#1Cardiovascular Institute of Los Robles Health System
Serves this area from Thousand Oaks, CA (1 mi)
Clinical Research Sites in Thousand Oaks, CA
The top-ranked clinical research sites serving Thousand Oaks, CA are Cardiovascular Institute of Los Robles Health System, Care Access Research and Care Access - Thousand Oaks. We list 637 clinical research sites serving Thousand Oaks, 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 Thousand Oaks, CA (Ventura County). 637 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 Thousand Oaks
#2Care Access Research
Serves this area from Thousand Oaks, CA (1 mi)#3Care Access - Thousand Oaks
Serves this area from Thousand Oaks, CA (1 mi)#4Clinical Trials Management Services, LLC
Serves this area from Thousand Oaks, CA (1 mi)#5Clinical Trials Management Services-Site Number: 8400047
Serves this area from Thousand Oaks, CA (1 mi)#6Cohen Medical Centers
Serves this area from Thousand Oaks, CA (1 mi)#7Los Robles Hospital & Medical Center
Serves this area from Thousand Oaks, CA (1 mi)#8Los Robles Medical Center
Serves this area from Thousand Oaks, CA (1 mi)#9Los Robles Regional Medical Center
Serves this area from Thousand Oaks, CA (1 mi)#10The Cohen Medical Centers
Serves this area from Thousand Oaks, CA (1 mi)
20 more providers serving this area
- UCLA Thousand Oaks Primary & Specialty Care, Thousand Oaks, CA (1 mi)
- Millennium Clinical Trials, Lake Sherwood, CA (4 mi)
- UCLA Hematology/Oncology - Westlake, Lake Sherwood, CA (4 mi)
- University of California Los Angeles - Jonsson Comprehensive Cancer Center,1250 La Venta Dr, Suite 100, Lake Sherwood, CA (4 mi)
- Clinical Trials Research Institute, Thousand Oaks, CA (4 mi)
- Pain Management and Injury Relief, Thousand Oaks, CA (4 mi)
- SCLA Management - Pain Management and Injury Relief, Thousand Oaks, CA (4 mi)
- City of Hope at Simi Valley, Simi Valley, CA (8 mi)
- UCLA Simi Valley Alamo Specialty Care, Simi Valley, CA (8 mi)
- Alliance Clinical West Hills (Focus Clinical Research), Los Angeles, CA (12 mi)
- Focus Clinical Research, Los Angeles, CA (12 mi)
- Interv Cardiology Med Grp, Los Angeles, CA (12 mi)
- Interventional Cardiology Medical Group, Los Angeles, CA (12 mi)
- Wellness Oncology and Hematology, Los Angeles, CA (12 mi)
- Alliance Research Institute, LLC, Los Angeles, CA (13 mi)
- Alliance Research Institute, LLC - Canoga Park, Los Angeles, CA (13 mi)
- Alliance Research Institute-Site Number: 8400008, Los Angeles, CA (13 mi)
- Institute of Neuro Innovation, Los Angeles, CA (13 mi)
- San Fernando Valley Health Institute, Los Angeles, CA (13 mi)
- Kaiser Permanente-Woodland Hills, Los Angeles, CA (15 mi)
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Frequently asked questions
How many clinical research sites serve Thousand Oaks?
We list 637 clinical research sites serving Thousand Oaks, CA: 0 based there and 637 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 Thousand Oaks?
The top-ranked clinical research sites serving Thousand Oaks, CA are Cardiovascular Institute of Los Robles Health System, Care Access Research, Care Access - Thousand Oaks, Clinical Trials Management Services, LLC and Clinical Trials Management Services-Site Number: 8400047. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Thousand Oaks are verified against official records?
10 of the top 10 match an active official record: Cardiovascular Institute of Los Robles Health System (ClinicalTrials.gov), Care Access Research (ClinicalTrials.gov), Care Access - Thousand Oaks (ClinicalTrials.gov), Clinical Trials Management Services, LLC (ClinicalTrials.gov) and Clinical Trials Management Services-Site Number: 8400047 (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 .