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      <TotalLiabNetAssetsFundBalances>
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      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
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      <FSAudited>true</FSAudited>
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      <Form990ScheduleJPartII>
        <NamePerson>DENNIS CHARNEY 12</NamePerson>
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      <Form990ScheduleJPartII>
        <NamePerson>MARK KOSTEGAN FAHP 1</NamePerson>
        <Title>VP DEVELOPMENT</Title>
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        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
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      <Form990ScheduleJPartII>
        <NamePerson>VALENTIN FUSTER MD 1</NamePerson>
        <Title>DIRECTOR (RESIGNED JULY 2012)</Title>
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        <NamePerson>STEPHEN HARVEY 1</NamePerson>
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      <Form990ScheduleJPartIII>
        <Identifier>Part VII, Section A &amp; Schedule J</Identifier>
        <ReturnReference>Compensation Footnotes</ReturnReference>
        <Explanation>(1)Compensation and benefits are funded from The Mount Sinai Hospital and/or Icahn School of Medicine at Mount Sinai. (2)Employee has an outstanding loan reflected in Schedule L, Part II of Icahn School of Medicine at Mount Sinai's Form 990.</Explanation>
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    </IRS990ScheduleJ>
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      <GeneralExplanation>
        <Identifier>Part I, Line 5</Identifier>
        <ReturnReference>Number of Employees</ReturnReference>
        <Explanation>MOUNT SINAI HOSPITAL OPERATES ALL PAYROLLS FOR RELATED ENTITIES AND ALL SALARIES ARE ALLOCATED BACK TO THE SEPARATE ENTITIES AND REPORTED AS IF PAID DIRECTLY BY THEM. THE MOUNT SINAI HOSPITAL, ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI, ELMHURST HOSPITAL CENTER AND QUEENS HOSPITAL CENTER UTILIZE A COMMON PAYMASTER UNDER THE HOSPITAL'S TAX IDENTIFICATION NUMBER, WHICH ON A COMBINED BASIS COVERS 21,829 INDIVIDUALS. MITRAL FOUNDATION DOES NOT HAVE ANY EMPLOYEES AND RECEIVES SERVICES FROM EMPLOYEES OF ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI AND THE MOUNT SINAI HOSPITAL. PART VI, SECTION B, LINE 11B FORM 990 PROVIDED TO GOVERNING BODY THE FINANCE DEPARTMENT GATHERED THE RELEVANT INFORMATION AND PREPARED THE TAX RETURNS *OUR OUTSIDE AUDITORS, ERNST &amp; YOUNG, PARTICIPATED IN THE PREPARATION OF, AND REVIEWED, ALL TAX RETURNS. *A QUESTIONNAIRE WAS CIRCULATED TO ALL TRUSTEES (I.E., DIRECTORS), OFFICERS AND KEY EMPLOYEES IN ORDER TO ELICIT THE INFORMATION REQUIRED TO BE REPORTED ON THE TAX RETURNS. *THE TRUSTEE CONFLICTS OF INTEREST REVIEW COMMITTEE REVIEWED THE RESPONSES PROVIDED BY TRUSTEES AND CERTAIN OFFICERS IN THE QUESTIONNAIRES AND ASSESSED ADDITIONAL PERTINENT FACTS GATHERED BY THE INSTITUTION IN ORDER TO EVALUATE THE APPLICABILITY OF IRS REPORTING REQUIREMENTS. THE REVIEW COMMITTEE THEN DETERMINED THE APPROPRIATE TRUSTEE (AND CERTAIN OFFICER) DISCLOSURES THAT SHOULD BE MADE ON FORM 990 BASED ON THE RECOMMENDATIONS OF THE FINANCE DEPARTMENT, THE GENERAL COUNSEL'S OFFICE AND THE AUDIT AND COMPLIANCE DEPARTMENT. THESE RECOMMENDATIONS WERE REVIEWED AND APPROVED BY E&amp;Y. THE SAME PROCESS WAS CONDUCTED BY THE FINANCE DEPARTMENT, THE GENERAL COUNSEL'S OFFICE, THE AUDIT AND COMPLIANCE DEPARTMENT AND E&amp;Y WITH RESPECT TO THE QUESTIONNAIRES SUBMITTED BY OTHER OFFICERS AND KEY EMPLOYEES. *THE AUDIT AND COMPLIANCE COMMITTEE OF THE BOARD OF TRUSTEES CONDUCTED A REVIEW OF THE ENTIRE TAX RETURN, WITH THE PARTICIPATION OF E&amp;Y, THE FINANCE DEPARTMENT, THE GENERAL COUNSEL'S OFFICE, AND THE AUDIT AND COMPLIANCE DEPARTMENT. THE AUDIT COMMITTEE APPROVED THE TAX RETURNS AS PRESENTED. *THE AUDIT COMMITTEE'S REPORT OF ITS REVIEW OF THE TAX RETURNS AND ITS RECOMMENDATION TO FILE THE RETURNS WERE PRESENTED TO, AND ACCEPTED BY, THE EXECUTIVE COMMITTEE