Medicare Advantage in Mason County, Kentucky
2,638 people in Mason County, Kentucky were enrolled in Medicare Advantage in October 2026, 59.8% of 4,412 eligible beneficiaries (+1.1 pts since October 2025). Humana Inc. is the largest parent organization with 47% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 2,878 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 421 members here are in plans that terminate or leave the county. MA plans offered go from 30 to 31.
Parent organizations in Mason County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 1,221 | +368 | 46.7% |
| CVS Health Corporation | 414 | +9 | 15.8% |
| UnitedHealth Group, Inc. | 381 | −171 | 14.6% |
| Elevance Health, Inc. | 357 | −217 | 13.7% |
| Centene Corporation | 128 | +2 | 4.9% |
| Devoted Health, Inc. | 111 | +98 | 4.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 280 beneficiaries in Mason County were assigned to 12 Medicare Shared Savings Program ACOs, 20.2% of assignable Original Medicare beneficiaries. Together, roughly 68% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.