Medicare Advantage in Tillamook County, Oregon
1,211 people in Tillamook County, Oregon were enrolled in Medicare Advantage in October 2026, 13.5% of 8,945 eligible beneficiaries (+4.0 pts since October 2025). Devoted Health, Inc. is the largest parent organization with 67% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 4,935 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 4 to 5.
Parent organizations in Tillamook County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Devoted Health, Inc. | 786 | new | 66.9% |
| UnitedHealth Group, Inc. | 244 | −17 | 20.8% |
| CVS Health Corporation | 39 | −3 | 3.3% |
| Cambia Health Solutions, Inc. | 34 | +4 | 2.9% |
| Elevance Health, Inc. | 21 | −1 | 1.8% |
| Kaiser Foundation Health Plan, Inc. | 21 | +1 | 1.8% |
| Humana Inc. | 19 | +2 | 1.6% |
| Providence Health & Services | 11 | new | 0.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 624 beneficiaries in Tillamook County were assigned to 43 Medicare Shared Savings Program ACOs, 10.4% of assignable Original Medicare beneficiaries. Together, roughly 22% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.