Medicare Advantage in Marion County, West Virginia
8,336 people in Marion County, West Virginia were enrolled in Medicare Advantage in October 2026, 58.9% of 14,150 eligible beneficiaries (+1.7 pts since October 2025). Humana Inc. is the largest parent organization with 44% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,596 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 457 members here are in plans that terminate or leave the county. MA plans offered go from 36 to 33.
Parent organizations in Marion County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 3,683 | +306 | 44.4% |
| UMWA Health and Retirement Funds | 1,409 | −20 | 17.0% |
| UnitedHealth Group, Inc. | 918 | −167 | 11.1% |
| CVS Health Corporation | 798 | −24 | 9.6% |
| West Virginia United Health System, Inc. | 740 | +328 | 8.9% |
| Highmark Health | 514 | −165 | 6.2% |
| The Health Plan of West Virginia, Inc. | 221 | −5 | 2.7% |
| Elevance Health, Inc. | 18 | +6 | 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, 3,875 beneficiaries in Marion County were assigned to 26 Medicare Shared Savings Program ACOs, 78.1% of assignable Original Medicare beneficiaries. Together, roughly 91% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.