Larry Siu, MD, Gastroenterology, Morristown, NJ, Saint Barnabas Medical Center


Gastroenterology Morristown, NJ

Advanced Endoscopic Interventional, Gastrointestinal Cancer, Pancreas Disease


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  • Dr. Siu is board certified in Internal Medicine and Gastroenterology and Hepatology (liver diseases). Clinically, he treats all intestinal and digestive conditions, including acid reflux, irritable bowel syndrome, fatty liver disease and Hepatitis B and C. He is also proficient in endoscopies and colonoscopies for colon cancer screening.

    Dr. Siu's clinical interest is in gastrointestinal oncology. He is specially trained in therapeutic and advanced endoscopy, including endoscopic ultrasound (EUS), endoscopic retrograde cholangiopancreatography (ERCP), and endoscopic luminal therapies such as stenting, radio frequency ablation, and endoscopic mucosal resection. These advanced procedures provide him with unique skills for management of pancreatic and biliary disorders, prevention of colon cancer, treatment of Barrett's esophagus and esophageal cancers, and palliation of various intestinal cancers.

    Dr. Siu sees patients in Morristown, NJ (101 Madison Avenue, Suite 100, Morristown, NJ 07960 - ph: 973-455-0404). He is also affiliated with Saint Barnabas Medical Center with clinical privileges at Morristown Medical Center for hospital procedures and consultations.

Education & Training

  • Montefiore Medical Center/Albert Einstein College of MedicineOTHER_TRAINING
  • SUNY Health Science Center at Brooklyn
    SUNY Health Science Center at BrooklynFELLOWSHIP
  • Brown University
    Brown UniversityRESIDENCY
  • State University of New York Downstate Medical Center College of Medicine
    State University of New York Downstate Medical Center College of MedicineMEDICAL_SCHOOL

Certifications & Licensure

  • NJ State Medical License
    NJ State Medical License 2015 - 2021
  • NY State Medical License
    NY State Medical License 2014 - 2015
  • RI State Medical License
    RI State Medical License 2008 - 2012
  • American Board of Internal Medicine Internal Medicine
  • American Board of Internal Medicine Gastroenterology

Publications & Presentations

Journal Articles

  • Hepatitis C and Alcohol  
    Siu L, Foont J, Wands JR., Seminars in Liver Disease, 5/29/2009
  • Signaling pathways activated by epidermal growth factor receptor or fibroblast growth factor receptor differentially regulate branching morphogenesis in fetal mouse su...  
    Koyama N, Hayashi T, Ohno K, Siu L, Gresik EW, Kashimata M., Development Growth and Differentiation, 9/1/2008


  • Novel Use of Fully Covered Self-Expandable Metal Stent (SEMS) for Drainage of Perirectal Abscesses.
    Izzy M, Lee M, Siu L, Ho S, American College of Gastroenterology Annual Scientific Meeting, Honolulu, HI, 10/18/2015
  • Rare cause of acute recurrent pancreatitis (Can’t always blame it on the alcohol)
    Siu L, Ahmed A, Lee D, American College of Gastroenterology Annual Scientific Meeting, San Diego, CA, 10/15/2013
  • Isolated intestinal involvement of angioedema induced by ACE Inhibitor
    Siu L, Ahmed A, Grossman E, American College of Gastroenterology Annual Scientific Meeting, San Diego, CA, 10/14/2013
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  • Classification of pancreatic cystic neoplasms through cytokine profiling of cyst fluid - Grand Rounds 
    SUNY Downstate - 5/15/2014
  • Inflammatory Bowel Disease: An Up-to-date Review - CCFA Patient Forum 
    Honolulu, HI - 4/14/2008
  • EGF and FGF signaling pathways differentially regulate branching morphogenesis of fetal mouse submandibular glands 
    City College of New York, NY - 2/16/2006

Professional Memberships

Other Languages

  • Chinese (Cantonese)

Hospital Affiliations