Ruchi Mathur, MD, FRCP(C) is Director of the Diabetes Program in the Division of Endocrinology, Diabetes and Metabolism and an endocrinologist at the Weight Loss Center, at Cedars-Sinai. Her primary clinical and research interests include the effects of gastrointestinal microbiota on metabolic diseases such as obesity and diabetes. Dr. Mathur has also performed research in polycystic ovary syndrome and clinically phenotyping this disorder.

Dr. Mathur has written many articles in peer-reviewed publications, including the Journal of Clinical Endocrinology and Metabolism, Digestive Disease Sciences, Journal of Hormone Research and Diabetes Care. In addition to her published research articles, Dr Mathur has co-authored the textbook Davidson's Diabetes Mellitus: Diagnosis and Treatment and contributed chapters in Hacker and Moore's Essentials of Obstetrics and Gynecology 5th Edition and D'Saia' s Obstetrics and Gynecology Women's Health Review. Dr. Mathur served as an editor of Webster's New World Medical Dictionary, 3rd edition.

Dr. Mathur is a fellow of the Royal College of Physicians and Surgeons of Canada and belongs to a number of academic societies including the American College of Physicians, American Association of Clinical Endocrinologists, Androgen Excess Society, American Diabetes Association, Endocrine Society, and Women in Endocrinology.

Dr. Mathur earned her medical degree from the University of Manitoba, Canada. She completed an internal medicine residency at the Health Sciences Center at the University of Manitoba. She fulfilled a clinical endocrinology and metabolism fellowship at Cedars-Sinai Medical Center, followed by a NIH/NRSA awarded research year at Cedars-Sinai. Her past awards include being named by the Consumers Research council as "One of America's Top Physicians". She has also received the American Registry's Patient Choice Award in 2008, 2009, 2010 and 2011.