Medicare Advantage in Tom Green County, Texas
12,072 people in Tom Green County, Texas were enrolled in Medicare Advantage in October 2026, 48.6% of 24,822 eligible beneficiaries (+0.2 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 55% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,910 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 198 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 18 to 13.
Parent organizations in Tom Green County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 6,593 | −205 | 54.9% |
| Humana Inc. | 3,194 | +522 | 26.6% |
| CVS Health Corporation | 1,635 | −76 | 13.6% |
| Elevance Health, Inc. | 243 | +142 | 2.0% |
| Health Care Service Corporation | 221 | −123 | 1.8% |
| Centene Corporation | 101 | +16 | 0.8% |
| Rifkin Managed Care Holding, LLC | 30 | 0 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 350 beneficiaries in Tom Green County were assigned to 55 Medicare Shared Savings Program ACOs, 3.6% of assignable Original Medicare beneficiaries. Together, roughly 50% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.