{
 "id": "cms:1cd9eded-d2c9-4215-a064-aac6dae3b714",
 "slug": "aco-reach-aligned-beneficiaries",
 "source": "data.cms.gov",
 "title": "ACO REACH Aligned Beneficiaries",
 "summary": "The Accountable Care Organization (ACO) REACH Aligned Beneficiary Public Use File (PUF) data details Medicare Beneficiaries aligned to the ACO REACH Model, formerly Global and Professional Direct Contracting (GPDC)...",
 "description": "The Accountable Care Organization (ACO) REACH Aligned Beneficiary Public Use File (PUF) data details Medicare Beneficiaries aligned to the ACO REACH Model, formerly Global and Professional Direct Contracting (GPDC) Model, including counties, eligibility months and total aligned beneficiaries. This data is redacted and does not include identifiable information.",
 "aliases": [],
 "keywords": [
  "Medicare",
  "Original Medicare",
  "Value-Based Care",
  "Coordinated Care",
  "Payment Models",
  "Accountable Care Organizations"
 ],
 "themes": [
  "Medicare"
 ],
 "topics": [
  "aco-value-based",
  "spending-utilization",
  "quality"
 ],
 "category": "cms-innovation-center-programs",
 "publisher": "Office of Enterprise Data and Analytics (OEDA)",
 "contact": "ACOREACH@cms.hhs.gov",
 "landing_url": "https://data.cms.gov/cms-innovation-center-programs/accountable-care-models/aco-reach-aligned-beneficiaries",
 "csv_url": "https://data.cms.gov/sites/default/files/2026-07/dd2bd7fa-f824-481a-9f92-980e37ca10e7/py4_algn_bene_puf_rdx.csv",
 "api_url": "https://data.cms.gov/data-api/v1/dataset/1cd9eded-d2c9-4215-a064-aac6dae3b714/data",
 "api_kind": "cms-data-api",
 "preview_url": "https://data.cms.gov/data-api/v1/dataset/1cd9eded-d2c9-4215-a064-aac6dae3b714/data?size=10",
 "dictionary_url": "https://data.cms.gov/resources/aco-reach-aligned-beneficiaries-data-dictionary",
 "dictionary_kind": "page",
 "methodology_urls": [
  "https://data.cms.gov/resources/aco-reach-model-methodology"
 ],
 "state_column": "STATE_NAME",
 "row_count": 12521,
 "posted": "2026-07-20",
 "modified": "2026-07-20",
 "period_start": "2021-01-01",
 "period_end": "2024-12-31",
 "latest_period": "2024-01-01 to 2024-12-31",
 "cadence": "annually",
 "next_update": null,
 "versions": [
  {
   "label": "2024-12-01",
   "uuid": "1cd9eded-d2c9-4215-a064-aac6dae3b714",
   "posted": "2026-07-20",
   "period_start": "2024-01-01",
   "period_end": "2024-12-31"
  },
  {
   "label": "2023-12-01",
   "uuid": "aacfe596-c3c9-4b10-8f1a-67d4811ebd32",
   "posted": "2025-05-21",
   "period_start": "2023-01-01",
   "period_end": "2023-12-31"
  },
  {
   "label": "2022-12-01",
   "uuid": "122f7254-6970-449f-b775-e4c4d9f1b7e6",
   "posted": "2025-05-21",
   "period_start": "2022-01-01",
   "period_end": "2022-12-31"
  },
  {
   "label": "2021-12-03",
   "uuid": "04df9cca-7440-4e9d-a10b-6756d1f5ae6e",
   "posted": "2025-04-25",
   "period_start": "2021-01-01",
   "period_end": "2021-12-31"
  }
 ],
 "columns": [
  {
   "name": "ACO_ID",
   "label": "ACO Identifier",
   "type": "string",
   "meaning": "ACO Identifier Number",
   "source": "cms-dictionary"
  },
  {
   "name": "YEAR",
   "label": "Performance Year",
   "type": "number",
   "meaning": "Year in which the ACO participated",
   "source": "cms-dictionary"
  },
  {
   "name": "STATE_ID",
   "label": "State Identifier",
   "type": "string",
   "meaning": "FIPS state identification code",
   "source": "cms-dictionary"
  },
  {
   "name": "COUNTY_ID",
   "label": "County Identifier",
   "type": "number",
   "meaning": "FIPS county identification code",
   "source": "cms-dictionary"
  },
  {
   "name": "STATE_NAME",
   "label": "State Name",
   "type": "string",
   "meaning": "State name",
   "source": "cms-dictionary"
  },
  {
   "name": "COUNTY_NAME",
   "label": "County Name",
   "type": "string",
   "meaning": "County name",
   "source": "cms-dictionary"
  },
  {
   "name": "ELIG_MONTHS_AD",
   "label": "Eligible Months - Aged & Disabled",
   "type": "number",
   "meaning": "Eligible months accruing to the Aged/Disabled benchmark",
   "source": "cms-dictionary"
  },
  {
   "name": "ELIG_MONTHS_ESRD",
   "label": "Eligible Months - End-Stage Renal Disease",
   "type": "number",
   "meaning": "Eligible months accruing to the ESRD benchmark",
   "source": "cms-dictionary"
  },
  {
   "name": "ELIG_MONTHS_TOTAL",
   "label": "Eligible Months - Total",
   "type": "number",
   "meaning": "Total months",
   "source": "cms-dictionary"
  },
  {
   "name": "ALIGNED_BENEFICIARIES_AD",
   "label": "Aligned Beneficiaries - Aged & Disabled",
   "type": "number",
   "meaning": "Total aligned beneficiaries in Aged/Disabled benchmark",
   "source": "cms-dictionary"
  },
  {
   "name": "ALIGNED_BENEFICIARIES_ESRD",
   "label": "Aligned Beneficiaries - End-Stage Renal Disease",
   "type": "number",
   "meaning": "Total aligned beneficiaries in ESRD benchmark",
   "source": "cms-dictionary"
  }
 ],
 "caveats": [],
 "curated": false,
 "license": "https://www.usa.gov/government-works",
 "detail_key": "1cd9eded-d2c9-4215-a064-aac6dae3b714|2026-07-20",
 "checked": "2026-10-25",
 "source_name": "data.cms.gov"
}