Medicare Advantage in Adams County, Wisconsin
3,852 people in Adams County, Wisconsin were enrolled in Medicare Advantage in October 2026, 45.3% of 8,495 eligible beneficiaries (+0.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 43% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,623 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 941 members here are in plans that terminate or leave the county, and Aspirus, Inc., Centene Corporation leave. MA plans offered go from 26 to 20.
Parent organizations in Adams County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,631 | +125 | 42.6% |
| Sanford Health | 826 | +106 | 21.6% |
| Humana Inc. | 584 | +222 | 15.3% |
| CVS Health Corporation | 257 | +141 | 6.7% |
| Elevance Health, Inc. | 248 | −412 | 6.5% |
| Aspirus, Inc. | 134 | +86 | 3.5% |
| Centene Corporation | 107 | +12 | 2.8% |
| Health Care Service Corporation | 14 | −2 | 0.4% |
| Network Health, Inc. | 13 | new | 0.3% |
| Molina Healthcare, Inc. | 13 | 0 | 0.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,058 beneficiaries in Adams County were assigned to 29 Medicare Shared Savings Program ACOs, 33.5% of assignable Original Medicare beneficiaries. Together, roughly 64% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.