Dr. Targan completed his undergraduate and medical school training at Johns Hopkins University, followed by internal medicine residency and fellowships in Infectious Diseases (ID), Gastroenterology (GI), and Immunology within the UCLA School of Medicine system.

Throughout his entire career, Dr. Targan has been dedicated to caring for patients with Inflammatory Bowel Disease (IBD) and conducting basic, translational, and clinical research to enhance our understanding of IBD for improved patient care.

In the early stages of his career, he was appointed Chairman of the Crohn’s and Colitis Foundation of America National Scientific Advisory Committee and served as Chairman of the NIDDK GMA-2 Study Section.

Currently, Dr. Targan holds the position of Distinguished Professor of Medicine at Cedars Sinai and serves as the Executive Director of the F. Widjaja IBD Institute.

He has played a crucial role in the founding and governance of three companies—Prometheus Laboratory Inc., Santarus Inc., and Prometheus Biosciences. These companies were established to pioneer the discovery, development, and coordination of innovative diagnostics and therapeutics. The primary objective is to unravel the complexities of clinical and underlying mechanisms associated with various forms of IBD, ultimately defining optimal methods of care for each.