Medicare Advantage in Miller County, Arkansas
4,375 people in Miller County, Arkansas were enrolled in Medicare Advantage in October 2026, 46.1% of 9,481 eligible beneficiaries (+1.2 pts since October 2025). Humana Inc. is the largest parent organization with 51% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 4,276 (highly concentrated). For 2027, 97 members here are in plans that terminate or leave the county. MA plans offered go from 24 to 24.
Parent organizations in Miller County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 2,197 | +279 | 50.7% |
| UnitedHealth Group, Inc. | 1,778 | −49 | 41.0% |
| CVS Health Corporation | 185 | −28 | 4.3% |
| Centene Corporation | 97 | −38 | 2.2% |
| Select Founders, LLC | 52 | +15 | 1.2% |
| Health Care Service Corporation | 26 | +2 | 0.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,741 beneficiaries in Miller County were assigned to 30 Medicare Shared Savings Program ACOs, 71.0% 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.