Medicare Advantage in Webb County, Texas
25,849 people in Webb County, Texas were enrolled in Medicare Advantage in October 2026, 65.0% of 39,758 eligible beneficiaries (+2.5 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 52% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 3,203 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 5,534 members here are in plans that terminate or leave the county. MA plans offered go from 41 to 28.
Parent organizations in Webb County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 13,311 | +494 | 51.7% |
| Humana Inc. | 3,619 | +1,296 | 14.0% |
| Health Care Service Corporation | 3,484 | −432 | 13.5% |
| Universal Health Services, Inc. | 2,578 | +979 | 10.0% |
| CVS Health Corporation | 1,749 | −411 | 6.8% |
| Centene Corporation | 719 | −166 | 2.8% |
| Molina Healthcare, Inc. | 184 | −27 | 0.7% |
| Regency ISNP Holdings LLC | 100 | +19 | 0.4% |
| Elevance Health, Inc. | 25 | 0 | under 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, 558 beneficiaries in Webb County were assigned to 71 Medicare Shared Savings Program ACOs, 7.0% 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.