Medicare Shared Savings Program Accountable Care Organizations (ACO) Beneficiary-level RIF

CMS has created a set of analytical files that contain data from the Medicare Shared Saving Program. There are two separate files in this data set:

  • The Shared Savings Program Beneficiary-Level Research Identifiable File (RIF)
  • The Shared Savings Program Provider-Level RIF

What does this file include? (variable highlights)

  • ACO ID
  • Assigned in Preliminary/Prospective Assignment Period
  • Assigned in Quarter 1
  • Assigned in Quarter 2
  • Assigned in Quarter 3
  • Assigned in Quarter 4
  • Assigned in Final Reconciliation
  • Part D Eligible Months
  • HICN (populated in PY2013-PY2019/2019-A)
  • Date of birth
  • Date of death
  • Gender
  • Race
  • Medicare Beneficiary Identifier (MBI)

Special considerations

  • This file can be linked to any other CMS file that includes the Bene ID.
  • These files differ from the monthly Claim and Claim Line Feed (CCLF) files active Shared Savings Program ACOs receive from CMS. CCLF files include claims for the ACO’s assigned or assignable beneficiary population. The purpose of the CCLFs is to assist active Shared Savings Program ACOs with coordination of care. In contrast, Shared Savings Program Beneficiary-Level RIFs are statistics on beneficiaries and services included in each ACOs annual reconciliation. CCLF files cannot be linked to the Shared Savings Program Provider or Beneficiary RIFs.
  • Shared Savings Program RIFs do not include Pioneer ACO, Next Generation ACO or Comprehensive End Stage Renal Disease Care (CEC) data.
  • All technical questions related to the Shared Savings Program should be directed to the ACO Information Center. Please redirect your question to or by calling 1-888-734-6433 (select option 1); TTY/TDD 888-734-6563.

Availability of this file


PY 2013-2021
PY 2022: Initial, Q1, Q2, Q3

The Shared Savings Program Beneficiary-Level RIF was produced on an annual basis through Performance Year 2017. Starting Quarter 1 2018 the Shared Savings Program Beneficiary-Level RIF will be provided quarterly and annually. The annual file is typically available in the Fall following the completion of the performance year. The quarterly files are typically available within two months following the end of the quarter.


See what is in this file