Medicare Advantage in Union County, New Mexico
231 people in Union County, New Mexico were enrolled in Medicare Advantage in October 2026, 23.2% of 996 eligible beneficiaries (+2.2 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 84% of reported enrollment; 3 parent organizations have 11 or more members and the HHI is 7,184 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 3 to 3.
Parent organizations in Union County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 183 | +25 | 83.9% |
| Presbyterian Healthcare Services | 22 | −3 | 10.1% |
| Health Care Service Corporation | 13 | new | 6.0% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 28 beneficiaries in Union County were assigned to 6 Medicare Shared Savings Program ACOs, 5.1% of assignable Original Medicare beneficiaries. Together, roughly 27% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.