Medicare Advantage in St. Lucie County, Florida
57,950 people in St. Lucie County, Florida were enrolled in Medicare Advantage in October 2026, 56.7% of 102,271 eligible beneficiaries (+0.1 pts since October 2025). Humana Inc. is the largest parent organization with 47% of reported enrollment; 19 parent organizations have 11 or more members and the HHI is 3,000 (highly concentrated). For 2027, 6,852 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 44 to 35.
Parent organizations in St. Lucie County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 27,078 | +2,602 | 46.9% |
| UnitedHealth Group, Inc. | 14,768 | −127 | 25.6% |
| CVS Health Corporation | 5,672 | −619 | 9.8% |
| Guidewell Mutual Holding Corporation | 2,209 | −923 | 3.8% |
| Elevance Health, Inc. | 1,996 | +80 | 3.5% |
| Centene Corporation | 1,970 | −46 | 3.4% |
| Devoted Health, Inc. | 1,721 | +819 | 3.0% |
| Ultimate Healthcare Holdings, LLC | 1,499 | +611 | 2.6% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 356 | −26 | 0.6% |
| Gold Kidney Health Plan | 154 | +114 | 0.3% |
| Health Care Service Corporation | 147 | −488 | 0.3% |
| Highmark Health | 77 | +11 | 0.1% |
| Independent Living Systems, LLC | 30 | +9 | under 0.1% |
| Horizon Mutual Holdings, Inc | 29 | new | under 0.1% |
| Athena Healthcare Holdings, LLC | 23 | +10 | 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, 14,546 beneficiaries in St. Lucie County were assigned to 276 Medicare Shared Savings Program ACOs, 44.6% of assignable Original Medicare beneficiaries. Together, roughly 76% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.