Medicare Advantage plans in Williamson, IL, 2027
Williamson, Illinois has 5 Medicare Advantage plans open to everyone for 2027 (14 in 2026) and 4 special needs plans, according to the CMS landscape files; 4 of the open plans have a $0 premium. 9 plans that served the county in 2026 end or leave it, with 1,527 members living here in September 2026.
What changes in Williamson for 2027?
| In the county | 2026 | 2027 | Change |
|---|---|---|---|
| Plans open to everyone | 14 | 5 | ▼down 9 |
| Special needs plans | 4 | 4 | no change |
| Plans with a $0 premium | 12 | 4 | ▼down 8 |
| Plans that lower the Part B premium | 5 | 2 | ▼down 3 |
| Median out-of-pocket limit | $6,750 | $6,750 | no change |
Source: CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision); CMS plan benefit package files, 2027 and 2026.
Which plans can anyone in Williamson join?
| Plan | Premium | Out-of-pocket limit | Part B reduction | 2026 stars |
|---|---|---|---|---|
| Wellcare Simple ValueH1416-084 · HMO-POS | $0 | $5,500 | none | 3 of 5 |
| Wellcare Simple EssentialH5779-009 · HMO | $0 | $5,500 | none | 3 of 5 |
| Humana USAA Honor GivebackR5361-001 · Regional PPO | $0 | $6,750 | $30 | 3 of 5 |
| Wellcare GivebackH5779-010 · HMO | $0 | $7,800 | $37 | 3 of 5 |
| HumanaChoiceR5361-002 · Regional PPO | $87 | $7,700 | none | 3 of 5 |
Source: CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision); CMS plan benefit package files, 2027 and 2026. Stars are the contract's 2026 rating. confirm on Medicare Plan Finder.
Which plans leave Williamson in 2027?
Members of these plans here choose a 2027 plan during open enrollment, October 15 to December 7, 2026; choosing by December 31 means no gap; because their plan is leaving the county, they can still join until the end of February 2027, with coverage from the first of the next month. Each plan's page says what happens to its members.
| 2026 plan | Members here, Sept. 2026 | For 2027 |
|---|---|---|
| Aetna Medicare SignatureH7301-027 | 570 | Not offered |
| HealthSpring True ChoiceH7849-059 | 481 | Not offered |
| Blue Cross Medicare Advantage EssentialH8634-012 | 165 | Not offered |
| Blue Cross Medicare Advantage Dental PremierH8634-021 | 104 | Not offered |
| Blue Cross Medicare Advantage Health ChoiceH8634-018 | 74 | Not offered |
| Aetna Medicare EagleH7301-023 | 63 | Leaves the county |
| Aetna Medicare EnhancedH7301-034 | 41 | Not offered |
| Wellcare Patriot GivebackH5779-011 | 29 | Not offered |
| Blue Cross Medicare Advantage ProtectH8634-019 | fewer than 11 | Not offered |
Source: CMS plan crosswalk from 2026 to 2027 (Oct. 1, 2026); CMS monthly enrollment by plan and by county, September 2026 (CMS hides counts under 11); CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision).
Which special needs plans are sold here?
Open only to people with Medicaid as well as Medicare, with certain chronic conditions, or living in an institution.
| Plan | Who can join | Premium |
|---|---|---|
| Humana Dual Fully IntegratedH4329-001 | Dual-Eligible | $0 |
| Molina Medicare Complete Care PlusH3093-002 | Dual-Eligible | $0 |
| Wellcare Meridian Dual AlignH6971-001 | Dual-Eligible | $0 |
| Aetna Medicare FIDEH9771-001 | Dual-Eligible | $0 |
Source: CMS Medicare Advantage and Part D landscape files for 2027 (Sept. 22, 2026, revised Sept. 30) and 2026 (Sept. 2, 2026 revision).
How many people in Williamson use Medicare Advantage?
6,213 of the county's 16,292 people with Medicare were in a Medicare Advantage plan in September 2026, 38.1%; in Illinois as a whole the share is 43.9%.
Source: CMS Medicare Advantage state and county penetration, September 2026.
What else should you check?
- Medicare Advantage in IllinoisEvery county of the state
- 10 stand-alone drug plans in IllinoisIf you keep Original Medicare
- Is your plan ending?Every plan not offered in 2027