Andrea C. Pallares, NP

Dr. Ronald F. Wolf is a board-certified UCI Health surgical oncologist who specializes in treating liver, bile duct and pancreatic cancer. His clinical interests include pancreatic adenocarcinoma, colon and rectal cancers that have metastasized to the liver, surgical treatment for bile duct tumors and cysts, as well as surgery for soft tissue sarcoma. Wolf earned his medical degree from Oregon Health & Science University in Portland, followed by an internship and two residencies in general surgery at UC Davis. He then completed a fellowship in surgical oncology at Memorial Sloan Kettering Cancer Center in New York, where he also served as a clinical research fellow. Later, he helped direct surgical resident and fellowship-level postgraduate training programs in Portland, Ore. Wolf is a committee member of several national organizations involved in clinical trials, offering expanded treatment options for UCI Health patients.

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.