The Best Clinical Research Center in San Diego

TriWest Research Associates (TWRA) is a multi-specialty medical research center headquartered in San Diego, California. It is committed to supporting the biopharmaceutical and scientific research community by conducting high-quality clinical trials. We deliver reliable evaluation of pharmaceuticals and devices in a clinical environment; adhering to effective and ethical industry standards. We strive for scientific excellence in supporting novel drug development and contributing to global research solutions.

TriWest Research Associates (TWRA) was founded by Mr. Hakim Mohamed, Dr. Louis J. Levy, Jr., Dr. Arthur Mabaquiao and Mr. Brian Norton.


At TriWest Research Associates, our slogan is "Quality, Speed and Integrity defines the culture and motivation of every employee”, and we stand by that! We offer top of the line medical research trials in San Diego, with the goal of improving the quality of human life by finding solutions to various illnesses and maladies.

About TriWest Research Associates

TriWest Research Associates employs only the top medical minds in San Diego for our team of Investigators. We guarantee you will be treated with respect by our dedicated team in your research study. Each Investigator is highly trained and qualified to administer and oversee your medical trial.

The TriWest Research Team ›

Clinical Research Studies

We are dedicated to making the world a better place through our research trials. We offer clinical studies for those suffering from Osteoarthritis of the knee, Lupus, Gout, Fibromyalgia, Cardiovascular issues, Asthma, Migraines, the Flu and more. If you have an ailment, we can help.

Medical Research Trials › 



Our Founders

Prior to founding TriWest in 2009, Hakim held key positions with Synergy Clinical Research Center as Chief Financial Officer and Pacific Health Systems as Administrator & Privacy Officer. Prior to this, he held senior positions with Bayview Behavioral Campus, San Clemente Hospital and California Pacific Medical Center. He earned his MBA from National University, California.

Hakim holds certificates in several advanced courses including; Clinical Research Sites Administration, Certified Medical Compliance Officer and Site Operations and SOPs.

Louis J. Levy Jr., MD is Board Certified in Orthopedic Surgery and Internal Medicine and has more than 30 years of experience in knee and hip surgery.

Dr. Levy’s private practice co-exists in the same office suites as TWRA. This is a great advantage to the research pursuits as he is on-site and available to his research staff and patients alike. Sponsors and monitors appreciate our attitude and consistently return to us with follow-up studies.

Ray Mabaquiao is board certified in Internal Medicine and Rheumatology. He has been in private practice in the San Diego and El Cajon now for over ten years. He takes pride in his state of the art clinic work with intravenous and other injectable biologic therapies as well as musculoskeletal ultrasound examinations and guided injections.

His desire to practice "cutting edge" medicine and to further his field blends well with Triwest Research.

Prior to founding TriWest Research Associates in 2009, Mr. Norton founded ClinTrial Networks (CTN) in 2007.  With more than 15 years experience in the pharmaceutical industry, Brian has leveraged both his business and extensive clinical trial experience and created a network of dedicated research sites worldwide.  

Mr. Norton holds his Bachelors of Science (Honors) in Hospital Administration from Southern Illinois University. He also holds certificates in several advanced courses including Advanced Clinical Drug Monitoring and GCP/ICH.