Accountable Care Organization Participants

The Accountable Care Organization Participants data presents overview information on ACO participants in the Medicare Shared Savings Program (Shared Savings Program), including their name, track status, number of years in the program, and contact information of key personnel.

NOTE: As CMS migrates its data to this new website redesign, datasets are now listed by Month and Year instead of Performance Year, datasets with a PY 2019A naming convention are listed as being updated by CMS monthly but should appear as updated annually.

DISCLAIMER: This information is current as of the last update. 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.

Data and Resources

Field Value
accessLevel public
accrualPeriodicity R/P1M
bureauCode {009:38}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://healthdata.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
dataQuality true
describedBy https://data.cms.gov/resources/aco-participants-data-dictionary-0
identifier https://data.cms.gov/data-api/v1/dataset/9767cb68-8ea9-4f0b-8179-9431abc89f11/data-viewer
issued 2021-12-22
landingPage https://data.cms.gov/medicare-shared-savings-program/accountable-care-organization-participants
language {en-US}
license https://www.usa.gov/government-works
modified 2022-01-26
programCode {009:000}
publisher Centers for Medicare & Medicaid Services
references {https://data.cms.gov/resources/acos-aco-participants-and-snf-affiliates-methodology}
resource-type Dataset
source_datajson_identifier true
source_hash 1c33fb3f42b4d3be66c701e39888f94c7d9c9818
source_schema_version 1.1
temporal 2014-12-01/2022-01-31
theme {Medicare}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • accountable-care-organizations
  • amerigeo
  • amerigeoss
  • ckan
  • coordinated-care
  • geo
  • geoss
  • medicare
  • national
  • north-america
  • payment-models
  • united-states
  • value-based-care
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer Shared Savings Program - CM
maintainer_email SharedSavingsProgram@cms.hhs.gov
metadata_created 2025-11-21T18:51:35.882318
metadata_modified 2025-11-21T18:51:35.882322
notes The Accountable Care Organization Participants data presents overview information on ACO participants in the Medicare Shared Savings Program (Shared Savings Program), including their name, track status, number of years in the program, and contact information of key personnel. NOTE: As CMS migrates its data to this new website redesign, datasets are now listed by Month and Year instead of Performance Year, datasets with a PY 2019A naming convention are listed as being updated by CMS monthly but should appear as updated annually. DISCLAIMER: This information is current as of the last update. 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.
num_resources 21
num_tags 13
title Accountable Care Organization Participants