Triwest Research Associates

Center Information

Hakim Mohamed, DBA, MBA
Triwest Research Associates
300 S. Pierce Street # 201
El Cajon, CA 92020
P. 619-334-4735 Cell. 619-861-5314

Video Presentations

Currently Enrolling Trials

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Therapeutic Areas

Cardiology/Vascular Diseases
Internal Medicine
Orthopedics/Orthopedic Surgery


TriWest Research Associates’ “TWRA” mission is to provide a comprehensive set of services to aid in the process of bringing new and effective treatments to the market, through Phase II, III, and IV clinical trials.

Our team -- led by Principal Investigators Louis J. Levy, Jr., M.D., Arthur Mabaquiao, M.D, Chief Executive Officer Hakim Mohamed, DBA, MBA, and Director of Business Development Brian Norton -- has a collective history of more than 30 years of experience in a clinical practice as well as clinical research. Located near Grossmont Hospital in La Mesa, TWRA provides our patients with convenient access to a state-of-the-art medical facility where they receive excellent care throughout their study participation. Our CROs and Sponsors find a wide breadth of services in a spirit of dedication to our San Diego location. Most importantly, they find compassionate care for our patients and subjects. We pride ourselves on delivering quality data and rapid patient enrollment to our Sponsors and CROs.

TWRA has a strong network represented by our Principal Investigator and Sub-Investigators. This breadth of expertise, combined with high levels of experience in applying quality standards, enables TWRA to be an effective resource to Sponsor organizations in promoting the scientific process.

From our Site Directors to our Clinical Research Coordinators, we are committed to high-quality data collection, a comfortable patient experience, and ensuring open and swift communication. Quality, Speed and Integrity defines the culture and motivation of every employee.

Thank you for your interest in TWRA. We look forward to supporting your projects.
- Hakim Mohamed, MBA- CEO.


TWRA is experienced in the following indications:


  • Lupus
  • Osteoporosis
  • Osteoarthritis
  • Psoriatic Arthritis
  • Rheumatoid Arthritis
  • Arthritis
  • Low Back Pain
  • Knee and Hip Pain
  • Gout
  • Fibromyalgia
  • Joint Pain
  • Post-Surgery
  • Frozen Shoulder


  • Cardio Vascular Disease
  • Congestive Heart Failure
  • Cardiac Fibrillation
  • Coronary artery disease
  • Ischemic heart disease
  • Hypercholesterolemia


  • Constipation, Diarrhea
  • Opioid Induced
  • Irritable Bowel Syndrome
  • Bowel Cleansing
  • Colonoscopy

Internal Medicine:

  • Diabetes
  • High Blood Pressure
  • High Cholesterol
  • Hypertension
  • Influenza


  • Diabetes Peripheral Neuropathy (DPN)
  • Alzheimer’s disease
  • Epilepsy
  • Migraine


Staff: (Certified in GCP, NIH, HIPAA and IATA training)

  • 5 Principal Investigators
  • 3 Sub-Investigators
  • 1 Pharmacist
  • 6 Study Coordinators
  • 1 Regulatory Manager
  • 1 Data Entry Specialist
  • 1 X-Ray Tech
  • 1 Infusion Nurse

Equipments: (Calibrated)

  • Weight Scales
  • Height Scales
  • Sphygmomanometer
  • 12 Lead ECG
  • Centrifuges (Ambien and Refrigerated)
  • 2 Refrigerators
  • -20C and -80C freezers
  • Min/Max thermometer in IP storage area, Refrigerators and Freezers
  • Access to international phone, fax line, copier and Scanner
  • Access to dry ice
  • X-Ray Machine


  • 2 locked with limited access drug rooms
  • More than 10 exam Rooms
  • 3 Monitor Rooms (equipped with phone/Internet)
  • Study Coordinators work space
  • Large waiting room


  • All eDC forms
  • IVRs and eIVRS
  • Dairy and eDairy


  • Quest Laboratory (local Lab)
  • Sharp Laboratory (Local Lab)
  • Alvarado Hospitals
  • San Diego Imaging Center
  • Euclid Endoscopy Center
  • Cabrillo Infusion Center (within the site)
  • Local and Central IRB

Patient Demographic:

  • Adult Male 50% (all ages)
  • Adult Female 50% (all ages)


  • All races (Caucasian, African/American, Hispanic, Asian, mix)


  • English
  • Spanish



  • Louis Levy, MD – Orthopedic Surgeon
  • Arthur Mabaquiao, MD – Internal Medicine and Rheumatology
  • Suhail Zavaro, MD – Cardiology
  • Donald Lipkis, MD – Gastroenterology
  • Ahmad Mohammad, MD - Neurologist
    • Other

      If you are interested in contacting this center to discuss placing a clinical trial there, please complete and send the e-mail form below. A representative from the research center will then follow up with you.

      Contact Center

      If you are interested in contacting this center to discuss clinical trials, please complete and send the email form below. A representative from the research center will then follow up with you.