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        <PersonNm>Benjamin Raby MD</PersonNm>
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        <PersonNm>Scott Snapper MD</PersonNm>
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        <PersonNm>Amy Divasta MD</PersonNm>
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        <PersonNm>Wendy Chung MD</PersonNm>
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      <Form990PartVIISectionAGrp>
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        <PersonNm>Gregory Beaumier</PersonNm>
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        <PersonNm>William Tarvainen</PersonNm>
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        <PersonNm>Patricia Ellen Grant MD</PersonNm>
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        <ContractorName>
          <BusinessName>
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          <USAddress>
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        <ContractorName>
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          <USAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
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        <TitleTxt>Chief Financial Officer (10/22 to 7/</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>189621</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>11019</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>24450</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>20500</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>26874</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>272464</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>The Foundation provides gross-up payments for mortgage forgiveness, long-term disability insurance, and life insurance. These payments are included as taxable wages during the year. All permanent full-time employees of the Foundation are eligible for the gross-up payments.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 4b</FormAndLineReferenceDesc>
        <ExplanationTxt>The Children's Hospital Pediatric Associates, Inc. (the Foundation) established the Ineligible Deferred Compensation Plan. This plan is intended to qualify under Section 457(f) of the Code, and is intended to constitute a "top-hat plan" described in Section 201(2) of ERISA. The payment of benefits under the plan is at the sole discretion of the Foundation. In meeting its funding obligation, the employer will hold employee contributions in a Rabbi Trust. Each employee who is: a) an officer or highly compensated employee of the Foundation; b) a professor at Harvard University, or its professional equivalent; and c) determined by the Foundation's President to be eligible, may participate in the plan. Additionally, each Trustee of the Foundation who is determined by the Foundation's President to be eligible may participate in the plan. Participants may elect to defer compensation by a specific amount which, for any taxable year, shall not exceed an amount established by the Plan Administrator. The Foundation may, but is not required to, contribute an amount determined at the sole discretion of the Foundation on behalf of one or more eligible participants for a plan year. Participants are fully vested in the funds credited to their accounts after seven consecutive years of service. The Foundation made the following contributions to the 457(f) plan for the employees listed on Part VII, Page 7: Michael Agus, MD, $22,950; Richard Bachur, MD, $27,000; William Barbaresi, MD, $18,000; Gary Fleisher, MD, $32,000; Friedhelm Hildebrandt, MD, $20,500; Joel Hirschhorn, MD, $18,000; Stella Kourembanas, MD, $32,000; Benjamin Raby, MD, $15,300; William Tarvainen, $32,000; Christopher Walsh, MD, $31,000; Christopher Landrigan, MD, $18,000; Dennis Kim, MD, $18,000; Scott Snapper, MD, $17,000; Peter Nigrovic, MD, $16,000; and Joanne Cox, MD, $12,000.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 7</FormAndLineReferenceDesc>
        <ExplanationTxt>Bonus compensation methodology is reviewed and approved by Children's Hospital Pediatric Associates, Inc.'s (the Foundation's) finance committee. The bonuses are based on clinical and academic performance, along with individual citizenship. All final bonus amounts are approved by the applicable division chief and president of the Foundation.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <LoansBtwnOrgInterestedPrsnGrp>
        <PersonNm>Dennis Kim MD</PersonNm>
        <RelationshipWithOrgTxt>Trustee</RelationshipWithOrgTxt>
        <LoanPurposeTxt>Physician recruitment</LoanPurposeTxt>
        <LoanFromOrganizationInd>X</LoanFromOrganizationInd>
        <OriginalPrincipalAmt>669902</OriginalPrincipalAmt>
        <BalanceDueAmt>401896</BalanceDueAmt>
        <DefaultInd>0</DefaultInd>
        <BoardOrCommitteeApprovalInd>1</BoardOrCommitteeApprovalInd>
        <WrittenAgreementInd>1</WrittenAgreementInd>
      </LoansBtwnOrgInterestedPrsnGrp>
      <LoansBtwnOrgInterestedPrsnGrp>
        <PersonNm>Benjamin Raby MD</PersonNm>
        <RelationshipWithOrgTxt>Trustee</RelationshipWithOrgTxt>
        <LoanPurposeTxt>Physician recruitment</LoanPurposeTxt>
        <LoanFromOrganizationInd>X</LoanFromOrganizationInd>
        <OriginalPrincipalAmt>200000</OriginalPrincipalAmt>
        <BalanceDueAmt>120000</BalanceDueAmt>
        <DefaultInd>0</DefaultInd>
        <BoardOrCommitteeApprovalInd>1</BoardOrCommitteeApprovalInd>
        <WrittenAgreementInd>1</WrittenAgreementInd>
