Medicare Advantage in Shelby County, Alabama
28,215 people in Shelby County, Alabama were enrolled in Medicare Advantage in October 2026, 61.0% of 46,249 eligible beneficiaries (+0.1 pts since October 2025). BlueCross BlueShield of Alabama is the largest parent organization with 31% of reported enrollment; 12 parent organizations have 11 or more members and the HHI is 1,913 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 922 members here are in plans that terminate or leave the county. MA plans offered go from 37 to 43.
Parent organizations in Shelby County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| BlueCross BlueShield of Alabama | 8,608 | +189 | 30.6% |
| Humana Inc. | 6,226 | +4,456 | 22.1% |
| UnitedHealth Group, Inc. | 4,284 | −4,179 | 15.2% |
| Triton Health Systems, L.L.C. | 3,048 | +149 | 10.8% |
| Health Care Service Corporation | 2,774 | +189 | 9.8% |
| Elevance Health, Inc. | 1,515 | +42 | 5.4% |
| CVS Health Corporation | 992 | −19 | 3.5% |
| Devoted Health, Inc. | 574 | +196 | 2.0% |
| UMWA Health and Retirement Funds | 72 | −2 | 0.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 37 | +2 | 0.1% |
| Associated Care Ventures, Inc. | 21 | −1 | under 0.1% |
| Highmark Health | 17 | +1 | 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, 5,451 beneficiaries in Shelby County were assigned to 94 Medicare Shared Savings Program ACOs, 45.1% of assignable Original Medicare beneficiaries. Together, roughly 79% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.