwardQuarterlyVestingRightsPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_StockIssuanceCostNet" name="StockIssuanceCostNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_TaxReceivableAgreementBenefitPercentage" name="TaxReceivableAgreementBenefitPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_TaxReceivableAgreementLiability" name="TaxReceivableAgreementLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_TaxReceivableAgreementRealizedTaxBenefitsPayableToRelatedParties" name="TaxReceivableAgreementRealizedTaxBenefitsPayableToRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_TaxReceivableAgreementRealizedTaxBenefitsPayableToRelatedPartiesPercent" name="TaxReceivableAgreementRealizedTaxBenefitsPayableToRelatedPartiesPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_TaxReceivableAgreementsLiabilityNetOfCurrentPortion" name="TaxReceivableAgreementsLiabilityNetOfCurrentPortion" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_TransactionExpenses" name="TransactionExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_UnamortizedFinancingCosts" name="UnamortizedFinancingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="dh_VestedIncentiveUnits" name="VestedIncentiveUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_VestedIncentiveUnitsValue" name="VestedIncentiveUnitsValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="dh_ClassBProfitInterestUnitsMember" name="ClassBProfitInterestUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_ComputersAndSoftwareMember" name="ComputersAndSoftwareMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_ConstructionAndSoftwareDevelopmentInProcessMember" name="ConstructionAndSoftwareDevelopmentInProcessMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_DataMember" name="DataMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_DeferredContractCostsMember" name="DeferredContractCostsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_DefinitiveHealthcareCorpMember" name="DefinitiveHealthcareCorpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_DefinitiveHoldcoAcquisitionMember" name="DefinitiveHoldcoAcquisitionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_DefinitiveOpcoMember" name="DefinitiveOpcoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_DirectedShareProgramMember" name="DirectedShareProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_EarnOutLiabilitiesMember" name="EarnOutLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_GoodwillAndIntangibleAssetsMember" name="GoodwillAndIntangibleAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_MonoclHoldingCompanyMember" name="MonoclHoldingCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_PaidInKindInterestOnTwoThousandNineteenTermLoanMember" name="PaidInKindInterestOnTwoThousandNineteenTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_PerformanceBasedMember" name="PerformanceBasedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_PerformanceBasedRsusMember" name="PerformanceBasedRsusMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_PlatformSubscriptionsMember" name="PlatformSubscriptionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_ProfessionalServicesMember" name="ProfessionalServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_ReorganizationTransactionsMember" name="ReorganizationTransactionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_RichardBoothMember" name="RichardBoothMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_SamuelAHamoodMember" name="SamuelAHamoodMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TechnologyMember" name="TechnologyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TimeBasedMember" name="TimeBasedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TimeBasedRsusMember" name="TimeBasedRsusMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TwoThousandNineteenDelayedDrawTermLoanMember" name="TwoThousandNineteenDelayedDrawTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TwoThousandNineteenEquityIncentivePlanMember" name="TwoThousandNineteenEquityIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TwoThousandNineteenRevolvingLineOfCreditMember" name="TwoThousandNineteenRevolvingLineOfCreditMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TwoThousandNineteenTermLoanMember" name="TwoThousandNineteenTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TwoThousandTwentyOneEquityIncentivePlanMember" name="TwoThousandTwentyOneEquityIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TwoThousandTwentyOneRevolvingLineOfCreditMember" name="TwoThousandTwentyOneRevolvingLineOfCreditMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_TwoThousandTwentyOneTermLoanMember" name="TwoThousandTwentyOneTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="dh_SummaryOfAllocationOfPurchasePriceToTheFairValueOfAssetsAcquiredTableTextBlock" name="SummaryOfAllocationOfPurchasePriceToTheFairValueOfAssetsAcquiredTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="dh_SummaryOfTransactionTransferredTableTextBlock" name="SummaryOfTransactionTransferredTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
