Medicare Advantage in Milwaukee County, Wisconsin
113,718 people in Milwaukee County, Wisconsin were enrolled in Medicare Advantage in October 2026, 68.2% of 166,801 eligible beneficiaries (+0.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 60% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 3,978 (highly concentrated). For 2027, 17,902 members here are in plans that terminate or leave the county. MA plans offered go from 34 to 33.
Parent organizations in Milwaukee County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 67,918 | −1,874 | 59.9% |
| Humana Inc. | 16,599 | +1,489 | 14.6% |
| Network Health, Inc. | 11,116 | +5,209 | 9.8% |
| CVS Health Corporation | 7,067 | +291 | 6.2% |
| Elevance Health, Inc. | 6,520 | −2,811 | 5.7% |
| Centene Corporation | 3,370 | +719 | 3.0% |
| Molina Healthcare, Inc. | 484 | +106 | 0.4% |
| CareSource | 269 | −139 | 0.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 45 | −8 | under 0.1% |
| Health Care Service Corporation | 21 | +7 | under 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, 22,033 beneficiaries in Milwaukee County were assigned to 131 Medicare Shared Savings Program ACOs, 59.8% of assignable Original Medicare beneficiaries. Together, roughly 87% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.