#1California Retina Consultants
Based in El Rio, CA
Clinical Research Sites in Ventura County, CA
The top-ranked clinical research sites serving Ventura County, CA are California Retina Consultants, California Retina Consultants (Oxnard) and Cardiology Associates Medical Group. We list 394 clinical research sites serving Ventura County, 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 Ventura County, CA. 394 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 Ventura County
#2California Retina Consultants (Oxnard)
Based in El Rio, CA#3Cardiology Associates Medical Group
Based in San Buenaventura (Ventura), CA#4Cardiovascular Institute of Los Robles Health System
Based in Thousand Oaks, CA#5Care Access Research
Based in Thousand Oaks, CA#6Care Access - Thousand Oaks
Based in Thousand Oaks, CA#7Carey Chronis MD Pediatric, Infant and Adolescent Medicine
Based in Oxnard, CA#8City of Hope at Simi Valley
Based in Simi Valley, CA#9Clinical Trials Management Services, LLC
Based in Thousand Oaks, CA#10Clinical Trials Management Services-Site Number: 8400047
Based in Thousand Oaks, CA
20 more providers serving this area
- Clinical Trials Research Institute, Thousand Oaks, CA
- Clinica mi Salud by Focil Med, Oxnard, CA
- Cohen Medical Centers, Thousand Oaks, CA
- Community Memorial Hospital, San Buenaventura (Ventura), CA
- Cura Clinical Research, Oxnard, CA
- Cura Clinical Research - Oxnard, Oxnard, CA
- Cura Clinical Research - Oxnard- Site Number : 8401142, Oxnard, CA
- FOMAT - Clinicas Mi Salud, Oxnard, CA
- Fomat Medical Research, Oxnard, CA
- Los Robles Hospital & Medical Center, Thousand Oaks, CA
- Los Robles Medical Center, Thousand Oaks, CA
- Los Robles Regional Medical Center, Thousand Oaks, CA
- Millennium Clinical Trials, Lake Sherwood, CA
- OM Research, El Rio, CA
- Om Research, LLC 2, Oxnard, CA
- Om Research, LLC - Oxnard-Site Number: 8400150, Oxnard, CA
- Pain Management and Injury Relief, Thousand Oaks, CA
- Rolling Oaks Radiology -Palms, El Rio, CA
- SCLA Management - Pain Management and Injury Relief, Thousand Oaks, CA
- St. John's Regional Medical Center, Oxnard, CA
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Frequently asked questions
How many clinical research sites serve Ventura County?
We list 394 clinical research sites serving Ventura County, CA: 40 based there and 354 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 Ventura County?
The top-ranked clinical research sites serving Ventura County, CA are California Retina Consultants, California Retina Consultants (Oxnard), Cardiology Associates Medical Group, Cardiovascular Institute of Los Robles Health System and Care Access Research. The full ranked list, with the official records each provider matched, is on this page.
Which clinical research sites serving Ventura County are verified against official records?
10 of the top 10 match an active official record: California Retina Consultants (ClinicalTrials.gov), California Retina Consultants (Oxnard) (ClinicalTrials.gov), Cardiology Associates Medical Group (ClinicalTrials.gov), Cardiovascular Institute of Los Robles Health System (ClinicalTrials.gov) and Care Access Research (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 Ventura County
Communities served
Moorpark, Santa Paula, Port Hueneme, Fillmore, Oak Park, Ojai, El Rio, Mira Monte, Oak View, Meiners Oaks, Santa Rosa Valley, Casa Conejo, Channel Islands Beach, Piru, Bell Canyon, Lake Sherwood, Somis, Santa Susana, Saticoy, Nyeland Acres, North Ventura Avenue