Medicare Advantage in Clackamas County, Oregon
66,232 people in Clackamas County, Oregon were enrolled in Medicare Advantage in October 2026, 66.1% of 100,175 eligible beneficiaries (−1.0 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 30% of reported enrollment; 18 parent organizations have 11 or more members and the HHI is 2,019 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 16,612 members here are in plans that terminate or leave the county, and Providence St Joseph Health, PacificSource, Health Care Service Corporation leave. MA plans offered go from 43 to 32.
Parent organizations in Clackamas County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 19,669 | +972 | 29.7% |
| Kaiser Foundation Health Plan, Inc. | 17,321 | +419 | 26.2% |
| Providence St Joseph Health | 12,461 | −334 | 18.8% |
| Cambia Health Solutions, Inc. | 3,996 | −367 | 6.0% |
| Humana Inc. | 2,790 | +612 | 4.2% |
| CVS Health Corporation | 2,214 | +638 | 3.3% |
| Centene Corporation | 2,003 | −581 | 3.0% |
| Devoted Health, Inc. | 1,984 | +541 | 3.0% |
| CareOregon, Inc. | 1,839 | −313 | 2.8% |
| PacificSource | 768 | −753 | 1.2% |
| Providence Health & Services | 368 | +2 | 0.6% |
| Marquis Companies I, Inc. | 236 | +34 | 0.4% |
| Health Care Service Corporation | 153 | −303 | 0.2% |
| Elevance Health, Inc. | 131 | +7 | 0.2% |
| ATRIO Health Plans | 116 | −19 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 11,414 beneficiaries in Clackamas County were assigned to 104 Medicare Shared Savings Program ACOs, 57.8% of assignable Original Medicare beneficiaries. Together, roughly 86% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.