Medicare Advantage in Shelby County, Tennessee
81,690 people in Shelby County, Tennessee were enrolled in Medicare Advantage in October 2026, 48.5% of 168,278 eligible beneficiaries (+0.7 pts since October 2025). Humana Inc. is the largest parent organization with 29% of reported enrollment; 13 parent organizations have 11 or more members and the HHI is 2,034 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 6,835 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 44 to 42.
Parent organizations in Shelby County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 23,368 | +2,448 | 28.7% |
| UnitedHealth Group, Inc. | 22,467 | +565 | 27.6% |
| BlueCross BlueShield of Tennessee | 13,263 | +491 | 16.3% |
| Health Care Service Corporation | 8,876 | −1,050 | 10.9% |
| Elevance Health, Inc. | 5,060 | −273 | 6.2% |
| Devoted Health, Inc. | 2,791 | +832 | 3.4% |
| Centene Corporation | 1,818 | −570 | 2.2% |
| Zing Health Consolidator, Inc | 1,779 | +414 | 2.2% |
| CVS Health Corporation | 1,734 | −232 | 2.1% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 166 | −3 | 0.2% |
| Mitchell Family Office | 60 | −16 | under 0.1% |
| BrightSpring Health Services, Inc. | 27 | +5 | under 0.1% |
| Highmark Health | 22 | −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, 10,356 beneficiaries in Shelby County were assigned to 207 Medicare Shared Savings Program ACOs, 17.5% of assignable Original Medicare beneficiaries. Together, roughly 58% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.