#1Clinical Innovations Inc
Serves this area from Bellflower, CA (3 mi)
Clinical Research Sites in Norwalk, CA
The top-ranked clinical research sites serving Norwalk, CA are Clinical Innovations Inc, Clinical Innovations, Inc, dba CITrials and Core Healthcare Group. We list 992 clinical research sites serving Norwalk, 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 Norwalk, CA (Los Angeles County). 992 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 Norwalk
#2Clinical Innovations, Inc, dba CITrials
Serves this area from Bellflower, CA (3 mi)#3Core Healthcare Group
Serves this area from Cerritos, CA (3 mi)#4Helios Clinical Research
Serves this area from Cerritos, CA (3 mi)#5Helios CR Inc./RadNet
Serves this area from Cerritos, CA (3 mi)#6Kaiser Permanente-Bellflower
Serves this area from Bellflower, CA (3 mi)#7Kaiser Permanente Bellflower Medical Offices
Serves this area from Bellflower, CA (3 mi)#8Onco Inst of Hope and Innovation
Serves this area from Cerritos, CA (3 mi)#9The Oncology Institute Of Hope And Innovation
Serves this area from Cerritos, CA (3 mi)#10TOI - Clinical Research
Serves this area from Cerritos, CA (3 mi)
20 more providers serving this area
- Kaiser Permanente Downey Medical Center, Downey, CA (3 mi)
- Rancho Los Amigos National Rehabilitation Center, Downey, CA (3 mi)
- Rancho Research Institute, Downey, CA (3 mi)
- Advanced Medical Research, La Palma, CA (5 mi)
- Arthritis & Osteoporosis Medical Center, Inc - La Palma, La Palma, CA (5 mi)
- Imax Clinical Trials, LLC, La Palma, CA (5 mi)
- Center for Clinical Trials, LLC, Paramount, CA (5 mi)
- Golden Optometric Group, West Whittier-Los Nietos, CA (5 mi)
- Arthur F Gelb MD, Lakewood, CA (6 mi)
- Arthur F Gelb Medical Corporation, Lakewood, CA (6 mi)
- Cancer and Blood Specialty Clinic, Lakewood, CA (6 mi)
- CNRI Los Angeles LLC, Pico Rivera, CA (6 mi)
- Keck Medicine of USC Buena Park, Buena Park, CA (6 mi)
- American Institute of Research, Whittier, CA (6 mi)
- Innovative Clinical Research Institute, Whittier, CA (6 mi)
- Medvin Clinical Research, Whittier, CA (6 mi)
- Medvin Clinical Research - Whittier, Whittier, CA (6 mi)
- PIH Health, Whittier, CA (6 mi)
- PIH Health Hematology Medical Oncology, Whittier, CA (6 mi)
- PIH Health Hospital, Whittier, CA (6 mi)
Request quotes
Frequently asked questions
How many clinical research sites serve Norwalk?
We list 992 clinical research sites serving Norwalk, CA: 0 based there and 992 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 Norwalk?
The top-ranked clinical research sites serving Norwalk, CA are Clinical Innovations Inc, Clinical Innovations, Inc, dba CITrials, Core Healthcare Group, Helios Clinical Research and Helios CR Inc./RadNet. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Norwalk are verified against official records?
10 of the top 10 match an active official record: Clinical Innovations Inc (ClinicalTrials.gov), Clinical Innovations, Inc, dba CITrials (ClinicalTrials.gov), Core Healthcare Group (ClinicalTrials.gov), Helios Clinical Research (ClinicalTrials.gov) and Helios CR Inc./RadNet (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 .