Medicare Advantage in Douglas County, Oregon
18,584 people in Douglas County, Oregon were enrolled in Medicare Advantage in October 2026, 50.9% of 36,497 eligible beneficiaries (+0.1 pts since October 2025). ATRIO Health Plans is the largest parent organization with 67% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 4,878 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 4,706 members here are in plans that terminate or leave the county, and Cambia Health Solutions, Inc. leaves. MA plans offered go from 12 to 4.
Parent organizations in Douglas County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| ATRIO Health Plans | 12,342 | +415 | 66.8% |
| Centene Corporation | 2,791 | −62 | 15.1% |
| Cambia Health Solutions, Inc. | 2,500 | −138 | 13.5% |
| UnitedHealth Group, Inc. | 540 | +2 | 2.9% |
| CVS Health Corporation | 128 | −11 | 0.7% |
| Elevance Health, Inc. | 91 | −5 | 0.5% |
| California Physicians' Service | 38 | 0 | 0.2% |
| Humana Inc. | 23 | 0 | 0.1% |
| AllCare Health, Inc. | 21 | −7 | 0.1% |
| Highmark Health | 11 | new | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 6,949 beneficiaries in Douglas County were assigned to 58 Medicare Shared Savings Program ACOs, 55.2% of assignable Original Medicare beneficiaries. Together, roughly 78% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.