Medicare Advantage in Rock County, WI, for 2027.
CMS lists 36 Medicare Advantage plans here for 2027, 3 fewer than 2026 (39). 17,072 people in the county had an individual Medicare Advantage plan in October 2026.
Sources: CMS CY2027 plan file (October 2026 release), CMS CY2026 plan file (September 2026 release), CMS enrollment by county (CPSC), October 2026, CMS 2027 Plan Crosswalk (October 1, 2026), CMS 2027 Star Ratings Data Tables (October 8, 2026). Member counts are floors because CMS hides counts of 10 or fewer.
The county in numbers
Plans that end here for 2027
3 plans with members in the county end or leave it, plus 44 with 10 or fewer members here. CMS moves 636 members to another plan, and 10,848 stay in the same plan.
| Plan | Insurer | Members | Why |
|---|---|---|---|
| AARP Medicare Advantage from UHC WI-0017 (HMO-POS) | UnitedHealth | 769 | Plan terminated |
| AARP Medicare Advantage from UHC WI-0007 (PPO) | UnitedHealth | 400 | Plan terminated |
| AARP Medicare Advantage CareFlex from UHC WI-18 (HMO-POS) | UnitedHealth | 109 | Plan terminated |
Where CMS moves members
| 2026 plan | 2027 plan | Members |
|---|---|---|
| Anthem Full Dual Advantage 2 (HMO D-SNP) | Anthem Full Dual Advantage (HMO D-SNP) | 291 |
| Anthem Full Dual Advantage (HMO D-SNP) | Anthem Full Dual Advantage (HMO D-SNP) | 290 |
| Humana USAA Honor Giveback (PPO) | Humana USAA Honor Giveback (PPO) | 55 |
Who holds the members
- UnitedHealth8,327
- Humana3,739
- CVS Health2,529
- Medica Holding Company1,499
- Elevance Health844
- Molina Healthcare96
Individual Medicare Advantage members by parent company, October 2026.
Top rated plans sold here
- Anthem Medicare Advantage 3 (PPO)Elevance Health4.5
- Humana USAA Honor Giveback (PPO)Humana4.5
- HumanaChoice H7617-007 (PPO)Humana4.5
2027 overall Star Rating, 4.5 or more. Each plan's measure stars are in the county lookup.
See every plan, premium and copay in the free lookup.
Sort all 36 plans, open each plan's benefits and star measures, and see what each insurer paid agents in 2026.
Open Rock in the lookupWorking this county for AEP?
The AEP 2027 County Kit puts this county and your others in one file: the plans that end, where members land, what is still sold and a crosswalk sheet, with every number tied to its CMS file.
See the AEP 2027 County KitAll Wisconsin county pages. Facts from public CMS files, prepared by Health and Tech Now. Not plan advice. Check a plan's Summary of Benefits before you enroll.