Medicare Advantage in Stewart County, Tennessee
1,549 people in Stewart County, Tennessee were enrolled in Medicare Advantage in October 2026, 41.0% of 3,780 eligible beneficiaries (+0.4 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 30% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,160 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 98 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 36 to 34.
Parent organizations in Stewart County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 459 | −27 | 30.3% |
| BlueCross BlueShield of Tennessee | 371 | +19 | 24.5% |
| Humana Inc. | 343 | +53 | 22.7% |
| Health Care Service Corporation | 116 | −3 | 7.7% |
| Elevance Health, Inc. | 99 | −25 | 6.5% |
| CVS Health Corporation | 63 | +2 | 4.2% |
| Centene Corporation | 36 | −1 | 2.4% |
| Devoted Health, Inc. | 27 | new | 1.8% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 928 beneficiaries in Stewart County were assigned to 22 Medicare Shared Savings Program ACOs, 60.5% of assignable Original Medicare beneficiaries. Together, roughly 77% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.