Medicare Advantage in Sequoyah County, Oklahoma
4,892 people in Sequoyah County, Oklahoma were enrolled in Medicare Advantage in October 2026, 46.6% of 10,505 eligible beneficiaries (+1.3 pts since October 2025). Humana Inc. is the largest parent organization with 53% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 4,458 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 64 members here are in plans that terminate or leave the county, and Centene Corporation leaves. MA plans offered go from 22 to 20.
Parent organizations in Sequoyah County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 2,566 | +601 | 53.0% |
| UnitedHealth Group, Inc. | 1,954 | −276 | 40.3% |
| CVS Health Corporation | 230 | −78 | 4.7% |
| Centene Corporation | 71 | −60 | 1.5% |
| St Francis Health System & St John Health System | 23 | new | 0.5% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,989 beneficiaries in Sequoyah County were assigned to 28 Medicare Shared Savings Program ACOs, 50.4% of assignable Original Medicare beneficiaries. Together, roughly 74% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.