UCI Health will see you now: Welcome to our new co-workers and patients from Fountain Valley, Lakewood, Los Alamitos and Placentia Linda! 

Dr. Ninh Nguyen, UCI Health specialist in gastrointestinal surgery

Ninh T. Nguyen, MD


General Surgery

Clinical Interests

laparoscopic antireflux surgery, laparoscopic esophagectomy, laparoscopic gastrectomy, laparoscopic gastric bypass, laparoscopic Heller myotomy, laparoscopic gastric banding, laparoscopic Roux-en-Y gastric bypass, laparoscopic hiatal hernia repair

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Medical School
University of Texas - San Antonio
Mount Sinai Hospital of Greater MiamiGeneral Surgery
Mount Sinai Hospital of Greater MiamiGeneral Surgery
University of Pittsburgh School of MedicineSurgical Oncology
University of Pittsburgh School of MedicineLaparoscopy
Professional Positions
  • John E. Connolly professor and Chair — Department of Surgery, UCI School of Medicine
  • Chief — Division of Gastrointestinal Surgery
  • Associate Director — UCI Health Digestive Health Institute
  • Past president — American Society for Metabolic and Bariatric Surgery
Awards and Recognition
  • Physicians of Excellence, Orange County Medical Association — 2013-2018, 2020-2023
  • 2019 Outstanding Achievement Award — American Society for Metabolic and Bariatric Surgery (ASMBS)
  • Best Doctors in America® (Surgery) — 2011-2013
  • America's Top Doctors (Gastrointestinal Cancer, Laparoscopic Surgery, Obesity/Bariatric Surgery), Castle Connolly Medical Ltd. — 2013
  • Golden Scope Award, Society of American Gastrointestinal & Endoscopic Surgeons (SAGES) — 2002
More Information

Dr. Ninh T. Nguyen is a board-certified UCI Health surgeon who specializes in minimally invasive gastroesophageal surgery and bariatric surgery. He pioneered the development of laparoscopic esophagectomy and gastrectomy for the treatment of esophagogastric pathology and laparoscopic Roux-en-Y gastric bypass for the treatment of morbid obesity.

Nguyen earned his medical degree at the University of Texas Health Science Center at San Antonio, Tex. He completed a residency in general surgery at Mount Sinai Medical Center, Miami Beach, Fla, followed by fellowships in surgical oncology and minimally invasive surgery at the University of Pittsburgh Medical Center.

Nguyen is the John E. Connolly professor and chair of the UCI School of Medicine's Department of Surgery and chief of its Division of Gastrointestinal Surgery. He is also co-director of the minimally invasive surgery fellowship and associate director of the UCI Health H.H. Chao Comprehensive Digestive Disease Center.

He was honored with the 2019 Outstanding Achievement Award by the American Society for Metabolic and Bariatric Surgery (ASMBS), of which he is an active member. He is also a member of the American College of Surgeons, the Association for Academic Surgery, the Society for Surgery of the Alimentary Tract, the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) and the American Surgical Association. In 2002, he received the Golden Scope Young Researcher Award from SAGES, in recognition of significant contribution to research in laparoscopic surgery.

He is also past president of the ASMBS and served as the ASMBS representative on the Gastrointestinal Surgery Advisory Council for the American Board of Surgery. He is a former president of the North American Chapter of the International Federation for the Surgery of Obesity and has served on the editorial boards of the Journal of the American College of Surgeons, Surgical Endoscopy and Annals of Surgery. He has been the principal investigator on numerous research grants and has published more than 250 peer-reviewed articles and book chapters.

Nguyen sees patients at UCI Health — Irvine and Orange.

UCI Health Chao Family Comprehensive Digestive Disease Center
101 The City Drive South, Building 22C
Orange, CA 92868
Phone: 888-717-4463
Fax: 855-813-0240
UCI Health — Irvine
19200 Jamboree Road
Irvine, CA 92612
Phone: 714-456-7002