Medicare Advantage in Brown County, Texas
3,997 people in Brown County, Texas were enrolled in Medicare Advantage in October 2026, 39.7% of 10,070 eligible beneficiaries (+0.05 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 3,715 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 156 members here are in plans that terminate or leave the county. MA plans offered go from 8 to 7.
Parent organizations in Brown County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,937 | −610 | 49.0% |
| Humana Inc. | 1,395 | +623 | 35.3% |
| Elevance Health, Inc. | 251 | +116 | 6.4% |
| CVS Health Corporation | 137 | −5 | 3.5% |
| Centene Corporation | 124 | −9 | 3.1% |
| Health Care Service Corporation | 46 | +6 | 1.2% |
| Rifkin Managed Care Holding, LLC | 41 | −31 | 1.0% |
| Consolidated Assoc of Railroad Employees HC | 20 | 0 | 0.5% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 327 beneficiaries in Brown County were assigned to 33 Medicare Shared Savings Program ACOs, 7.4% of assignable Original Medicare beneficiaries. Together, roughly 44% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.