Medicare Advantage in Iron County, Wisconsin
1,279 people in Iron County, Wisconsin were enrolled in Medicare Advantage in October 2026, 54.5% of 2,348 eligible beneficiaries (−1.1 pts since October 2025). Sanford Health is the largest parent organization with 62% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 4,120 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 393 members here are in plans that terminate or leave the county, and Aspirus, Inc. leaves. MA plans offered go from 23 to 19.
Parent organizations in Iron County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Sanford Health | 774 | +51 | 61.6% |
| UnitedHealth Group, Inc. | 157 | −39 | 12.5% |
| Humana Inc. | 116 | +68 | 9.2% |
| Elevance Health, Inc. | 88 | −111 | 7.0% |
| Aspirus, Inc. | 52 | +27 | 4.1% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 44 | −2 | 3.5% |
| CVS Health Corporation | 13 | 0 | 1.0% |
| Medica Holding Company | 12 | new | 1.0% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 95 beneficiaries in Iron County were assigned to 22 Medicare Shared Savings Program ACOs, 12.3% of assignable Original Medicare beneficiaries. Together, roughly 60% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.