Medicare Advantage in Iowa County, Wisconsin
2,278 people in Iowa County, Wisconsin were enrolled in Medicare Advantage in October 2026, 35.5% of 6,421 eligible beneficiaries (−1.3 pts since October 2025). Medica Holding Company is the largest parent organization with 41% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,712 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 287 members here are in plans that terminate or leave the county, and Sanford Health leaves. MA plans offered go from 36 to 27.
Parent organizations in Iowa County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Medica Holding Company | 934 | −42 | 41.2% |
| UnitedHealth Group, Inc. | 612 | +88 | 27.0% |
| Humana Inc. | 335 | +76 | 14.8% |
| Elevance Health, Inc. | 136 | −95 | 6.0% |
| CVS Health Corporation | 93 | +30 | 4.1% |
| Sanford Health | 72 | +41 | 3.2% |
| Medical Associates Clinic, P.C. | 67 | +12 | 3.0% |
| Molina Healthcare, Inc. | 20 | new | 0.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 922 beneficiaries in Iowa County were assigned to 21 Medicare Shared Savings Program ACOs, 31.8% of assignable Original Medicare beneficiaries. Together, roughly 56% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.