Medicare Advantage in Union County, Florida
1,322 people in Union County, Florida were enrolled in Medicare Advantage in October 2026, 51.2% of 2,583 eligible beneficiaries (−0.6 pts since October 2025). Humana Inc. is the largest parent organization with 50% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 4,749 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 522 members here are in plans that terminate or leave the county. MA plans offered go from 14 to 12.
Parent organizations in Union County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 651 | +71 | 50.1% |
| UnitedHealth Group, Inc. | 614 | +19 | 47.3% |
| Guidewell Mutual Holding Corporation | 20 | −14 | 1.5% |
| Centene Corporation | 14 | −32 | 1.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 128 beneficiaries in Union County were assigned to 14 Medicare Shared Savings Program ACOs, 14.8% of assignable Original Medicare beneficiaries. Together, roughly 58% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.