Medicare Advantage in Sherman County, Oregon
147 people in Sherman County, Oregon were enrolled in Medicare Advantage in October 2026, 25.8% of 570 eligible beneficiaries (−0.7 pts since October 2025). PacificSource is the largest parent organization with 80% of reported enrollment; 2 parent organizations have 11 or more members and the HHI is 6,765 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 93 members here are in plans that terminate or leave the county. MA plans offered go from 10 to 11.
Parent organizations in Sherman County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| PacificSource | 110 | −1 | 79.7% |
| Humana Inc. | 28 | 0 | 20.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 159 beneficiaries in Sherman County were assigned to 11 Medicare Shared Savings Program ACOs, 53.3% of assignable Original Medicare beneficiaries. Together, roughly 65% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.