Medicare Advantage in Marengo County, Alabama
3,495 people in Marengo County, Alabama were enrolled in Medicare Advantage in October 2026, 64.2% of 5,444 eligible beneficiaries (+1.1 pts since October 2025). Humana Inc. is the largest parent organization with 57% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,891 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 72 members here are in plans that terminate or leave the county. MA plans offered go from 25 to 24.
Parent organizations in Marengo County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 1,983 | +569 | 57.1% |
| UnitedHealth Group, Inc. | 701 | −434 | 20.2% |
| BlueCross BlueShield of Alabama | 472 | −12 | 13.6% |
| CVS Health Corporation | 178 | −69 | 5.1% |
| Elevance Health, Inc. | 72 | +10 | 2.1% |
| Associated Care Ventures, Inc. | 65 | +3 | 1.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 822 beneficiaries in Marengo County were assigned to 24 Medicare Shared Savings Program ACOs, 56.3% of assignable Original Medicare beneficiaries. Together, roughly 84% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.