Marvin Singh, M.D is an Integrative Gastroenterologist in San Diego, California, and a Member of the Board and Diplomate of the American Board of Integrative Medicine. He is also trained and board certified in Internal Medicine and Gastroenterology/Hepatology. A graduate of Virginia Commonwealth University School of Medicine, Singh completed his residency training in Internal Medicine at the University of Michigan Health System followed by fellowship training in Gastroenterology at Scripps Clinic Torrey Pines. Singh was trained by Andrew Weil, M.D., a pioneer in the field of integrative medicine, at the Andrew Weil Center for Integrative Medicine.

Singh is currently the Director of Integrative Gastroenterology at the Susan Samueli Integrative Health Institute at UC Irvine. He is also currently a voluntary Assistant Clinical Professor at UCSD in the Department of Family Medicine and Public Health; prior to this, he has been a Clinical Assistant Professor at UCLA and an Assistant Professor of Medicine at Johns Hopkins University. Singh is a member of the American Academy of Anti-Aging Medicine, American College of Lifestyle Medicine, and many other societies. He is actively involved in the American Gastroenterological Association. He is one of the editors of the textbook of Integrative Gastroenterology, 2nd edition (a Weil Series text) and has written several book chapters and articles.

He is dedicated to guiding his clients toward optimal wellness every step of the way, using the most cutting edge technologies to design highly personalized precision based protocols and help them stay on top of their health, rather than underneath disease. Towards this end, he founded Precisione Clinic, to bring the best in preventive medicine to his clients.

Dr. Hadar Lev-Tov is a board-certified dermatologist with extensive research experience. Throughout his training and in daily practice, he has always believed that the key to achieving health for his patients is grounded in his ability to truly connect to their experiences and perceptions of health and well-being. Maimonides, one of the greatest philosophers of all time realized that human knowledge, often represented as "science," is limited. As a physician, he feels he would be a fool to believe all is known. Maimonides said, "The physician should not treat the disease but the patient who is suffering from it." LearnSkin is his journey to a better understanding of his patients.