Medicare Advantage in Pierce County, Wisconsin
4,950 people in Pierce County, Wisconsin were enrolled in Medicare Advantage in October 2026, 51.9% of 9,531 eligible beneficiaries (−0.5 pts since October 2025). Medica Holding Company is the largest parent organization with 64% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 4,342 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 521 members here are in plans that terminate or leave the county, and Sanford Health leaves. MA plans offered go from 23 to 16.
Parent organizations in Pierce County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Medica Holding Company | 3,141 | +368 | 63.7% |
| UnitedHealth Group, Inc. | 552 | −250 | 11.2% |
| Sanford Health | 409 | +87 | 8.3% |
| HealthPartners, Inc. | 331 | +48 | 6.7% |
| Humana Inc. | 312 | +154 | 6.3% |
| Elevance Health, Inc. | 102 | −420 | 2.1% |
| Aware Integrated, Inc. | 32 | new | 0.6% |
| CVS Health Corporation | 28 | +3 | 0.6% |
| Group Health Cooperative of Eau Claire | 24 | new | 0.5% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 632 beneficiaries in Pierce County were assigned to 25 Medicare Shared Savings Program ACOs, 21.0% of assignable Original Medicare beneficiaries. Together, roughly 62% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.