Medicare Advantage in Santa Rosa County, Florida
20,968 people in Santa Rosa County, Florida were enrolled in Medicare Advantage in October 2026, 46.2% of 45,433 eligible beneficiaries (+0.3 pts since October 2025). Humana Inc. is the largest parent organization with 40% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,742 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 6,143 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 32 to 28.
Parent organizations in Santa Rosa County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 8,238 | +2,081 | 39.5% |
| UnitedHealth Group, Inc. | 6,409 | +5 | 30.8% |
| Guidewell Mutual Holding Corporation | 2,116 | −777 | 10.2% |
| Health Care Service Corporation | 1,678 | −220 | 8.1% |
| CVS Health Corporation | 1,600 | −115 | 7.7% |
| Devoted Health, Inc. | 454 | +299 | 2.2% |
| Elevance Health, Inc. | 146 | +7 | 0.7% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 94 | +1 | 0.5% |
| Centene Corporation | 91 | −291 | 0.4% |
| Highmark Health | 11 | new | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 5,888 beneficiaries in Santa Rosa County were assigned to 164 Medicare Shared Savings Program ACOs, 34.1% of assignable Original Medicare beneficiaries. Together, roughly 65% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.