Pioneer Accountable Care Organization (ACO)

The Centers for Medicare and Medicaid Services (CMS) has created a set of files that contain Pioneer Accountable Care Organizations information. There are three separate files in the set:

  • Provider-includes one record for each facility or professional participating provider
  • Beneficiary-each record represents an individual beneficiary who was associated with a Pioneer ACO
  • Settlement-one record for each Pioneer ACO provides information on the post-performance year financial settlement

What does this file include? (variable highlights)

  • Provider file
    • Pioneer ACO ID
    • Tax identification number
    • Provider specialty code
  • Beneficiary file
    • Bene ID
    • Pioneer ACO ID
    • Aggregated expenditures and claim counts
  • Settlement file
    • Pioneer ACO ID
    • Beneficiary counts
    • Performance year expenditures and savings

Special considerations

  • Each file needs to be specified separately on a data request.
  • Only the Pioneer ACO Beneficiary file can be linked to other CMS data via the Bene ID.

Availability of this file

2012-2014: Beneficiary, Provider and Settlement file
2015-2016: Beneficiary and Provider file
See what is in this file

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