Medicare Advantage in Wood County, Wisconsin
13,815 people in Wood County, Wisconsin were enrolled in Medicare Advantage in October 2026, 66.9% of 20,639 eligible beneficiaries (−1.1 pts since October 2025). Sanford Health is the largest parent organization with 66% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 4,690 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 4,089 members here are in plans that terminate or leave the county, and Aspirus, Inc. leaves. MA plans offered go from 22 to 19.
Parent organizations in Wood County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Sanford Health | 9,099 | +239 | 66.2% |
| Humana Inc. | 1,772 | +1,174 | 12.9% |
| UnitedHealth Group, Inc. | 1,365 | −427 | 9.9% |
| Elevance Health, Inc. | 640 | −1,278 | 4.7% |
| Aspirus, Inc. | 554 | +278 | 4.0% |
| Centene Corporation | 249 | +69 | 1.8% |
| CVS Health Corporation | 50 | −2 | 0.4% |
| Group Health Cooperative of Eau Claire | 14 | new | 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 177 beneficiaries in Wood County were assigned to 31 Medicare Shared Savings Program ACOs, 3.5% of assignable Original Medicare beneficiaries. Together, roughly 68% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.