Medicare Advantage in Johnson County, Arkansas
3,343 people in Johnson County, Arkansas were enrolled in Medicare Advantage in October 2026, 54.6% of 6,127 eligible beneficiaries (+0.7 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 46% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,996 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 196 members here are in plans that terminate or leave the county. MA plans offered go from 32 to 35.
Parent organizations in Johnson County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,532 | +25 | 46.1% |
| Humana Inc. | 830 | +319 | 25.0% |
| USAble Mutual Insurance Company | 359 | −159 | 10.8% |
| CVS Health Corporation | 303 | −105 | 9.1% |
| Centene Corporation | 220 | −24 | 6.6% |
| Select Founders, LLC | 53 | +6 | 1.6% |
| Health Care Service Corporation | 26 | +3 | 0.8% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,418 beneficiaries in Johnson County were assigned to 26 Medicare Shared Savings Program ACOs, 64.3% of assignable Original Medicare beneficiaries. Together, roughly 84% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.