Medicare Advantage in Loudon County, Tennessee
10,670 people in Loudon County, Tennessee were enrolled in Medicare Advantage in October 2026, 51.9% of 20,562 eligible beneficiaries (−0.2 pts since October 2025). Humana Inc. is the largest parent organization with 51% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 3,393 (highly concentrated). For 2027, 277 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 36 to 38.
Parent organizations in Loudon County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 5,363 | +276 | 50.6% |
| UnitedHealth Group, Inc. | 2,526 | −206 | 23.8% |
| BlueCross BlueShield of Tennessee | 1,677 | +168 | 15.8% |
| CVS Health Corporation | 366 | −10 | 3.4% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 189 | −10 | 1.8% |
| Elevance Health, Inc. | 186 | +15 | 1.8% |
| Health Care Service Corporation | 110 | −26 | 1.0% |
| Devoted Health, Inc. | 108 | +54 | 1.0% |
| Centene Corporation | 84 | −2 | 0.8% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,775 beneficiaries in Loudon County were assigned to 81 Medicare Shared Savings Program ACOs, 22.7% of assignable Original Medicare beneficiaries. Together, roughly 63% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.