      </LoansBtwnOrgInterestedPrsnGrp>
      <LoansBtwnOrgInterestedPrsnGrp>
        <PersonNm>Peter Nigrovic MD</PersonNm>
        <RelationshipWithOrgTxt>Trustee</RelationshipWithOrgTxt>
        <LoanPurposeTxt>Physician recruitment</LoanPurposeTxt>
        <LoanFromOrganizationInd>X</LoanFromOrganizationInd>
        <OriginalPrincipalAmt>100000</OriginalPrincipalAmt>
        <BalanceDueAmt>80000</BalanceDueAmt>
        <DefaultInd>0</DefaultInd>
        <BoardOrCommitteeApprovalInd>1</BoardOrCommitteeApprovalInd>
        <WrittenAgreementInd>1</WrittenAgreementInd>
      </LoansBtwnOrgInterestedPrsnGrp>
      <TotalBalanceDueAmt>601896</TotalBalanceDueAmt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule L, Part II:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Children's Hospital Pediatric Associates, Inc. (the Foundation) has developed a recruitment loan program for eligible employees as incentive for qualified employees to relocate to certain facilities as demands of the Foundation's practice arise. The loan proceeds are to be used for the purchase of a principal personal residence. The loans are secured by a promissory note and a second mortgage on the residence. The Foundation has provided three loans to three members of the board. However, the Foundation has provided loans to other employees. The amounts for the recruitment loans were originally funded by restricted donations provided by Boston Children's Hospital for use in recruitment. The loans will be forgiven over the terms of the notes if the recipients remain employed at the Foundation or its affiliates. If any borrower terminates his/her employment, the remaining balance becomes immediately due. The amount of the loan forgiveness will be included with accrued interest, if applicable, as compensation in the year forgiven. At September 30, 2023, the balance of the loans outstanding is $6,889,516. Future principal balances due are $2,029,046 in 2024; $1,697,704 in 2025; $1,208,624 in 2026; $577,411 in 2027; and $1,376,731 thereafter. Loan amounts to individuals reported in Part VII have been disclosed in Schedule L, Part II, the balance of the notes receivable are with individuals who are not required to be disclosed in Schedule L per the Internal Revenue Service instructions.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>The majority of the Children's Hospital Pediatric Associates, Inc. (the Foundation) board members are physicians who are not independent from the Foundation. However, the Foundation is part of an integrated delivery system with Boston Children's Hospital (the Hospital) which does have a community board. The Foundation was organized in 2002. At the time, the board was composed entirely of physicians, a board structure that was approved by the Internal Revenue Service. The Foundation has since adjusted the board structure by adding the Physicians Organization at Children's Hospital, Inc. (the PO) as a member. See Schedule O, Part VI, Questions 3, 6, 7b, and 12 for more on the PO's rights.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>The Physicians Organization at Children's Hospital, Inc. (the PO) is a Class "C" member of Children's Hospital Pediatric Associates, Inc. (the Foundation). The PO provides management services for the Foundation. The PO has the power to approve the independent auditor and legal counsel of the Foundation from a list of firms mutually agreed to by the PO and the Foundation. The PO also has the right to review, but not to approve, the annual budgets and by-law changes of the Foundation. Lastly, Boston Children's Hospital has the right to review for compliance with applicable law, the general terms of and any modification to physician compensation and benefit plans for all physician employees of the Foundation.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>The Children's Hospital Pediatric Associates, Inc. (the Foundation) has four classes of members. The Pediatrician-in-Chief or any Acting Pediatrician-in-Chief, as Chief of the Department of Medicine (the Department) of Boston Children's Hospital (the Hospital), is a Class "A" member. Any person who (i) is a physician-employee of the Foundation with an active medical staff appointment from the Hospital, and (ii) either (A) is a Division Chief of a Division of the Department whose faculty are on the Foundation's payroll or (B) functions as a Division Chief of a Division of the Department whose faculty are not on the Foundation payroll, or (C) has a faculty appointment from Harvard Medical School shall be a Class "B" member. The Physicians Organization at Children's Hospital, Inc. (the PO) is a Class "C" member. All other individuals who hold Harvard appointments other than the Class "A and "B" members shall be Class "D" members.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>The Pediatrician-in-Chief or any Acting Pediatrician-in-Chief, as Chief of the Department of Medicine of Boston Children's Hospital (the Hospital), is the Class "A" member of Children's Hospital Pediatric Associates, Inc. (the Foundation). According to the Articles of Organization, the Class "A" member appoints the board members of the Foundation for a 3-year term at the Foundation's annual meeting.