Medicare Advantage in Warren County, Ohio
25,859 people in Warren County, Ohio were enrolled in Medicare Advantage in October 2026, 52.6% of 49,163 eligible beneficiaries (−1.0 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 24% of reported enrollment; 14 parent organizations have 11 or more members and the HHI is 1,814 (highly concentrated). For 2027, 1,290 members here are in plans that terminate or leave the county. MA plans offered go from 64 to 57.
Parent organizations in Warren County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 6,270 | −61 | 24.3% |
| Elevance Health, Inc. | 5,721 | −2,429 | 22.2% |
| CVS Health Corporation | 5,163 | +952 | 20.0% |
| Humana Inc. | 4,207 | +732 | 16.3% |
| Health Care Service Corporation | 1,472 | +1,155 | 5.7% |
| Trinity Health Corporation | 1,057 | +694 | 4.1% |
| MEDICAL MUTUAL OF OHIO | 752 | −553 | 2.9% |
| Devoted Health, Inc. | 369 | +53 | 1.4% |
| Molina Healthcare, Inc. | 307 | −26 | 1.2% |
| CareSource | 181 | +127 | 0.7% |
| Perennial Consortium, LLC | 119 | +25 | 0.5% |
| Centene Corporation | 90 | −44 | 0.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 58 | −4 | 0.2% |
| The Schroer Group, Inc. | 12 | +1 | 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, 4,109 beneficiaries in Warren County were assigned to 106 Medicare Shared Savings Program ACOs, 26.0% of assignable Original Medicare beneficiaries. Together, roughly 65% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.