#1Advanced Research Institute - Portland
Based in Tigard, OR
Clinical Research Sites in Washington County, OR
The top-ranked clinical research sites serving Washington County, OR are Advanced Research Institute - Portland, Advanced Research Institute - Tigard and Center for Cognitive Health. We list 147 clinical research sites serving Washington 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 Washington County, OR. 147 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 Washington County
#2Advanced Research Institute - Tigard
Based in Tigard, OR#3Center for Cognitive Health
Based in West Slope, OR#4Kaiser Permanente Westside Medical Center
Based in OR#5Legacy Meridian Park Hospital
Based in Tualatin, OR#6Legacy Meridian Park Medical Center
Based in Tualatin, OR#7Neural Net Research
Based in West Slope, OR#8Northwest Cancer Specialists PC
Based in Tigard, OR#9Northwest Cancer Specialists, P.C.
Based in Tigard, OR#10Northwest Cancer Specialists, P.C.
Based in Tigard, OR
20 more providers serving this area
- OHSU Knight Cancer Institute, Beaverton, Beaverton, OR
- OHSU Knight Cancer Institute, Tualatin, Tualatin, OR
- Oregon Spine Care, Tualatin, OR
- Portland, Oregon, West Slope, OR
- Providence Brain and Spine Institute, West Slope, OR
- Providence Health & Services, West Slope, OR
- Providence Heart Institute, West Slope, OR
- Providence Heart & Vascular Institute Portland, West Slope, OR
- Providence Investigational Drug Service - Westside, West Slope, OR
- Providence Neurological Services West, West Slope, OR
- Providence Neurological Specialties West, West Slope, OR
- Providence Oncology and Hematology Care Clinic - Westside, West Slope, OR
- Providence Oncology and Hematology Care - Westside, West Slope, OR
- Providence Saint Vincent Medical Center, West Slope, OR
- Providence St. Vincent, West Slope, OR
- Providence St. Vincent Medical Center, West Slope, OR
- Providence St. Vincent Medical Center- Investigational Drug Services, West Slope, OR
- Providence St. Vincent's Medical Center- Site Number : 8400052, West Slope, OR
- Summit Spine, West Slope, OR
- The Oregon Clinic Pulmonary West, Beaverton, OR
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Frequently asked questions
How many clinical research sites serve Washington County?
We list 147 clinical research sites serving Washington County, OR: 30 based there and 117 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 Washington County?
The top-ranked clinical research sites serving Washington County, OR are Advanced Research Institute - Portland, Advanced Research Institute - Tigard, Center for Cognitive Health, Kaiser Permanente Westside Medical Center and Legacy Meridian Park Hospital. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Washington County are verified against official records?
10 of the top 10 match an active official record: Advanced Research Institute - Portland (ClinicalTrials.gov), Advanced Research Institute - Tigard (ClinicalTrials.gov), Center for Cognitive Health (ClinicalTrials.gov), Kaiser Permanente Westside Medical Center (ClinicalTrials.gov) and Legacy Meridian Park Hospital (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 .
Cities in Washington County
Communities served
Bethany, Tualatin, Forest Grove, Sherwood, Cedar Mill, Cornelius, Oak Hills, Bull Mountain, Rockcreek, West Haven-Sylvan, Cedar Hills, West Slope, Garden Home-Whitford, Raleigh Hills, Marlene Village, King City, Metzger, North Plains, Durham, Banks, Gaston, Cherry Grove, Dilley