Medicare Advantage in Marshall County, Tennessee
4,223 people in Marshall County, Tennessee were enrolled in Medicare Advantage in October 2026, 53.2% of 7,931 eligible beneficiaries (−0.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 28% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 1,889 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 354 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 37 to 33.
Parent organizations in Marshall County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,191 | −41 | 28.5% |
| BlueCross BlueShield of Tennessee | 1,016 | +51 | 24.3% |
| Health Care Service Corporation | 633 | +11 | 15.2% |
| Humana Inc. | 528 | +105 | 12.6% |
| CVS Health Corporation | 292 | −18 | 7.0% |
| Elevance Health, Inc. | 223 | −66 | 5.3% |
| Centene Corporation | 115 | +3 | 2.8% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 104 | +2 | 2.5% |
| Missouri Healthcare Advisors, LLC | 37 | −4 | 0.9% |
| Devoted Health, Inc. | 35 | new | 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, 661 beneficiaries in Marshall County were assigned to 39 Medicare Shared Savings Program ACOs, 24.4% 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.