Medicare Advantage in Grady County, Oklahoma
4,581 people in Grady County, Oklahoma were enrolled in Medicare Advantage in October 2026, 37.7% of 12,154 eligible beneficiaries (+0.1 pts since October 2025). Humana Inc. is the largest parent organization with 51% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,589 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 480 members here are in plans that terminate or leave the county, and Health Care Service Corporation, Centene Corporation leave. MA plans offered go from 31 to 23.
Parent organizations in Grady County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 2,304 | +606 | 50.6% |
| UnitedHealth Group, Inc. | 1,371 | −410 | 30.1% |
| MHH Healthcare, L.P. | 443 | −7 | 9.7% |
| CVS Health Corporation | 187 | −12 | 4.1% |
| Health Care Service Corporation | 168 | −38 | 3.7% |
| Centene Corporation | 40 | −25 | 0.9% |
| St Francis Health System & St John Health System | 23 | new | 0.5% |
| Mitchell Family Office | 20 | new | 0.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,078 beneficiaries in Grady County were assigned to 26 Medicare Shared Savings Program ACOs, 56.1% of assignable Original Medicare beneficiaries. Together, roughly 73% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.