Medicare Advantage in Butler County, Ohio
43,506 people in Butler County, Ohio were enrolled in Medicare Advantage in October 2026, 55.5% of 78,410 eligible beneficiaries (−0.9 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 26% of reported enrollment; 14 parent organizations have 11 or more members and the HHI is 1,779 (moderately concentrated). HRSA classifies the county as partly rural. For 2027, 4,780 members here are in plans that terminate or leave the county. MA plans offered go from 66 to 58.
Parent organizations in Butler County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 11,482 | −76 | 26.5% |
| CVS Health Corporation | 8,728 | +1,038 | 20.1% |
| Elevance Health, Inc. | 7,717 | −2,973 | 17.8% |
| Humana Inc. | 7,405 | +792 | 17.1% |
| Health Care Service Corporation | 2,624 | +1,967 | 6.0% |
| Trinity Health Corporation | 1,335 | +477 | 3.1% |
| MEDICAL MUTUAL OF OHIO | 1,182 | −866 | 2.7% |
| Molina Healthcare, Inc. | 985 | −28 | 2.3% |
| Devoted Health, Inc. | 965 | +234 | 2.2% |
| CareSource | 479 | +324 | 1.1% |
| Centene Corporation | 287 | −82 | 0.7% |
| Perennial Consortium, LLC | 97 | +50 | 0.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 52 | +2 | 0.1% |
| The Schroer Group, Inc. | 35 | +12 | 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, 7,430 beneficiaries in Butler County were assigned to 99 Medicare Shared Savings Program ACOs, 30.8% of assignable Original Medicare beneficiaries. Together, roughly 69% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.