Medicare Advantage in Cotton County, Oklahoma
377 people in Cotton County, Oklahoma were enrolled in Medicare Advantage in October 2026, 26.8% of 1,409 eligible beneficiaries (−0.04 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 54% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 3,773 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 11 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 18 to 12.
Parent organizations in Cotton County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 200 | −27 | 53.5% |
| CVS Health Corporation | 83 | +25 | 22.2% |
| Humana Inc. | 75 | +15 | 20.1% |
| Health Care Service Corporation | 16 | 0 | 4.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 390 beneficiaries in Cotton County were assigned to 6 Medicare Shared Savings Program ACOs, 50.1% of assignable Original Medicare beneficiaries. Together, roughly 63% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.