#1Oregon Oncology Specialists
Based in Salem, OR
Clinical Research Sites in Marion County, OR
The top-ranked clinical research sites serving Marion County, OR are Oregon Oncology Specialists, Oregon Oncology Specialists Salem and Retina Consultants, LLC. We list 17 clinical research sites serving Marion County, OR. 17 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 Marion County, OR. 17 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 Marion County
#2Oregon Oncology Specialists Salem
Based in Salem, OR#3Retina Consultants, LLC
Based in Salem, OR#4Salem Hospital
Based in Salem, OR#5Providence Willamette Falls Medical Center
Serves this area from Beavercreek, OR (29 mi)#6Providence Cancer Institute - Newberg Clinic
Serves this area from OR#7Providence Newberg Medical Center
Serves this area from OR#8Clackamas Radiation Oncology Center
Serves this area from OR#9Kaiser Permanente Northwest
Serves this area from OR#10Kaiser Permanente Sunnyside Medical Center
Serves this area from OR
7 more providers serving this area
- Kaiser Portland, OR
- Kaiser Sunnyside Medical Center, OR
- Northwest Cancer Specialists, P.C., OR
- Providence Cancer Institute Clackamas Clinic, OR
- Providence Oncology and Hematology Care Southeast, OR
- Columbia Pain Management, Milwaukie, OR (37 mi)
- Providence Milwaukie Hospital, Milwaukie, OR (37 mi)
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Frequently asked questions
How many clinical research sites serve Marion County?
We list 17 clinical research sites serving Marion County, OR: 4 based there and 13 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 Marion County?
The top-ranked clinical research sites serving Marion County, OR are Oregon Oncology Specialists, Oregon Oncology Specialists Salem, Retina Consultants, LLC, Salem Hospital and Providence Willamette Falls Medical Center. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Marion County are verified against official records?
10 of the top 10 match an active official record: Oregon Oncology Specialists (ClinicalTrials.gov), Oregon Oncology Specialists Salem (ClinicalTrials.gov), Retina Consultants, LLC (ClinicalTrials.gov), Salem Hospital (ClinicalTrials.gov) and Providence Willamette Falls Medical Center (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 Marion County
Communities served
Keizer, Woodburn, Hayesville, Four Corners, Silverton, Stayton, Aumsville, Mount Angel, Hubbard, Jefferson, Sublimity, Gervais, Turner, Aurora, Donald, Gates, Brooks, Labish Village, St. Paul, Scotts Mills, Mehama, Marion, Butteville, Detroit, Idanha