Medicare Advantage in Monroe County, Florida
3,653 people in Monroe County, Florida were enrolled in Medicare Advantage in October 2026, 18.9% of 19,296 eligible beneficiaries (−1.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 49% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,237 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 541 members here are in plans that terminate or leave the county. MA plans offered go from 7 to 7.
Parent organizations in Monroe County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,724 | −407 | 48.8% |
| Humana Inc. | 791 | +187 | 22.4% |
| Guidewell Mutual Holding Corporation | 599 | +66 | 17.0% |
| CVS Health Corporation | 269 | −7 | 7.6% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 66 | −8 | 1.9% |
| Elevance Health, Inc. | 47 | −7 | 1.3% |
| Athena Healthcare Holdings, LLC | 19 | new | 0.5% |
| Health Care Service Corporation | 16 | +1 | 0.5% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,475 beneficiaries in Monroe County were assigned to 235 Medicare Shared Savings Program ACOs, 31.8% of assignable Original Medicare beneficiaries. Together, roughly 45% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.