Medicare Advantage in Marion County, Texas
1,698 people in Marion County, Texas were enrolled in Medicare Advantage in October 2026, 52.1% of 3,260 eligible beneficiaries (−0.8 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 44% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 3,221 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 270 members here are in plans that terminate or leave the county, and CHRISTUS Health leaves. MA plans offered go from 19 to 15.
Parent organizations in Marion County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 734 | +15 | 43.9% |
| CVS Health Corporation | 496 | +87 | 29.7% |
| Humana Inc. | 328 | −68 | 19.6% |
| CHRISTUS Health | 85 | +17 | 5.1% |
| Health Care Service Corporation | 29 | −9 | 1.7% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 583 beneficiaries in Marion County were assigned to 18 Medicare Shared Savings Program ACOs, 59.7% of assignable Original Medicare beneficiaries. Together, roughly 81% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.