Medicare Advantage in Stone County, Arkansas
1,958 people in Stone County, Arkansas were enrolled in Medicare Advantage in October 2026, 43.5% of 4,496 eligible beneficiaries (+0.02 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 49% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,038 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 258 members here are in plans that terminate or leave the county, and CVS Health Corporation leaves. MA plans offered go from 32 to 26.
Parent organizations in Stone County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 940 | −45 | 49.0% |
| Centene Corporation | 304 | +1 | 15.8% |
| Humana Inc. | 302 | +105 | 15.7% |
| USAble Mutual Insurance Company | 178 | −9 | 9.3% |
| Health Care Service Corporation | 100 | +83 | 5.2% |
| CVS Health Corporation | 94 | −122 | 4.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,828 beneficiaries in Stone County were assigned to 34 Medicare Shared Savings Program ACOs, 87.1% of assignable Original Medicare beneficiaries. Together, roughly 93% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.