{
 "id": "cms:d7fabe1e-d19b-4333-9eff-e80e0643f2fd",
 "slug": "medicare-monthly-enrollment",
 "source": "data.cms.gov",
 "title": "Medicare Monthly Enrollment",
 "summary": "Monthly counts of people with Medicare by national, state and county level, split into Original Medicare versus Medicare Advantage, and stand alone drug plans versus Medicare Advantage drug plans.",
 "description": "The Medicare Monthly Enrollment data provides current monthly information on the number of Medicare beneficiaries with hospital/medical coverage and prescription drug coverage, available for several geographic areas including national, state/territory, and county. The hospital/medical coverage data can be broken down further by health care delivery (Original Medicare versus Medicare Advantage and Other Health Plans) and the prescription drug coverage data can be examined by those enrolled in stand-alone Prescription Drug Plans and those enrolled in Medicare Advantage Prescription Drug plans. The dataset provides monthly and yearly enrollee trends.",
 "aliases": [
  "medicare enrollment",
  "medicare advantage enrollment",
  "MA enrollment",
  "medicare beneficiaries by state",
  "medicare enrollees by county",
  "how many people have medicare"
 ],
 "keywords": [
  "National",
  "States & Territories",
  "Counties",
  "Medicare",
  "Original Medicare",
  "Medicare Advantage",
  "Medicare Prescription Drug",
  "Beneficiary Enrollment",
  "Health Equity"
 ],
 "themes": [
  "Medicare"
 ],
 "topics": [
  "medicare-enrollment",
  "drugs",
  "medicare-advantage"
 ],
 "category": "summary-statistics-on-beneficiary-enrollment",
 "publisher": "Office of Enterprise Data and Analytics (OEDA)",
 "contact": "IPAG_Data_Products@cms.hhs.gov",
 "landing_url": "https://data.cms.gov/summary-statistics-on-beneficiary-enrollment/medicare-and-medicaid-reports/medicare-monthly-enrollment",
 "csv_url": "https://data.cms.gov/sites/default/files/2026-10/c41a8ac2-8229-4f3b-a4cb-423d9cd5328a/Medicare%20Monthly%20Enrollment%20Data_July%202026.csv",
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 "preview_url": "https://data.cms.gov/data-api/v1/dataset/d7fabe1e-d19b-4333-9eff-e80e0643f2fd/data?size=10",
 "dictionary_url": "https://data.cms.gov/resources/medicare-monthly-enrollment-data-dictionary",
 "dictionary_kind": "page",
 "methodology_urls": [
  "https://data.cms.gov/resources/medicare-monthly-enrollment-methodology"
 ],
 "state_column": "BENE_STATE_ABRVTN",
 "row_count": 587117,
 "posted": "2026-10-22",
 "modified": "2026-10-22",
 "period_start": "2026-07-01",
 "period_end": "2026-07-31",
 "latest_period": "2026-07-01 to 2026-07-31",
 "cadence": "monthly",
 "next_update": null,
 "versions": [
  {
   "label": "2026-07-01",
   "uuid": "d7fabe1e-d19b-4333-9eff-e80e0643f2fd",
   "posted": "2026-10-22",
   "period_start": "2026-07-01",
   "period_end": "2026-07-31"
  }
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 ],
 "caveats": [
  "One file mixes national, state and county rows. Filter on the geographic level column before you add anything up."
 ],
 "curated": true,
 "license": "https://www.usa.gov/government-works",
 "detail_key": "d7fabe1e-d19b-4333-9eff-e80e0643f2fd|2026-10-22",
 "checked": "2026-10-25",
 "cms365": 2,
 "source_name": "data.cms.gov"
}