Medicare Advantage in Bastrop County, Texas
10,493 people in Bastrop County, Texas were enrolled in Medicare Advantage in October 2026, 54.4% of 19,283 eligible beneficiaries (+0.04 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 50% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,881 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 1,029 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 33 to 25.
Parent organizations in Bastrop County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 5,200 | −246 | 50.0% |
| Humana Inc. | 3,754 | +737 | 36.1% |
| Health Care Service Corporation | 886 | −41 | 8.5% |
| CVS Health Corporation | 179 | −28 | 1.7% |
| Centene Corporation | 143 | −122 | 1.4% |
| Regency ISNP Holdings LLC | 134 | −2 | 1.3% |
| Baylor Scott & White Health | 93 | +21 | 0.9% |
| Elevance Health, Inc. | 14 | −11 | 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, 1,566 beneficiaries in Bastrop County were assigned to 51 Medicare Shared Savings Program ACOs, 27.0% of assignable Original Medicare beneficiaries. Together, roughly 67% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.