List of Contract Research Organizations in California (2025)

California is home to many academic institutions and specialized research centers. Many contract research organizations in California conduct clinical trials and observational studies, majorly in discovering new therapies, and translational research.

The University of California (UC) system conduct over 4600 clinical trials in its six academic health centers. Other institution such as Kaiser Permanente’s Department of Research & Evaluation conduct trials. Many private CROs such as Velocity Clinical Research, Flourish Research, M3 Wake Research, FOMAT Medical Research, CenExel have multiple locatiosn for clinical trials.

California is a top-tier life sciences hub in the US, with large number of pharmaceutical, biotech and medical device companies.

Contract Research Organizations in California

310 Clinical Research

575 East Hardy ST #104
Inglewood, CA, 90301

Tel: 310-878-2636
https://310clinicalresearch.com

Abzena

Blvd.
San Diego,
CA 92121
USA

2858 Loker Ave E. Suite 100
Carlsbad,
CA 92010
USA

11425 Sorrento Valley Rd.
San Diego,
CA 92121
USA

Tel: +1 858-550-4094
https://abzena.com

Accellacare

Asclepes Research Centers- Long Beach
4300 Long Beach Boulevard – Suite 500,
Long Beach, CA, 90807

Tel: +1 (562) 492 9966
Fax: +1 (562) 492 9892
Web: https://www.accellacare.com

Accelsiors CRO

655 N Central Avenue,
Suite 1760, Glendale CA 91203
USA

Web: https://accelsiors.com/

Ace Research Institute

15600 Devonshire St #202,
Granada Hills, CA 91344

Tel: 818-938-9167
Email: J.Orellana@AceResearchInstitute.com
https://www.aceresearchinstitute.com/

Advanced Research Center, Inc.

1020 S. Anaheim Blvd Ste. 316,
Anaheim, CA 92805

Phone: (714) 999-6688
Fax: (714) 908-1555
Email: contact@arctrials.com
https://www.arctrials.com/

Alimentiv (US) Inc.

10581 Roselle Street
Suite 110
San Diego, California
USA 92121

Web: https://alimentiv.com

Alliance Research Institute

22110 Roscoe Blvd., Suite 202
Canoga Park, CA 91304
Phone: (818) 835-9085

7218 Garfield Ave,
Bell Gardens, CA 90201

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3737 Martin Luther King Jr. Blvd.,
Suite 333 Lynwood, CA 90262

Phone: (562) 396-1223
Fax: (747) 444 – 2392
Email: info@allianceri.org
Phone: (818) 835-9085

Altasciences LA

5630 W Cerritos Ave,
Cypress, CA 90630

Tel: 1 866-461-2526
https://participantsla.altasciences.com/

Amador Bioscience

HQ: 7133 Koll Center Pkwy, Pleasanton,
CA 94566, United States

Web: https://www.amadorbioscience.com

America Clinical Trials

18372 Clark St., Suite 212
Tarzana, CA 91356

Tel: 1(818) 708-0339
Email: info@americaclinicaltrials.com
https://www.americaclinicaltrials.com

American Institute of Research

1127 Wilshire Blvd., Suite 1001
Los Angeles, CA 90017

Phone: 213-905-6616
https://americaninstituteofresearch.com

Ark Clinical Research

2220 Clark Ave Unit A
Long Beach, CA 90815
Tel: (562) 997-1000

11180 Warner Ave. Suite #269
Fountain Valley, CA. 92708
Tel: (714) 988-2021

Email: info@arkclinicalresearch.com
https://arkclinicalresearch.com/

Arroyo Research, Inc

1502 South 7th Street
Alhambra, CA 91803
USA

Phone: (240) 408-4024, (714) 782-7105
Email: contact@arroyoresearch.com
https://arroyoresearch.com/

Artemis Institute for Clinical Research (a Headlands Research Site)

Corporate Office
770 Washington St, Ste 200
San Diego, CA 92103
Tel: 858-278-3647
Fax: 619-629-0512

San Diego Location
770 Washington Street, Suite 300
San Diego, CA 92103
Tel: 858-278-3647
Fax: 858-278-3660
Patient Recruitment: (1-855-367-8834)

Riverside Location
11748 Magnolia Ave, Suite D
Riverside, CA 92503
Tel: 951-374-1190
Fax: 951-374-7245
Patient Recruitment: (1-855-367-8834)

Web: https://artemis-research.com/

Ascada Research

1440 N Harbor Blvd Suite 305B & 311,
Fullerton, CA 92835, United States

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Tel: (657) 214-3679
Email: info@ascadaresearch.org
https://www.ascadaresearch.org/

Asclepes Research

14860 Roscoe Blvd – Suite 304
Panorama City, CA 91402

Phone: (747) 998-0394
Fax: (747) 998-0383
Email: Research@asclepes.com
https://asclepes.com/