County Plan Watch
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What changed in Medicare Advantage in your county for 2027

Across the 50 states and DC, the 2027 CMS plan files list 55,606 county listings of Medicare Advantage plans with drug coverage, compared with 62,646 for 2026. By our count, 187 of 3,143 US counties have no such plan for 2027, up from 117 in 2026.

Find your county

Before you choose a plan

Compare plans for your ZIP code, drugs and doctors on the official Medicare Plan Finder, or call 1-800-MEDICARE (1-800-633-4227). Free, unbiased counselling is available from your State Health Insurance Assistance Program at shiphelp.org.

Biggest reductions in plans with drug coverage

County20262027Change
McHenry County, IL3920-19
Clear Creek County, CO3015-15
Henry County, OH3823-15
Wyandot County, OH3823-15
Harris County, TX5641-15
Randolph County, IL217-14
Cuming County, NE206-14
Paulding County, OH3824-14
Ross County, OH4026-14
Van Wert County, OH3824-14
Collin County, TX4632-14
Willacy County, TX4026-14

Companies with the largest county reductions

Parent companyCounties 2026Counties 2027Change
Health Care Service Corporation948450-498
Centene Corporation1,7311,387-344
Blue Cross Blue Shield of Michigan Mutual Ins. Co.299106-193
UnitedHealth Group, Inc.2,5972,457-140
Group 10011380-138
CVS Health Corporation2,0831,960-123

All companies

Sources

  1. Centers for Medicare & Medicaid Services, CY2027 Medicare Advantage and Part D Landscape file (data last updated 18 October 2026)
  2. Centers for Medicare & Medicaid Services, CY2026 Medicare Advantage and Part D Landscape file (September 2026 release)
  3. US Census Bureau, 2024 Gazetteer Files, counties

Checked 29 October 2026. Plans and premiums can change before 1 January 2027. Confirm any plan on Medicare.gov before you enrol.