Medicare Advantage in Union County, Arkansas
4,022 people in Union County, Arkansas were enrolled in Medicare Advantage in October 2026, 41.6% of 9,676 eligible beneficiaries (+1.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 70% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 5,282 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 122 members here are in plans that terminate or leave the county. MA plans offered go from 30 to 27.
Parent organizations in Union County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 2,794 | +54 | 70.1% |
| Humana Inc. | 716 | +228 | 18.0% |
| Centene Corporation | 193 | −39 | 4.8% |
| CVS Health Corporation | 113 | −7 | 2.8% |
| USAble Mutual Insurance Company | 103 | −43 | 2.6% |
| Select Founders, LLC | 65 | +25 | 1.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,536 beneficiaries in Union County were assigned to 40 Medicare Shared Savings Program ACOs, 53.8% of assignable Original Medicare beneficiaries. Together, roughly 73% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.