John Gunn Lee, MD, Gastroenterology, Orange, CA, VA Long Beach Healthcare System

John GunnGLeeMD

Gastroenterology Orange, CA

Advanced Endoscopic Interventional, Biliary Tract Disease, Gastrointestinal Cancer, Pancreas Disease

Professor of Medicine, UC Irvine

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Education & Training

  • Duke University Hospital
    Duke University HospitalFellowship, Gastroenterology, 1991 - 1994
  • VA Greater Los Angeles Healthcare System
    VA Greater Los Angeles Healthcare SystemResidency, Internal Medicine, 1987 - 1991
  • University of Miami Miller School of Medicine
    University of Miami Miller School of MedicineClass of 1987, MD
  • University of MiamiB.S., Cum Laude, 1983

Certifications & Licensure

  • OR State Medical License
    OR State Medical License 1994 - Present
  • CA State Medical License
    CA State Medical License 1988 - 2021
  • American Board of Internal Medicine Gastroenterology

Awards, Honors, & Recognition

  • America’s Most Honored Professional, Top 1% Award 2016
  • Top Doctor Los Angeles Magazine, 2016
  • Top Doctor US News and World Report, 2012
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Clinical Trials

Publications & Presentations


Journal Articles

  • Altered anatomy ERCP with spiral overtube-assisted stent placement  
    Samarasena JB, Huang JY, Chin M, Chang KJ, Lee JG, Gastrointest Endosc, 1/29/2016
  • The "PEG-Pedi-PEG" technique: a novel method for percutaneous endoscopic gastrojejunostomy tube placement (with video)  
    Samarasena J, Kwak NH, Chang K, Lee JG, Gastrointest Endosc, 1/18/2016
  • Role of serial EUS-guided FNA on pancreatic cystic neoplasms: a retrospective analysis of repeat carcinoembryonic antigen measurements  
    Nakai Y, Iwashita T, Shinoura S, Park DH, Samarasena JB, Lee JG, et al, Gastrointest Endosc, 1/6/2016
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Books/Book Chapters

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  • Fiducial Marker Seeds to Quantitate Interfraction Target Movement in Pancreatic Cancer Radiation Therapy
    Bahari-Kashani JN, Lee JG, Roa DE, Chang K, et al, American Society for Radiation Oncology Annual Meeting, San Diego, CA, 1/1/2010
  • Predictive value of pancreatic ductal dilation on endoscopic ultrasound diagnosis of pancreatic cancer
    Nguyen WT, Chen AM, Chen WP, Lee J et al, Gastrointest Endosc, 1/1/2007
  • Endoscopic ultrasound-guided paracentesis of the ascitic fluid
    Rooba W, Lee J, Gu M, 54th Annual Scientific Meeting of American Society of Cytopathology, Toronto, Canada, 1/8/2006
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  • Primary Sclerosing Cholangitis 
    Orange, CA - 1/1/2016
  • CRE infection 
    Orange, CA - 1/1/2015
  • CRE and ERCP 
    Anaheim, CA - 1/1/2015
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  • Treatment of GIST 
    Lee JG, Webcast
    Chicago, IL - 1/1/2011
  • Colon cancer and polyps 
    Lee JG, ACP-ASIM
  • Selective cannulation 
    Lee JG, Leung JWC, 13th Annual ACG postgraduate course
    Miami, FL - 1/1/1994
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Professional Memberships

Hospital Affiliations