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>The Physicians Organization at Children's Hospital, Inc. (the PO) is a Class "C" member of the Children's Hospital Pediatric Associates, Inc. (the Foundation). The PO provides management services for the Foundation. The PO has the power to approve the independent auditor and legal counsel of the Foundation from a list of firms mutually agreed to by the PO and the Foundation. The PO also has the right to review, but not to approve, the annual budgets and by-law changes of the Foundation. Lastly, Boston Children's Hospital has the right to review for compliance with applicable laws, the general terms of and any modification to physician compensation and benefit plans for all physician employees of the Foundation. As a Class "C" member of the Foundation, the PO attends the Foundation's annual meeting.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>A review is conducted by the President of the Foundation, Wendy Chung, MD, PhD; and the Director of Finance, Susan McBride. A copy of Form 990 will be provided to the Board prior to filing. The detailed review will be conducted before filing the return with the Internal Revenue Services.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>The Physicians Organization at Children's Hospital, Inc. (the PO) administers an annual conflict of interest disclosure process to all of its member Foundations, which asks physicians (officers, top management, and highly compensated employees) and selected Foundation staff to disclose potential conflicts. A disclosure statement will be circulated annually to members of the PO. The audit committee shall determine those individuals (including medical staff members) who shall be required to complete the disclosure statement. The audit committee, at its discretion, may either: 1) refer any or all disclosure statements to the Board of Directors; 2) appoint an ad hoc committee to review and resolve any conflict of interest issues; or 3) review and resolve any conflict of interest issues personally or through a designee(s). Any person not receiving a disclosure statement nevertheless has an affirmative obligation to disclose to the PO President, PO General Counsel, or his/her supervisor whenever he/she believes he/she has or may have a conflict of interest. Similarly, each person completing a disclosure statement has an affirmative obligation to update the statement any time circumstances change and/or he/she believes that a conflict of interest may exist. In the event a conflict of interest is found to exist, the Foundation prohibits the member from voting on any matter to which the conflict relates or otherwise influence the voting on such matter.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>Faculty compensation must comply with the Boston Children's Hospital Physician Compensation Guidelines. These guidelines are developed in consultation with an independent external compensation consulting firm and are approved by the independent Compensation Committee of the Board of Children's Medical Center Corporation and Boston Children's Hospital. The guidelines set the maximum compensation limits based on a peer group analysis for the Foundations. The maximum compensation limits are based on pediatric specialty, sub-specialty, academic rank and include a productivity adjustment. Any proposed compensation that exceeds the limit must be prospectively approved by the independent Compensation Committee of the Board of the Hospital. Annual compensation for individual faculty members is set by the President of each Foundation, reviewed and approved by the Foundation in accordance with the Foundation's compensation policies and procedures. The Foundation's President's compensation is reviewed and approved annually on a prospective basis by the Boston Children's Hospital President/Chief Executive Officer.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The Foundation maintains all financial statements, conflict of interest policies, and governing documents at its main office at 300 Longwood Avenue, Boston, MA 02115. The documents are available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XII, Line 2c:</FormAndLineReferenceDesc>
        <ExplanationTxt>The audit process and scope has not changed from the prior year.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>Boston Children's Hospital</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>300 Longwood Avenue</AddressLine1Txt>
          <CityNm>Boston</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02115</ZIPCd>
        </USAddress>
        <EIN>042774441</EIN>
        <PrimaryActivitiesTxt>Hospital</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>Line 3</PublicCharityStatusTxt>
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        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>Physicians Organization at Children's Hospital Inc</BusinessNameLine1Txt>
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          <AddressLine1Txt>300 Longwood Avenue</AddressLine1Txt>
          <CityNm>Boston</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
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        </USAddress>
        <EIN>043266103</EIN>
        <PrimaryActivitiesTxt>Management services</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>Line 12c, III-FI</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>1</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>1</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>1</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>1</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>1</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>1</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>