Medicare Advantage in Brazos County, Texas
15,456 people in Brazos County, Texas were enrolled in Medicare Advantage in October 2026, 50.5% of 30,576 eligible beneficiaries (−0.4 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 49% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,263 (highly concentrated). For 2027, 2,860 members here are in plans that terminate or leave the county, and Health Care Service Corporation, Mitchell Family Office leave. MA plans offered go from 30 to 19.
Parent organizations in Brazos County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 7,476 | +468 | 48.6% |
| Health Care Service Corporation | 4,022 | +123 | 26.1% |
| Baylor Scott & White Health | 1,708 | +156 | 11.1% |
| CVS Health Corporation | 1,329 | −107 | 8.6% |
| Humana Inc. | 775 | −253 | 5.0% |
| Rifkin Managed Care Holding, LLC | 52 | −3 | 0.3% |
| Mitchell Family Office | 18 | −7 | 0.1% |
| Elevance Health, Inc. | 16 | 0 | 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 7,242 beneficiaries in Brazos County were assigned to 76 Medicare Shared Savings Program ACOs, 71.7% of assignable Original Medicare beneficiaries. Together, roughly 86% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.