Dr. Sergey Lyass, as a Board certified in General Surgery professional, is specialized in performing a wide range of surgeries, with a special interest in the procedures concerning the abdomen and related organs and structures. Dr. Lyass is trained to practice Bariatric Surgery and minimally-invasive surgical techniques, contributing to the reduction of patient’s recovery time and stress. Dr. Lyass is a member of multiple honorable professional organizations such as the Society of the American Gastrointestinal Endoscopic Surgeons (SAGES), the American Society of Metabolic and Bariatric Surgery (ASMBS) and the American College of Surgeons. He has authored more than 100 papers in peer reviewed journals and presentations on Bariatric and Laparoscopic Surgery. Dr. Lyass is specialized in performing Laparoscopic Gastric Banding, Laparoscopic Sleeve Gastrectomy, Laparoscopic Gastric Bypass, and Revisional Surgery for previously failed weight loss procedures.

Procedures Dr. Sergey Lyass Performs at Marina del Rey Hospital

Insurance Accepted

  • Aetna
  • Blue Cross / Blue Shield
  • Cigna
  • Coventry Health Care
  • HealthNet
  • Humana
  • United Healthcare
  • WellPoint

Languages Spoken

  • English
  • Hebrew
  • Russian

Education & Training

Medical Degree

Moscow II State Medical School

Internship(s)

Institute of Cardio-Vascular Surgery n.a. Bakulev, Moscow

Mount Sinai Medical Center

Residency(ies)

Hebrew University-Hadassah Medical Center in Jerusalem, Israel - General Surgery

Mount Sinai School of Medicine - General Surgery

Fellowship(s)

Cedars-Sinai Medical Center, Los Angeles - Minimally Invasive and Bariatric Surgery



Honors & Awards

Memberships & Affiliations

  • American College of Surgeons American College of Surgeons
  • American Society of Metabolic and Bariatric Surgeons American Society of Metabolic and Bariatric Surgeons
  • Society of American Gastrointestinal and Endoscopic Surgeons Society of American Gastrointestinal and Endoscopic Surgeons
  • Publications & Media