• Bariatric Surgery Services
• Gastrointestinal Cancer Services
• Digestive Disease Services
• Esophageal Disease Services
• Surgical Oncology Services
• Cancer Services
• Surgery Services
• Minimally Invasive Surgery Services
• Robotic Oncology Services

• American Board of Surgery, Surgery

• English
• Vietnamese

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

• 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

• 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

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.

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