Health Care Service Corporation: Medicare Advantage counties in 2026 and 2027
In the CMS landscape files for the 50 states and DC, Health Care Service Corporation offers Medicare Advantage plans (with or without drug coverage, excluding Special Needs Plans) in 450 counties for 2027, compared with 948 in 2026.
| State | Counties 2026 | Counties 2027 | Change |
|---|---|---|---|
| Alabama | 31 | 29 | -2 |
| Arizona | 3 | 3 | +0 |
| Arkansas | 43 | 43 | +0 |
| Colorado | 18 | 18 | +0 |
| Connecticut | 6 | 0 | -6 |
| Delaware | 2 | 1 | -1 |
| District of Columbia | 1 | 0 | -1 |
| Florida | 32 | 20 | -12 |
| Georgia | 51 | 45 | -6 |
| Illinois | 100 | 7 | -93 |
| Kansas | 6 | 0 | -6 |
| Kentucky | 5 | 5 | +0 |
| Maryland | 4 | 4 | +0 |
| Mississippi | 24 | 24 | +0 |
| Missouri | 20 | 7 | -13 |
| Montana | 39 | 0 | -39 |
| Nevada | 2 | 2 | +0 |
| New Jersey | 20 | 3 | -17 |
| New Mexico | 31 | 5 | -26 |
| New York | 12 | 0 | -12 |
| North Carolina | 37 | 24 | -13 |
| Ohio | 23 | 23 | +0 |
| Oklahoma | 58 | 6 | -52 |
| Oregon | 4 | 0 | -4 |
| Pennsylvania | 26 | 23 | -3 |
| South Carolina | 16 | 16 | +0 |
| Tennessee | 84 | 83 | -1 |
| Texas | 229 | 47 | -182 |
| Utah | 7 | 0 | -7 |
| Virginia | 11 | 11 | +0 |
| Washington | 3 | 1 | -2 |
Sources
- Centers for Medicare & Medicaid Services, CY2027 Medicare Advantage and Part D Landscape file (data last updated 18 October 2026)
- Centers for Medicare & Medicaid Services, CY2026 Medicare Advantage and Part D Landscape file (September 2026 release)
Checked 29 October 2026. Plans and premiums can change before 1 January 2027. Confirm any plan on Medicare.gov before you enrol.