Our Team

One of the primary benefits of an academic medical center is the team approach to clinical care. The gastrointestinal cancer team at UC San Diego Moores Cancer Center includes gastroenterologists, medical oncologists, and GI surgery experts who have specialized expertise and experience treating cancers of the digestive tract. Their concentrated focus provides you with the latest and most comprehensive information and advances in the field.

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Michael Bouvet, MD

Michael Bouvet, MD, Surgical Oncology

Dr. Bouvet specializes in surgical oncology and endocrine surgery. He performs surgeries for tumors of the pancreas, thyroid, liver, esophagus, and stomach, as well as for other conditions. He has performed many whipple procedures for pancreatic cancer. In his recent medical publications, he has reported on new techniques for imaging pancreatic cancer and for understanding its causes and the factors that influence its growth.

Paul Fanta, MD

Paul Fanta, MD, Medical Oncology

The diagnosis and management of gastrointestinal cancers has dramatically changed in the past several years. By incorporating biotechnology, bioinformatics, molecular analyses, pharmocogenomic data, in the setting of prospective clinical trials, we may better indentify patients who will benefit from chemotherapy, avoiding toxicities from treatment, and develop a predictive therapeutic strategy unique to a patient's disease.

Alan Hemming, MD

Alan Hemming, MD, Liver & Bile Duct Surgery, Liver Transplantation

Dr. Hemming specializes in open and laparoscopic liver and bile duct surgery for malignancy. He has performed over 900 liver resections and has a particular interest in dealing with complex cases of liver and bile duct malignancy. Dr. Hemming is also Professor & Chief of Abdominal Transplantation & Hepatobiliary Surgery and offers liver transplantation as an option for selected liver malignancies. He performs surgery on the liver, bile ducts, and pancreas.

Santiago Horgan, MD

Santiago Horgan, MD, Esophageal Surgery, Minimally Invasive Surgery

Dr. Horgan was among the first surgeons trained to perform the Lap-Band Adjustable Gastric Banding System procedure used for the treatment of obesity. As the director of UCSD’s Center for the Treatment of Obesity, he has performed more than 1,000 Lap-Band procedures and instructs other surgeons in the Lap-Band and Realize Band techniques throughout the United States.

Ajai Khanna, MD

Ajai Khanna, MD, Abdominal Organ Transplantation

Dr. Khanna is currently involved in studying liver regeneration following laparoscopic liver resections. Dr Khanna's clinical practice focuses on surgical management of hepatobilary malignancies, with special expertise in the role of liver transplantation for liver tumors. Dr. Khanna also performs live donor liver transplants for patients with operable liver cancers.

Joshua David Lawson, MD

Joshua David Lawson, MD, Radiation Oncology

Dr. Lawson is the author of multiple research articles focusing primarily on the use of novel radiotherapy technologies including intensity-modulated radiotherapy (IMRT), image-guided radiotherapy (IGRT), and dynamic adaptive radiotherapy (DART). He will continue his research in these areas as a member of the Department of Radiation Oncology's Center for Advanced Radiotherapy Technologies (CART).

Andrew M. Lowy, MD, F.A.C.S.

Andrew M. Lowy, MD, F.A.C.S., Surgical Oncology, Minimally Invasive Surgery

Dr. Lowy is a surgical oncologist with a primary interest in cancers of the pancreas, liver and GI tract. He has a specialty interest in the management of patients with metastatic disease to the liver and peritoneum. Dr. Lowy performs heated intraperitoneal chemotherapy (HIPEC), a procedure unique to only a few top cancer centers in the United States.

Elisabeth C. McLemore, MD

Elisabeth C. McLemore, MD, Surgery, Colon and Rectal, Minimally Invasive, Surgical Oncology, Cancer - Gastrointestinal

Dr. McLemore’s area of expertise includes minimally invasive procedures for inflammatory bowel disease (Crohn’s disease and ulcerative colitis), diverticulitis, colon cancer, and rectal cancer. She enjoys participating in surgical education and mentorship. Her research interests include cancer of the colon, rectum, and anus, and inflammatory bowel disease. One of her goals is to foster the development of a center of expertise in the medical and surgical management of inflammatory bowel disease at UCSD. Dr. McLemore has authored a number of papers and chapters in gastrointestinal surgery.

