Medicare Advantage in Marathon County, WI, for 2027.
CMS lists 30 Medicare Advantage plans here for 2027, 2 fewer than 2026 (32). 21,018 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
4 plans with members in the county end or leave it, plus 26 with 10 or fewer members here. CMS moves 870 members to another plan, and 14,496 stay in the same plan.
| Plan | Insurer | Members | Why |
|---|---|---|---|
| Essence Rx (HMO-POS) | Sanford Health | 2,824 | Plan terminated |
| Aspirus Health Plan Essential Rx (PPO) | Aspirus | 1,382 | Plan terminated |
| Aspirus Health Plan Elite (PPO) | Aspirus | 222 | Plan terminated |
| Ally Rx (HMO D-SNP) | Sanford Health | 135 | 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) | 294 |
| Spirit (HMO-POS) | Compass (HMO) | 288 |
| Anthem Full Dual Advantage (HMO D-SNP) | Anthem Full Dual Advantage (HMO D-SNP) | 259 |
| Humana USAA Honor Giveback (PPO) | Humana USAA Honor Giveback (PPO) | 29 |
Who holds the members
- Sanford Health11,924
- Humana3,667
- UnitedHealth2,515
- Aspirus1,604
- Elevance Health803
- Centene287
Individual Medicare Advantage members by parent company, October 2026.
Top rated plans sold here
- Anthem Medicare Advantage 3 (PPO)Elevance Health4.5
- Humana Full Access (PPO)Humana4.5
- Humana USAA Honor Giveback (PPO)Humana4.5
- HumanaChoice - Diabetes and Heart (PPO C-SNP)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 30 plans, open each plan's benefits and star measures, and see what each insurer paid agents in 2026.
Open Marathon 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.