#1University of California, Irvine Medical Center
Serves this area from Orange, CA (0 mi)
Clinical Research Sites in Orange, CA
The top-ranked clinical research sites serving Orange, CA are University of California, Irvine Medical Center, Center for Inherited Blood Disorders and Chao Family Comprehensive Cancer Center. We list 980 clinical research sites serving Orange, CA. 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 Orange, CA (Orange County). 980 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 Orange
#2Center for Inherited Blood Disorders
Serves this area from Orange, CA (1 mi)#3Chao Family Comprehensive Cancer Center
Serves this area from Orange, CA (1 mi)#4Chao Family Comprehensive Cancer Center at University of California Irvine Medical Center
Serves this area from Orange, CA (1 mi)#5Chao Family Comprehensive Cancer Center UCI
Serves this area from Orange, CA (1 mi)#6Chao Family Comprehensive Cancer Center, University of California Irvine
Serves this area from Orange, CA (1 mi)#7Children's Hospital of Orange County
Serves this area from Orange, CA (1 mi)#8Childrens Hospital of Orange County
Serves this area from Orange, CA (1 mi)#9Children's Hospital of Orange County (CHOC)
Serves this area from Orange, CA (1 mi)#10Children's Hospital of Orange County Main Campus - Orange
Serves this area from Orange, CA (1 mi)
20 more providers serving this area
- Children's Hospital of Orange County - Orange, Orange, CA (1 mi)
- Children's Hospital of Orange County- Site Number : 840074, Orange, CA (1 mi)
- Children's Hospital, Orange County, Orange, CA (1 mi)
- Children's Hospital Orange County (CHOC), Orange, CA (1 mi)
- Children's Hosp Of Orange, Orange, CA (1 mi)
- Choc, Orange, CA (1 mi)
- CHOC Children's Hospital, Orange, CA (1 mi)
- Clinnova Research, Orange, CA (1 mi)
- Clinnova Research Solutions, Orange, CA (1 mi)
- Diabetes Associates Medical Group, Orange, CA (1 mi)
- Hoag Orthopedics, Orange, CA (1 mi)
- Knowledge Research Center, Orange, CA (1 mi)
- NRC Research Institute, Orange, CA (1 mi)
- Providence St. Joseph Hospital, Orange, CA (1 mi)
- Providence St. Joseph Hospital Orange, Orange, CA (1 mi)
- Saint Joseph Hospital - Orange, Orange, CA (1 mi)
- SDS Clinical Trials, Orange, CA (1 mi)
- St. Joseph Hospital, Orange, CA (1 mi)
- St. Joseph Hospital of Orange, Orange, CA (1 mi)
- St. Joseph Hospital - Orange, Orange, CA (1 mi)
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Frequently asked questions
How many clinical research sites serve Orange?
We list 980 clinical research sites serving Orange, CA: 0 based there and 980 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 Orange?
The top-ranked clinical research sites serving Orange, CA are University of California, Irvine Medical Center, Center for Inherited Blood Disorders, Chao Family Comprehensive Cancer Center, Chao Family Comprehensive Cancer Center at University of California Irvine Medical Center and Chao Family Comprehensive Cancer Center UCI. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Orange are verified against official records?
10 of the top 10 match an active official record: University of California, Irvine Medical Center (ClinicalTrials.gov), Center for Inherited Blood Disorders (ClinicalTrials.gov), Chao Family Comprehensive Cancer Center (ClinicalTrials.gov), Chao Family Comprehensive Cancer Center at University of California Irvine Medical Center (ClinicalTrials.gov) and Chao Family Comprehensive Cancer Center UCI (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 .