Sonia Ramamoorthy, MD

Sonia Ramamoorthy, MD, Colorectal Surgery, Minimally Invasive Surgery

Dr. Ramamoorthy performs open and minimally invasive colorectal surgeries as well as all standard general surgery procedures. She has advanced training in colon and rectal surgery and has special certification in minimally invasive surgical techniques to treat cancers as well as other conditions in the colon, rectum, and anus. Dr. Ramamoorthy is part of the Translational Oncology Program at the Moores UCSD Cancer Center, where her ongoing research focuses on developing techniques for determining a patient’s risk of cancer recurrence after surgery for early rectal cancer.

Tony Reid, MD, Ph.D.

Tony Reid, MD, Ph.D., Medical Oncology

Dr. Reid’s broad career goal is to develop new therapeutic approaches for the treatment of cancer, primarily gastrointestinal malignancies including colorectal cancer, pancreatic cancer, esophageal cancer and hepatobillary cancer. He has been at the forefront of using interventional radiology to selectively deliver therapeutics directly to the tumor using the tumor's own vascular supply. Dr. Reid leads the Clinical Research unit at UCSD and has pioneered the use of gene therapy and viral vectors to selectively kill tumor cells and enhance the immune response to the cancer.

Thomas John Savides, MD

Thomas John Savides, MD, Gastroenterology

Dr. Savides is a nationally recognized expert in endoscopic ultrasound (EUS) and therapeutic endoscopy (ERCP, double balloon enteroscopy). He founded and is the director of the UCSD EUS program, which is now one of the premier programs in the United States for diagnosis and staging of GI, pancreatic, and lung cancer. He is a community referral specialist for advanced pancreatico-biliary endoscopic procedures (ERCP), GI oncology, Barrett's esophagus, GI bleeding, and difficult polyp removal.

Kelly A. Shimabukuro, MD

Kelly A. Shimabukuro, MD, Cancer - Gastrointestinal

Jason Sicklick, MD

Jason Sicklick, MD, Surgical Oncology (Hepatopancreatobiliary Surgery)

Dr. Sicklick is a surgical oncologist with board certification in general surgery. His expertise include treating benign and malignant diseases of the liver, bile ducts, gallbladder, and pancreas, as well as other gastrointestinal cancers and sarcomas. He joined the Division of Surgical Oncology at Moores Cancer Center in 2010 after completing a fellowship in surgical oncology with a focus upon hepatopancreatobiliary surgery at Memorial Sloan-Kettering Cancer Center where he was the Chief Administrative Fellow.

Claude Sirlin, MD

Claude Sirlin, MD, Diagnostic Imaging

Dr. Sirlin is head of the Liver Imaging Research Group, which was formed to develop new techniques (pulse sequences, protocols, and post-processing methods) for liver imaging. The Group actively collaborates with hepatologists, liver surgeons, pathologists, and biostatisticians in the study of liver cancer and diffuse liver disease (fibrosis, fat, and inflammation). They have developed a non-invasive procedure that can detect the smallest of liver tumors.

Mark Talamini, MD

Mark Talamini, MD, Surgical Oncology, Minimally Invasive Surgery, Colorectal Surgery

Dr. Talamini, Professor and Chairman of the Department of Surgery, is a pioneer in minimally invasive abdominal surgery. He has an active oncologic surgical practice focusing on colorectal, pancreatic, and gastric surgery.

Catheryn M. Yashar, MD

Catheryn M. Yashar, MD, Radiation Oncology

Dr. Yashar is the chief of the GI Tumor Service in the Department of Radiation Oncology. She has considerable expertise in a wide variety of radiotherapy techniques used in GI cancer patients, including 3DCRT and IMRT.

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