Medicare Advantage in Greene County, Ohio
18,673 people in Greene County, Ohio were enrolled in Medicare Advantage in October 2026, 49.7% of 37,545 eligible beneficiaries (−0.7 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 28% of reported enrollment; 13 parent organizations have 11 or more members and the HHI is 1,980 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 1,512 members here are in plans that terminate or leave the county. MA plans offered go from 65 to 57.
Parent organizations in Greene County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 5,203 | +1,505 | 28.0% |
| Elevance Health, Inc. | 5,062 | −2,150 | 27.2% |
| CVS Health Corporation | 3,350 | +700 | 18.0% |
| Trinity Health Corporation | 1,522 | +754 | 8.2% |
| Humana Inc. | 1,126 | −657 | 6.1% |
| Health Care Service Corporation | 634 | +456 | 3.4% |
| Centene Corporation | 487 | −171 | 2.6% |
| MEDICAL MUTUAL OF OHIO | 433 | −216 | 2.3% |
| Devoted Health, Inc. | 274 | −68 | 1.5% |
| Molina Healthcare, Inc. | 248 | −46 | 1.3% |
| CareSource | 199 | +116 | 1.1% |
| Perennial Consortium, LLC | 47 | new | 0.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 17 | −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, 4,253 beneficiaries in Greene County were assigned to 89 Medicare Shared Savings Program ACOs, 33.1% of assignable Original Medicare beneficiaries. Together, roughly 66% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.