Medicare Advantage in Bryan County, Oklahoma
3,840 people in Bryan County, Oklahoma were enrolled in Medicare Advantage in October 2026, 36.6% of 10,480 eligible beneficiaries (+1.6 pts since October 2025). Humana Inc. is the largest parent organization with 49% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 4,204 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 914 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 17 to 9.
Parent organizations in Bryan County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 1,845 | +440 | 48.8% |
| UnitedHealth Group, Inc. | 1,598 | −208 | 42.2% |
| CVS Health Corporation | 236 | +10 | 6.2% |
| Health Care Service Corporation | 61 | −32 | 1.6% |
| Mitchell Family Office | 44 | +4 | 1.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,855 beneficiaries in Bryan County were assigned to 30 Medicare Shared Savings Program ACOs, 55.6% of assignable Original Medicare beneficiaries. Together, roughly 72% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.