data.cms.gov

Accountable Care Organizations

The Accountable Care Organizations (ACOs) data provides information on ACOs participating in the Medicare Shared Savings Program (Shared Savings Program), including their name, track status, number of years in the...

Freshness

Last posted
Period covered
Jan 1, 2026 to Dec 31, 2026
Update frequency
Annually

Dates as CMS lists them in its catalog.

Columns 32

ColumnWhat it meansType
aco_idaco_idnumber
aco_nameaco_namestring
aco_service_areaaco_service_areastring
agreement_period_numagreement_period_numstring
initial_start_dateinitial_start_datestring
current_start_datecurrent_start_datedate
re-entering_acore-entering_aconumber
basic_trackbasic_tracknumber
basic_track_levelbasic_track_levelstring
enhanced_trackenhanced_trackstring
high_revenue_acohigh_revenue_aconumber
low_revenue_acolow_revenue_aconumber
adv_payadv_paynumber
aimaimnumber
aipaipnumber
psspssnumber
snf_3-day_rule_waiversnf_3-day_rule_waivernumber
prospective_assignmentprospective_assignmentnumber
retrospective_assignmentretrospective_assignmentnumber
aco_addressaco_addressstring
aco_public_reporting_websiteaco_public_reporting_websitestring
aco_exec_nameaco_exec_namestring
aco_exec_emailaco_exec_emailstring
aco_exec_phoneaco_exec_phonestring
aco_public_nameaco_public_namestring
aco_public_emailaco_public_emailstring
aco_public_phoneaco_public_phonestring
aco_compliance_contact_nameaco_compliance_contact_namestring
aco_medical_director_nameaco_medical_director_namestring
latlatnumber
longlongnumber
ACO PC Flex Modelpc_flex_agreement_statusA voluntary model that focuses on primary care delivery in the Medicare Shared Savings Program (Shared Savings Program). “0/1 flag; =1 if the ACO is approved to participate in the ACO PC Flex model; otherwise 0”number

At a glance

Catalog
data.cms.gov
Publisher
Office of Enterprise Data and Analytics (OEDA)
Rows
511
Columns
32
State column
None found
Topics
ACOs and payment models, Spending and use of services, Quality and ratings
Contact
SharedSavingsProgram@cms.hhs.gov

API

Free, no key needed. This request returns the first 10 rows as JSON:

https://data.cms.gov/data-api/v1/dataset/69ec2609-5ce5-4ce1-b14c-1f8809fda2c2/data?size=10

Versions 14

The newest version is the one linked above. Older releases stay on the official site.

  • 2026-01-02posted Apr 16, 2026
  • 2025-02-01posted Sep 10, 2025
  • 2024-01-24posted Apr 16, 2024
  • 2023-01-13posted Mar 6, 2023
  • 2022-01-01posted Jan 26, 2022
  • 2021-01-11posted Jan 27, 2022
  • 2020-01-07posted Jan 27, 2022
  • 2019-07-31oc1posted Jan 29, 2024
Show 6 older versions
  • 2019-01-01posted Jan 27, 2022
  • 2018-01-01posted Jan 27, 2022
  • 2017-01-01posted Jan 27, 2022
  • 2016-12-31posted Jan 27, 2022
  • 2015-12-31posted Jan 27, 2022
  • 2014-12-31posted Jan 27, 2022

CMS's description

The Accountable Care Organizations (ACOs) data provides information on ACOs participating in the Medicare Shared Savings Program (Shared Savings Program), including their name, track status, number of years in the program, and contact information for key personnel.

Methodology and other documents from CMS:

The summary at the top is the first sentence of this description. Record id cms:69ec2609-5ce5-4ce1-b14c-1f8809fda2c2. This record as JSON.

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