John Duffy, M.D.

John P. Duffy, M.D., is a Hepatobiliary and Abdominal Transplant Surgeon at the Nazih Zuhdi Transplant Institute at INTEGRIS Health Baptist Medical Center in Oklahoma City.

Dr. Duffy joined the NZTI team in 2010 and performs adult and pediatric liver transplant procedures, split liver transplants, and hepatobiliary – pancreatic surgery. He is also extensively trained in adult and pediatric intestinal and multivisceral transplantation. He joined the NZTI team after serving from 2008-2010 as Assistant Professor of Surgery for the Dumont – UCLA Center for Liver and Pancreas Transplantation in Los Angeles, California. There, he performed adult and pediatric liver transplants, and adult and pediatric intestinal and multivisceral transplants.

Dr. Duffy is a native Oklahoman. He was born in Oklahoma City and graduated from Putnam City North High School. He earned a B.A. in English from the University of Oklahoma with special distinction. He received his Doctor of Medicine degree with special distinction from the University of Oklahoma College of Medicine. He completed his residency training in general surgery from 1999-2006 at the University of California, Los Angeles (UCLA) Medical Center, and is certified by the American Board of Surgery. Dr. Duffy then trained in liver and multi-organ transplantation at UCLA from 2006-2008, under the guidance of Ronald W. Busuttil, M.D., Ph.D, and Douglas G. Farmer, M.D.

Interests include technical aspects of adult and pediatric liver transplantation, split liver transplantation, staging and treatment of hepatocellular carcinoma, and hepatobiliary-pancreatic surgery.

HBP procedures / Areas of Interest

Hepatic
• liver transplantation
• major liver resection
• laparoscopic liver surgery
- liver resection
- cyst management
• radiofrequency ablation of liver tumors
- hepatocellular carcinoma
- metastatic tumors
• surgical management of benign hepatic tumors
- adenoma
- hemangioma
- focal nodular hyperplasia
- cystic diseases of the liver, including echinococcal cysts
• surgical management of hepatic abscess
• surgical management of portal hypertension
- distal splenorenal shunting
- portacaval / mesocaval shunting
- rex shunt
- splenectomy for sinistral portal hypertension

Pancreatic
• major pancreatic resections
- pancreaticoduodenectomy (Whipple resection)
- distal pancreatectomy +/- splenectomy
- central pancreatectomy
• surgical management of acute pancreatitis
- debridement
- internal drainage of chronic pancreatic pseuocyst
- resection of chronic pancreatic pseudocyst
• surgical management of chronic pancreatitis
- pancreaticoduodenectomy (Whipple resection)
- longitudinal pancreaticojejunostomy (Peustow procedure)
• surgical management of ampullary problems
- local resection
- pancreaticoduodenectomy (Whipple resection)
- sphincteroplasty for pancreas divisum
• surgical management of annular pancreas
• surgical management of cystic disease of the pancreas
- serous cystic neoplasms
- mucinous cystic neoplasms
- ipmn
- pseudocysts

Biliary
• acute and chronic surgical management of bile duct injuries
• surgical management of cholangiocarcinoma (intrahepatic and extrahepatic)
- bile duct resection and reconstruction
- combined major hepatic resection, bile duct resection and reconstruction
- pancreaticoduodenectomy (Whipple resection)
- liver transplantation
• surgical management of gallbladder cancer
- radical cholecystectomy with portal lymphadenectomy
- major liver resection with bile duct resection and reconstruction
- pancreaticoduodenectomy (Whipple resection)
• surgical management of choledochal cysts
• surgical management of bile duct strictures
• surgical management of primary sclerosing cholangitis (liver transplantation)
• resection of biliary cystadenomas

Additional expertise:
• Surgical management of complex GI disease
- Crohn's disease
- intestinal obstruction
- enterocutaneous fistulae
- complex abdominal wall hernias
- Desmoid tumors
- GIST tumors
- Malignancies at the root of the mesentery (sarcomas)
• Surgical management of intestinal failure / short gut syndrome
• Surgical management of TPN associated cholestatic liver disease

Pediatric HBP disease
• surgical management of choledochal cysts
• surgical management of liver tumors, including hepatoblastoma
• liver transplantation
• split-liver transplantation