OF THE BOARD OF TRUSTEES (THE "EXECUTIVE COMMITTEE"). *IN ADDITION TO AUTHORIZING THE FILING OF THE TAX RETURNS, THE EXECUTIVE COMMITTEE DIRECTED THAT THE RETURNS, WHICH WILL BE FILED ON OR BEFORE NOVEMBER 15, 2013, BE PROVIDED TO ALL TRUSTEES VIA THE TRUSTEES' CONFIDENTIAL WEBSITE, AND THOSE RETURNS WERE SO PROVIDED BEFORE BEING FILED. PART VI, SECTION B, LINE 12C MONITORING &amp; ENFORCING COMPLIANCE WITH THE POLICY COMPLIANCE WITH THE ORGANIZATION'S BUSINESS CONFLICTS OF INTEREST POLICY (THE "POLICY") IS REQUIRED OF TRUSTEES, EMPLOYEES, MEDICAL STAFF AND NON-EMPLOYEE MEMBERS OF INSTITUTIONAL COMMITTEES AND INCLUDES AN ONGOING DUTY TO DISCLOSE POTENTIAL CONFLICTS. COMPLIANCE WITH THE POLICY IS MONITORED AND ENFORCED REGULARLY AND CONSISTENTLY. ALL DISCLOSURES WITH THE POTENTIAL FOR CONFLICT ARE REVIEWED BY AN APPROPRIATE COMMITTEE WHERE THEY ARE CAREFULLY EVALUATED. WHEN APPROPRIATE, A PLAN, WHICH MAY INVOLVE MEASURES INCLUDING, BUT NOT LIMITED TO, RECUSAL FROM PARTICIPATING IN AFFECTED TRANSACTIONS, IS DEVELOPED TO MANAGE THE POTENTIAL CONFLICT. Form 990 Part VI Line 12-14 The boards of Mount Sinai Medical Center, Icahn School of Medicine at Mount Sinai, and The Mount Sinai Hospital have adopted all policies referred to in Form 990, Part VI, Section B Questions 12-14, which cover all owned/controlled entities, including The Mitral Foundation. Form 990 Part VI Line 19 Mount Sinai Diagnostic &amp; Treatment Center Conflict of interest policy is available to the public on its website (www.mountsinai.org). Financial Statements are also available upon request, and are filtered through the organization to the finance department. Mount Sinai Diagnostic &amp; Treatment Center organizational documents are available upon request.</Explanation>
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        <PublicCharityStatus>3</PublicCharityStatus>
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        <ControlledOrg>true</ControlledOrg>
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      <LoansOrGuaranteesToOtherOrg>false</LoansOrGuaranteesToOtherOrg>
      <LoansOrGuaranteesFromOtherOrg>false</LoansOrGuaranteesFromOtherOrg>
      <SaleOfAssetsToOtherOrg>false</SaleOfAssetsToOtherOrg>
      <PurchaseOfAssetsFromOtherOrg>false</PurchaseOfAssetsFromOtherOrg>
      <ExchangeOfAssets>false</ExchangeOfAssets>
      <RentalOfFacilitiesToOtherOrgs>false</RentalOfFacilitiesToOtherOrgs>
      <RentalOfFacilitiesFrOtherOrgs>false</RentalOfFacilitiesFrOtherOrgs>
      <PerformOfServicesForOtherOrgs>false</PerformOfServicesForOtherOrgs>
      <PerformOfServicesByOtherOrgs>true</PerformOfServicesByOtherOrgs>
      <SharingOfFacilities>false</SharingOfFacilities>
      <SharingOfPaidEmployees>false</SharingOfPaidEmployees>
      <ReimbursementPaidToOtherOrg>false</ReimbursementPaidToOtherOrg>
      <ReimbursementPaidByOtherOrg>false</ReimbursementPaidByOtherOrg>
      <OtherTransferToOtherOrg>false</OtherTransferToOtherOrg>
      <OtherTransferFromOtherOrg>false</OtherTransferFromOtherOrg>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>b</TransactionType>
        <AmountInvolved>245530</AmountInvolved>
        <MethodOfAmtDetermination>COST</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <Form990ScheduleRPartVII>
        <Identifier>PART II, LINE 5, COLUMN F</Identifier>
        <ReturnReference>DIRECT CONTROLLING ENTITY</ReturnReference>
        <Explanation>ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI, THE MOUNT SINAI HOSPITAL, AND THE MOUNT SINAI MEDICAL CENTER ARE MEMBERS OF THIS ENTITY. PART II, LINE 6, COLUMN F DIRECT CONTROLLING ENTITY ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI, THE MOUNT SINAI HOSPITAL, THE MSMC REALTY CORPORATION, AND THE MSMC RESIDENTIAL REALTY MANAGER LLC ARE ALL MEMBERS OF THIS ENTITY. PART II, LINE 8, COLUMN F DIRECT CONTROLLING ENTITY ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI, THE MOUNT SINAI HOSPITAL, AND THE MSMC REALTY CORPORATION ARE ALL MEMBERS OF THIS ENTITY.</Explanation>
      </Form990ScheduleRPartVII>
    </IRS990ScheduleR>
  </ReturnData>
</Return>