Medicare Advantage in Warren County, Tennessee
5,336 people in Warren County, Tennessee were enrolled in Medicare Advantage in October 2026, 51.2% of 10,420 eligible beneficiaries (+0.6 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 33% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,384 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 448 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 42 to 37.
Parent organizations in Warren County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,746 | −20 | 33.0% |
| BlueCross BlueShield of Tennessee | 1,570 | +116 | 29.7% |
| Humana Inc. | 945 | +56 | 17.9% |
| Health Care Service Corporation | 364 | −36 | 6.9% |
| Elevance Health, Inc. | 246 | −1 | 4.7% |
| CVS Health Corporation | 230 | +4 | 4.4% |
| Devoted Health, Inc. | 68 | +25 | 1.3% |
| Missouri Healthcare Advisors, LLC | 44 | +7 | 0.8% |
| Centene Corporation | 41 | −3 | 0.8% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 32 | −1 | 0.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,540 beneficiaries in Warren County were assigned to 42 Medicare Shared Savings Program ACOs, 64.7% of assignable Original Medicare beneficiaries. Together, roughly 83% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.