Medicare Advantage in Trinity County, Texas
2,774 people in Trinity County, Texas were enrolled in Medicare Advantage in October 2026, 56.9% of 4,876 eligible beneficiaries (−0.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 69% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 5,385 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 380 members here are in plans that terminate or leave the county, and Centene Corporation, Health Care Service Corporation leave. MA plans offered go from 19 to 15.
Parent organizations in Trinity County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,882 | +28 | 68.6% |
| Humana Inc. | 705 | +76 | 25.7% |
| CVS Health Corporation | 72 | −20 | 2.6% |
| Health Care Service Corporation | 67 | −7 | 2.4% |
| Centene Corporation | 16 | −14 | 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, 569 beneficiaries in Trinity County were assigned to 28 Medicare Shared Savings Program ACOs, 38.5% of assignable Original Medicare beneficiaries. Together, roughly 74% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.