Performance Year 2019 Medicare Shared Savings Program Accountable Care Organizations (As of July 1, 2019) – Participants

The Medicare Shared Savings Program (Shared Savings Program) facilitates coordination among providers to improve the quality of care for Medicare fee-for-service beneficiaries while reducing the growth in health care costs. Eligible providers, hospitals, and suppliers may apply to participate in the Shared Savings Program by creating or participating in an Accountable Care Organization (ACO).

NOTE (1): Data descriptions are available in the Data Dictionary. See the Attachments section on this page to download the Data Dictionary.

NOTE (2): The ACO ID Crosswalk data set includes the un-encrypted ACO ID (Axxxx). Prior to July 2019, the data sets included an encrypted ACO ID (Axxxxx). Research Identifiable Files (RIFs) and Public Use Files (PUFs) created prior to July 2019 identify ACOs using the encrypted ACO ID. RIFs and PUFs created in July 2019 forward will identify ACOs using their un-encrypted ACO ID. To facilitate comparisons between data sets created before July 2019 and after July 2019, we are making a crosswalk available. See the Attachments section on this page to download the SSP ACO ID Crosswalk.

NOTE (3): Excel may drop the leading zero from the ACO’s zip code in the aco_zip column when exporting the csv file. To retain this information, we recommend using the “Import” feature of Excel to manually import the relevant data or exporting the file using one of the other supported file formats.

DISCLAIMER: This information is current as of July 1, 2019. Changes to ACO information occur periodically. Each ACO has the most up-to-date information about their organization. Consider contacting the ACO for the latest information.