Medicare Advantage in Carroll County, Tennessee
3,374 people in Carroll County, Tennessee were enrolled in Medicare Advantage in October 2026, 43.6% of 7,742 eligible beneficiaries (+0.4 pts since October 2025). BlueCross BlueShield of Tennessee is the largest parent organization with 40% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 3,157 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 239 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 28 to 28.
Parent organizations in Carroll County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| BlueCross BlueShield of Tennessee | 1,340 | +50 | 40.5% |
| UnitedHealth Group, Inc. | 1,243 | +101 | 37.5% |
| Health Care Service Corporation | 224 | −30 | 6.8% |
| Elevance Health, Inc. | 223 | −42 | 6.7% |
| Humana Inc. | 83 | −12 | 2.5% |
| CVS Health Corporation | 81 | −17 | 2.4% |
| Centene Corporation | 78 | +4 | 2.4% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 20 | −2 | 0.6% |
| Highmark Health | 19 | −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, 1,315 beneficiaries in Carroll County were assigned to 33 Medicare Shared Savings Program ACOs, 38.4% of assignable Original Medicare beneficiaries. Together, roughly 65% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.