Join A Study

Our Team

Board-certified physicians and dedicated research professionals committed to advancing clinical research and delivering exceptional patient care at every visit.

Our Team

Board-certified physicians and dedicated research professionals committed to advancing clinical research and delivering exceptional patient care at every visit.

Meet Principal Investigators

David Rayhan

David Rayhan, MD

Dermatologist
Atopic Derm, Vitiligo, Hidradenitis Suppurativa (HS)
Marvel Clinical Research, California
Manuchehr Darani

Manuchehr Darani, MD

Gastroenterologist, Internal Medicine
Fatty Liver Disease, Crohn's, IBD/IBS
Marvel Clinical Research, California

Harsharandeep Sanghera, MD

Internal Medicine
Diabetes, Metabolic Disorders, Hypertension
Marvel Clinical Research, California

Gezelle Azar, MD

Psychiatry
Major Depressive Disorder (MDD), Anxiety Disorders, Neurodevelopmental & Disruptive Behavior Disorders
Marvel Clinical Research, California

Christos Tsimerekis, MD

Endocrinology, Internal Medicine
Diabetes, Thyroid Disorders, Obesity
Marvel Clinical Research, California