Medicare Advantage in St. Clair County, Alabama
14,784 people in St. Clair County, Alabama were enrolled in Medicare Advantage in October 2026, 60.4% of 24,463 eligible beneficiaries (+1.0 pts since October 2025). Triton Health Systems, L.L.C. is the largest parent organization with 22% of reported enrollment; 11 parent organizations have 11 or more members and the HHI is 1,784 (moderately concentrated). HRSA classifies the county as partly rural. For 2027, 465 members here are in plans that terminate or leave the county. MA plans offered go from 39 to 41.
Parent organizations in St. Clair County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Triton Health Systems, L.L.C. | 3,263 | +98 | 22.1% |
| UnitedHealth Group, Inc. | 3,072 | −1,727 | 20.8% |
| Humana Inc. | 3,056 | +2,023 | 20.7% |
| BlueCross BlueShield of Alabama | 2,558 | +77 | 17.4% |
| Health Care Service Corporation | 1,503 | +92 | 10.2% |
| CVS Health Corporation | 619 | −43 | 4.2% |
| Elevance Health, Inc. | 295 | −1 | 2.0% |
| Devoted Health, Inc. | 261 | +106 | 1.8% |
| Highmark Health | 77 | −3 | 0.5% |
| Associated Care Ventures, Inc. | 21 | −5 | 0.1% |
| UMWA Health and Retirement Funds | 16 | +3 | 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, 2,135 beneficiaries in St. Clair County were assigned to 49 Medicare Shared Savings Program ACOs, 39.5% 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.