Advanced Endoscopy and Pancreaticobiliary Surgery

The INTEGRIS Nazih Zuhdi Transplant Institute has a team of transplant surgeons ready to help you.

Areas of Expertise

  • Adult and pediatric liver transplants
  • Liver resection/ablation for cancer
  • Biliary tumors (benign and cancerous)
  • Complex biliary reconstruction/resection
  • Minimally invasive liver surgery
  • Integrated advanced therapeutic endoscopy and interventional radiology
  • Prevention, screening, diagnosis and staging of gastrointestinal cancer
  • Early diagnosis, staging and surgery for Whipple procedure and distal pancreatectomy
  • Diagnostic and therapeutic ERCP
  • General and interventional gastrointestinal endoscopy
  • Endoscopic ultrasonography
  • Capsule endoscopy

Team of Experts

Vivek Kohli, M.D., FACS

Kohli is the director of the abdominal organ transplant division. He is board certified in transplant surgery. He specializes in liver, kidney, pediatric, split liver and pancreas transplants. He also performs other complex surgeries for liver, pancreas and bile duct related problems including cancers related to these organs.

John Duffy, M.D.

Duffy is chief of pancreas and pediatric liver transplant. He is board certified in transplant surgery. His field of surgical expertise is adult and pediatric liver transplant procedures, split liver transplants, and hepatobiliary pancreatic surgery.

Lori Kautzman, M.D.

Kautzman is a board certified transplant surgeon. She specializes in liver, kidney, pancreas, and pediatric transplants. In addition, her other areas of expertise include hepatobiliary pancreatic surgeries and intestinal rehabilitation.

Abbas Raza, M.D., FASGE

Raza is board certified in internal medicine and gastroenterology. He is the medical director of advanced interventional endoscopy. His professional expertise includes diagnostic and therapeutic ERCP, endoscopic ultrasonography and staging of pancreatic and other GI cancers.



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Oklahoma's largest hospital network
3300 N.W. Expressway
Oklahoma City, OK 73112 Phone: (405) 951-2277
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