Skip to main content
U.S. flag

An official website of the United States government

Number of Accountable Care Organization Assigned Beneficiaries by County

Published by Centers for Medicare & Medicaid Services | U.S. Department of Health & Human Services | Catalog Last Checked: July 10, 2026 at 01:44 PM | Dataset Last Updated: November 17, 2025
The Shared Savings Program Number of Accountable Care Organization Assigned Beneficiaries by County dataset provides aggregate data of total assigned beneficiaries by Shared Savings Program ACO for each county where at least one of their assigned beneficiaries resides. Assigned beneficiary person-year counts are based on certified Shared Savings Program ACO Participant Lists and assignment methodology for that performance year.

Resources

21 resources available

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2024-12-01

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2024-12-01

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2023-01-01

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2022-02-01

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2021-01-31

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2017-01-15

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2020-01-01

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2019-01-31

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2019-07-01oc1

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2018-01-15

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2016-01-15

    TEXT/HTML
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2019-01-31

    APPLICATION/VND.MS-EXCEL
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2017-01-15

    APPLICATION/VND.MS-EXCEL
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2019-07-01oc1

    APPLICATION/VND.MS-EXCEL
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2016-01-15

    APPLICATION/VND.MS-EXCEL
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2020-01-01

    APPLICATION/VND.MS-EXCEL
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2018-01-15

    APPLICATION/VND.MS-EXCEL
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2021-01-31

    TEXT/CSV
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2022-02-01

    TEXT/CSV
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2023-01-01

    TEXT/CSV
    Download

  • Number of Accountable Care Organization Assigned Beneficiaries by County : 2024-12-01

    TEXT/CSV
    Download

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

Complete Metadata
@type dcat:Dataset
accessLevel public
accrualPeriodicity R/P1Y
bureauCode 
[
  "009:38"
]
contactPoint 
{
  "fn": "Shared Savings Program - CM",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:SharedSavingsProgram@cms.hhs.gov"
}
dataQuality 
true
describedBy https://data.cms.gov/resources/number-of-accountable-care-organization-assigned-beneficiaries-by-county-data-dictionary-2023
description The Shared Savings Program Number of Accountable Care Organization Assigned Beneficiaries by County dataset provides aggregate data of total assigned beneficiaries by Shared Savings Program ACO for each county where at least one of their assigned beneficiaries resides. Assigned beneficiary person-year counts are based on certified Shared Savings Program ACO Participant Lists and assignment methodology for that performance year.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2024-12-01",
    "mediaType": "text/html",
    "description": "latest",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/ae8c9418-acc9-4442-b217-33291448f6b8/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2024-12-01",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/2f57a742-19a7-44e5-8329-d7ad2b0b632f/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2023-01-01",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/4f64f8d2-f62b-4690-8ce4-85a9cf9adb76/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2022-02-01",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/7071eb0c-71b6-450d-b3c2-077a3166ed46/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2021-01-31",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/95490093-9f62-4566-b9bf-693d2a00fe08/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2017-01-15",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/c2b153f1-8354-4132-b6ac-9817023db82f/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2020-01-01",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/cff04cbb-6267-47ec-b69d-7a2315b36df3/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2019-01-31",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/d076f7f0-536a-4944-aa56-8930ced2a06d/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2019-07-01oc1",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/d73a38fb-2e6e-469f-b369-f685fd45f424/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2018-01-15",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/ee439bd7-ac96-43aa-99c7-86e5c8ede0bc/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2016-01-15",
    "mediaType": "text/html",
    "downloadURL": "https://data.cms.gov/data-api/v1/dataset/ff0d442b-8c0d-44ba-b8cd-6e392e30fab0/data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2019-01-31",
    "mediaType": "application/vnd.ms-excel",
    "downloadURL": "https://data.cms.gov/sites/default/files/2021-11/24b5f85e-8f9f-468e-8b69-75d635f55cb0/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2019_01_01.csv"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2017-01-15",
    "mediaType": "application/vnd.ms-excel",
    "downloadURL": "https://data.cms.gov/sites/default/files/2021-11/51755439-0b6b-4011-a64d-7a04b9bbe7a2/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2017_01_01.csv"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2019-07-01oc1",
    "mediaType": "application/vnd.ms-excel",
    "downloadURL": "https://data.cms.gov/sites/default/files/2021-11/c78a5b90-8011-4d99-bc51-b178b9a559c3/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2019_07_01.csv"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2016-01-15",
    "mediaType": "application/vnd.ms-excel",
    "downloadURL": "https://data.cms.gov/sites/default/files/2021-11/d0115d47-f252-43eb-8647-59d0b611e3ed/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2016_01_01.csv"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2020-01-01",
    "mediaType": "application/vnd.ms-excel",
    "downloadURL": "https://data.cms.gov/sites/default/files/2021-11/d1575906-dc3e-4b88-a661-2f202753017b/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2020_01_01.csv"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2018-01-15",
    "mediaType": "application/vnd.ms-excel",
    "downloadURL": "https://data.cms.gov/sites/default/files/2021-11/d15accad-7f46-4e5e-b091-d4cff3f99c49/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2018_01_01.csv"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2021-01-31",
    "mediaType": "text/csv",
    "downloadURL": "https://data.cms.gov/sites/default/files/2022-09/112e507f-41e0-4c26-8ac5-5fb64e0fc0d0/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2021_01_01.csv"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2022-02-01",
    "mediaType": "text/csv",
    "downloadURL": "https://data.cms.gov/sites/default/files/2023-09/821b7023-f0e9-4452-90ce-eea7db1609d0/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2022_01_01.csv"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2023-01-01",
    "mediaType": "text/csv",
    "downloadURL": "https://data.cms.gov/sites/default/files/2024-11/8a74dd30-06a1-4751-beee-dc0dd3c9d609/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2023_01_01.csv"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Number of Accountable Care Organization Assigned Beneficiaries by County : 2024-12-01",
    "mediaType": "text/csv",
    "downloadURL": "https://data.cms.gov/sites/default/files/2025-11/c9b8923e-5bb4-4d28-8387-48d9bde5e74c/Number_Of_ACO_Assigned_Beneficiaries_by_County_PUF_2024_01_01.csv"
  }
]
identifier https://data.cms.gov/data-api/v1/dataset/ae8c9418-acc9-4442-b217-33291448f6b8/data-viewer
issued 2026-07-10
keyword 
[
  "accountable care organizations",
  "coordinated care",
  "medicare",
  "original medicare",
  "payment models",
  "value-based care"
]
landingPage https://data.cms.gov/medicare-shared-savings-program/number-of-accountable-care-organization-assigned-beneficiaries-by-county
language 
[
  "en-US"
]
license https://www.usa.gov/government-works
modified 2025-11-17
programCode 
[
  "009:000"
]
publisher 
{
  "name": "Centers for Medicare & Medicaid Services",
  "@type": "org:Organization"
}
references 
[
  "https://data.cms.gov/resources/number-of-accountable-care-organization-assigned-beneficiaries-by-county-methodology"
]
temporal 2016-01-01/2024-12-31
theme 
[
  "Medicare"
]
title Number of Accountable Care Organization Assigned Beneficiaries by County

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov