Medicare Advantage in Marshall County, Kentucky
4,272 people in Marshall County, Kentucky were enrolled in Medicare Advantage in October 2026, 46.2% of 9,240 eligible beneficiaries (+0.9 pts since October 2025). Humana Inc. is the largest parent organization with 50% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,045 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 241 members here are in plans that terminate or leave the county. MA plans offered go from 33 to 29.
Parent organizations in Marshall County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 2,095 | +542 | 49.6% |
| Elevance Health, Inc. | 589 | −241 | 13.9% |
| UnitedHealth Group, Inc. | 573 | −254 | 13.6% |
| CVS Health Corporation | 508 | +118 | 12.0% |
| Centene Corporation | 302 | −17 | 7.1% |
| Highmark Health | 159 | −5 | 3.8% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,501 beneficiaries in Marshall County were assigned to 28 Medicare Shared Savings Program ACOs, 63.9% of assignable Original Medicare beneficiaries. Together, roughly 81% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.