Medicare Advantage in Hamilton County, Texas
1,304 people in Hamilton County, Texas were enrolled in Medicare Advantage in October 2026, 50.6% of 2,575 eligible beneficiaries (−0.6 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 60% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 4,155 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 207 members here are in plans that terminate or leave the county, and CVS Health Corporation leaves. MA plans offered go from 31 to 23.
Parent organizations in Hamilton County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 767 | +62 | 59.6% |
| Baylor Scott & White Health | 284 | +28 | 22.1% |
| Humana Inc. | 92 | +11 | 7.2% |
| CVS Health Corporation | 88 | −7 | 6.8% |
| Health Care Service Corporation | 43 | −11 | 3.3% |
| Centene Corporation | 12 | −41 | 0.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 148 beneficiaries in Hamilton County were assigned to 18 Medicare Shared Savings Program ACOs, 14.8% of assignable Original Medicare beneficiaries. Together, roughly 58% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.