Medicare Advantage in Grant County, Wisconsin
6,145 people in Grant County, Wisconsin were enrolled in Medicare Advantage in October 2026, 50.2% of 12,237 eligible beneficiaries (−1.3 pts since October 2025). Medical Associates Clinic, P.C. is the largest parent organization with 47% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 3,749 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 689 members here are in plans that terminate or leave the county. MA plans offered go from 15 to 12.
Parent organizations in Grant County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Medical Associates Clinic, P.C. | 2,858 | +26 | 46.9% |
| UnitedHealth Group, Inc. | 2,348 | +260 | 38.5% |
| Medica Holding Company | 390 | −36 | 6.4% |
| Elevance Health, Inc. | 275 | −189 | 4.5% |
| Humana Inc. | 140 | −29 | 2.3% |
| CVS Health Corporation | 38 | +3 | 0.6% |
| Group Health Cooperative of Eau Claire | 20 | new | 0.3% |
| CareSource | 14 | +1 | 0.2% |
| Molina Healthcare, Inc. | 13 | new | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,672 beneficiaries in Grant County were assigned to 39 Medicare Shared Savings Program ACOs, 37.1% of assignable Original Medicare beneficiaries. Together, roughly 69% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.