Medicare Advantage in Douglas County, Washington
3,906 people in Douglas County, Washington were enrolled in Medicare Advantage in October 2026, 40.5% of 9,635 eligible beneficiaries (+0.8 pts since October 2025). Centene Corporation is the largest parent organization with 50% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,470 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 1,953 members here are in plans that terminate or leave the county. MA plans offered go from 10 to 7.
Parent organizations in Douglas County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Centene Corporation | 1,917 | −64 | 49.5% |
| Humana Inc. | 1,131 | +313 | 29.2% |
| UnitedHealth Group, Inc. | 433 | −35 | 11.2% |
| Molina Healthcare, Inc. | 166 | +26 | 4.3% |
| CVS Health Corporation | 127 | +6 | 3.3% |
| Community Health Plan of Washington | 95 | −84 | 2.5% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,681 beneficiaries in Douglas County were assigned to 27 Medicare Shared Savings Program ACOs, 79.8% of assignable Original Medicare beneficiaries. Together, roughly 88% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.