Medicare Advantage in Brown County, Wisconsin
41,129 people in Brown County, Wisconsin were enrolled in Medicare Advantage in October 2026, 71.8% of 57,310 eligible beneficiaries (−0.1 pts since October 2025). Network Health, Inc. is the largest parent organization with 38% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,853 (highly concentrated). For 2027, 3,483 members here are in plans that terminate or leave the county, and Sanford Health leaves. MA plans offered go from 39 to 33.
Parent organizations in Brown County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Network Health, Inc. | 15,569 | +7,509 | 37.9% |
| UnitedHealth Group, Inc. | 12,924 | −6,643 | 31.5% |
| Humana Inc. | 8,181 | +2,423 | 19.9% |
| HealthPartners, Inc. | 1,593 | −202 | 3.9% |
| Elevance Health, Inc. | 1,148 | −2,162 | 2.8% |
| CVS Health Corporation | 781 | −58 | 1.9% |
| Centene Corporation | 556 | +265 | 1.4% |
| Sanford Health | 134 | +58 | 0.3% |
| Molina Healthcare, Inc. | 93 | +18 | 0.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 90 | −4 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 8,733 beneficiaries in Brown County were assigned to 69 Medicare Shared Savings Program ACOs, 77.4% of assignable Original Medicare beneficiaries. Together, roughly 94% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.