Dr. Paya obtained his medical degree from Mount Sinai School of Medicine in New York. He then received his surgical training from University of California, Irvine. He underwent a subspecialty in laparoscopic bariatric surgery training where he learned for an entire year how to perform bariatric surgery. Obesity is a complex, chronic disease. Many factors contribute to it. Dr. Paya has performed hundreds of laparoscopic operations. His expertise is to perform laparoscopic Roux-en-Y gastric bypass and laparoscopic gastric banding for those struggling with obesity. Dr. Paya has formulated a multi-disciplinary approach to obesity surgery which include a bariatric surgeon, anesthesiologist, nutritionist, psychologist, exercise facility and exercise trainer. An entire team will help the patient in every aspect of their new challenge. All operations are performed in hospital setting. After surgery patients join the fitness and rehabilitation course to maximize and maintain their weight loss. Dr. Paya has operated on patients all around the United States. He has written multiple chapters in books such as EDUCATIONAL REVIEW IN GENERAL SURGERY and PROBLEMS IN GENERAL SURGERY. Dr. Paya has given lectures all over United States on bariatric surgery. He is a Diplomat of American College of Surgeons and Board Certified in General Surgery. He is a member of American Society of American Gastrointestinal Endoscopic Surgeons, American Society of Bariatric Surgery and American College of Surgeons. Dr. Paya has created multiple videos on bariatric surgery, on different techniques and maneuvers for other bariatric surgeons to learn and use.
Sergey Lyass, MD, is a general, laparoscopic and bariatric surgeon at the Center for Weight Loss at Cedars-Sinai Medical Center. Board certified in general surgery, Dr. Lyass is a member of several professional organizations including the American College of Surgeons, American Society of Metabolic and Bariatric Surgery (ASMBS), Society of the American Gastrointestinal Endoscopic Surgeons (SAGES) and Society of Laparoendoscopic Surgeons. He is the author of more than 100 papers and presentations on laparoscopic and bariatric surgery.
Dr. Lyass is committed to the advancement of laparoscopic bariatric surgery techniques and the exceptional treatment of the bariatric population.
Dr. Lyass received his medical degree from the Moscow II State Medical School (formerly known as Moscow Medical University). He completed an internship at the Institute of Cardio-Vascular Surgery n.a. Bakulev, in Moscow. He studied as a junior surgical resident in the Department of Surgery at the Hebrew University-Hadassah Medical Center in Jerusalem, and then followed up with a senior residency in the Department of Surgery at Mount Sinai Medical Center in New York. Before returning to Cedars-Sinai to be senior surgical resident and then chief surgical resident in the Department of Surgery, Dr. Lyass performed as senior and chief resident at the Department of Surgery at Hadassah Hebrew University Medical Center. Following his extended residency training, Dr. Lyass completed a clinical fellowship as well as a research fellowship in minimally invasive and bariatric surgery at Cedars-Sinai's Department of Surgery
Dr. Lyass is fluent in Russian and Hebrew.