Medicare Shared Savings Program (Shared Savings Program) ACOs are groups of doctors, hospitals, and other health care providers who collaborate to give coordinated high-quality care to people with Medicare, focusing on delivering the right care at the right time, while avoiding unnecessary services and medical errors. When an ACO succeeds in both delivering high-quality care and spending health care dollars more wisely, the ACO may be eligible to share in the savings it achieves for the Medicare program (also known as performance payments).

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Program Updates 

In the News 

• July 14, 2026: Calendar Year 2027 Payment Policies under the Physician Fee Schedule and Other Changes to Part B Payment and Coverage Policies; Medicare Shared Savings Program Requirements; and Medicare Prescription Drug Inflation Rebate Program, which includes proposed changes to the Shared Savings Program and requests for information.
  • Press Release: CMS Proposes Transformational Medicare Reforms to Expand Accountable Care, Modernize Physician Payment, and Shift from Sick Care to Healthcare
  • Shared Savings Program Fact Sheet: Calendar Year (CY) 2027 Medicare Physician Fee Schedule Proposed Rule (CMS-1848-P) — Medicare Shared Savings Program Proposals
  • Quality Payment Program (QPP): QPP 2027 Proposed Rule Resources
  • PFS Fact Sheet: CY 2027 Medicare Physician Fee Schedule Proposed Rule
  • Proposed Rule: CY 2027 PFS Proposed Rule
• February 4 , 2026: CMS released the Accountable Care Organization (ACO) participation data for the 2026 performance year (PY). To learn more, refer to:
  • Fact Sheet: 2026 Medicare Accountable Care Organization Initiatives Participation Highlights

You can find a full list of Shared Savings Program ACOs, including their ACO participants and Skilled Nursing Facility (SNF) affiliates on the Medicare Shared Savings Program landing page of Data.CMS.gov. 

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Program Resources 

Find information about the Shared Savings Program application process. Learn more >

Find guidance and specification documents relevant to program participation, quality reporting, data and report sharing, beneficiary information, and financial and assignment methodology. Learn more >

Program Data 

Find publicly available datasets related to ACO participation and performance. Learn more >

Find final rules, program statutes, and other regulatory documents for the Shared Savings Program. Learn more >

Contact Information 

Find contact information to use for Shared Savings Program inquiries.