#1Clackamas Radiation Oncology Center
Based in OR
Clinical Research Sites in Clackamas County, OR
The top-ranked clinical research sites serving Clackamas County, OR are Clackamas Radiation Oncology Center, Columbia Pain Management and Kaiser Permanente Northwest. We list 152 clinical research sites serving Clackamas County, OR. 30 of the providers shown match an active record from ClinicalTrials.gov, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Clinical Research Sites serving Clackamas County, OR. 152 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked clinical research sites for Clackamas County
#2Columbia Pain Management
Based in Milwaukie, OR#3Kaiser Permanente Northwest
Based in OR#4Kaiser Permanente Sunnyside Medical Center
Based in OR#5Kaiser Portland
Based in OR#6Kaiser Sunnyside Medical Center
Based in OR#7Northwest Cancer Specialists, P.C.
Based in OR#8Providence Cancer Institute Clackamas Clinic
Based in OR#9Providence Milwaukie Hospital
Based in Milwaukie, OR#10Providence Oncology and Hematology Care Southeast
Based in OR
20 more providers serving this area
- Providence Willamette Falls Medical Center, Beavercreek, OR
- Cyn3rgy Research, Gresham, OR (27 mi)
- Legacy Mount Hood Medical Center, Gresham, OR (27 mi)
- OHSU Knight Cancer Institute, Gresham, Gresham, OR (27 mi)
- EyeHealth Northwest, Portland, OR (29 mi)
- Adventist Medical Center, Portland, OR (30 mi)
- OHSU Knight Cancer Institute, East Portland, Portland, OR (30 mi)
- Legacy Meridian Park Hospital, Tualatin, OR (31 mi)
- Legacy Meridian Park Medical Center, Tualatin, OR (31 mi)
- OHSU Knight Cancer Institute, Tualatin, Tualatin, OR (31 mi)
- Oregon Spine Care, Tualatin, OR (31 mi)
- Northwest Research Center, Portland, OR (31 mi)
- Oregon Clinic, Maywood Park, OR (32 mi)
- The Oregon Clinic, Maywood Park, OR (32 mi)
- The Oregon Clinic Gastroenterology-East, Maywood Park, OR (32 mi)
- The Oregon Clinic Pulmonary East, Maywood Park, OR (32 mi)
- Portland Providence Medical Center, Portland, OR (33 mi)
- Providence, Portland, OR (33 mi)
- Providence ALS Center, Portland, OR (33 mi)
- Providence Cancer Center, Portland, OR (33 mi)
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Frequently asked questions
How many clinical research sites serve Clackamas County?
We list 152 clinical research sites serving Clackamas County, OR: 11 based there and 141 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which clinical research sites serve Clackamas County?
The top-ranked clinical research sites serving Clackamas County, OR are Clackamas Radiation Oncology Center, Columbia Pain Management, Kaiser Permanente Northwest, Kaiser Permanente Sunnyside Medical Center and Kaiser Portland. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Clackamas County are verified against official records?
10 of the top 10 match an active official record: Clackamas Radiation Oncology Center (ClinicalTrials.gov), Columbia Pain Management (ClinicalTrials.gov), Kaiser Permanente Northwest (ClinicalTrials.gov), Kaiser Permanente Sunnyside Medical Center (ClinicalTrials.gov) and Kaiser Portland (ClinicalTrials.gov), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
How do sponsors judge a research site?
Common checks are enrollment history in the indication, experienced coordinators, IRB arrangements, start-up time and data quality. ClinicalTrials.gov shows which studies a site has been listed on.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .
Communities served
Lake Oswego, Oregon City, Happy Valley, Wilsonville, West Linn, Milwaukie, Canby, Oak Grove, Oatfield, Sandy, Gladstone, Damascus, Molalla, Jennings Lodge, Estacada, Beavercreek, Mount Hood Villages, Mulino, Boring, Stafford, Johnson City, Rivergrove, Rhododendron, Government Camp, Barlow