Medicare Advantage in Dunn County, Wisconsin
4,846 people in Dunn County, Wisconsin were enrolled in Medicare Advantage in October 2026, 46.2% of 10,484 eligible beneficiaries (−1.7 pts since October 2025). Sanford Health is the largest parent organization with 39% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,675 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 757 members here are in plans that terminate or leave the county. MA plans offered go from 22 to 21.
Parent organizations in Dunn County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Sanford Health | 1,876 | +365 | 39.0% |
| Medica Holding Company | 1,407 | +196 | 29.2% |
| UnitedHealth Group, Inc. | 552 | −175 | 11.5% |
| Elevance Health, Inc. | 509 | −447 | 10.6% |
| Humana Inc. | 370 | −32 | 7.7% |
| Group Health Cooperative of Eau Claire | 49 | +30 | 1.0% |
| CVS Health Corporation | 35 | −2 | 0.7% |
| HealthPartners, Inc. | 18 | +6 | 0.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,558 beneficiaries in Dunn County were assigned to 22 Medicare Shared Savings Program ACOs, 63.2% of assignable Original Medicare beneficiaries. Together, roughly 80% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.