#1Maine Eye Center
Serves this area from Portland, ME (4 mi)
Clinical Research Sites in Portland, ME
The top-ranked clinical research sites serving Portland, ME are Maine Eye Center, MaineHealth and Mercy Hospital. We list 46 clinical research sites serving Portland, ME. 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 Portland, ME (Cumberland County). 46 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 Portland
#2MaineHealth
Serves this area from Portland, ME (4 mi)#3Mercy Hospital
Serves this area from Portland, ME (4 mi)#4Portland Gastroenterology Center
Serves this area from Portland, ME (4 mi)#5MaineHealth Cancer Care and IV Therapy - South Portland
Serves this area from South Portland, ME (5 mi)#6MaineHealth Institute for Research
Serves this area from South Portland, ME (5 mi)#7MaineHealth Urology - South Portland
Serves this area from South Portland, ME (5 mi)#8Maine Medical Partners - South Portland
Serves this area from South Portland, ME (5 mi)#9Maine Medical Partners Urology
Serves this area from South Portland, ME (5 mi)#10Maine Health
Serves this area from Portland, ME (6 mi)
20 more providers serving this area
- MaineHealth, Portland, ME (6 mi)
- MaineHealth Maine Medical Center, Portland, ME (6 mi)
- MaineHealth Maine Medical Center - Portland, Portland, ME (6 mi)
- Maine Medical Center-Bramhall Campus, Portland, ME (6 mi)
- Maine Medical Partners, Portland, ME (6 mi)
- Maine Medical Partners Pediatric Specialty Care- Site Number : 840064, Portland, ME (6 mi)
- Maine Medical Partners Surgical Care, Portland, ME (6 mi)
- Maine Center for Cancer Medicine and Blood Disorders - Scarborough, Scarborough, ME (10 mi)
- Maine Center for Cancer Medicine-Scarborough, Scarborough, ME (10 mi)
- Maine Children's Cancer Program, Scarborough, ME (10 mi)
- Maine Children's Cancer Program (MCCP), Scarborough, ME (10 mi)
- MaineHealth Maine Medical Center- Scarborough, Scarborough, ME (10 mi)
- Maine Medical Center, Scarborough, ME (10 mi)
- Maine Medical Center - Scarborough Campus, Scarborough, ME (10 mi)
- Maine Medical Partners Neurology, Scarborough, ME (10 mi)
- New England Cancer Specialists, Scarborough, ME (10 mi)
- New England Cancer Specialists, Westbrook, ME (10 mi)
- Maine Medical Center, Cumberland, ME (12 mi)
- MaineHealth Maine Medical Center - Biddeford, Biddeford, ME (18 mi)
- MaineHealth/SMHC Cancer Care and Blood Disorders-Biddeford, Biddeford, ME (18 mi)
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Frequently asked questions
How many clinical research sites serve Portland?
We list 46 clinical research sites serving Portland, ME: 0 based there and 46 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 Portland?
The top-ranked clinical research sites serving Portland, ME are Maine Eye Center, MaineHealth, Mercy Hospital, Portland Gastroenterology Center and MaineHealth Cancer Care and IV Therapy - South Portland. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Portland are verified against official records?
10 of the top 10 match an active official record: Maine Eye Center (ClinicalTrials.gov), MaineHealth (ClinicalTrials.gov), Mercy Hospital (ClinicalTrials.gov), Portland Gastroenterology Center (ClinicalTrials.gov) and MaineHealth Cancer Care and IV Therapy - South 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 .