Anne Marie O'Broin Lennon, M.B.B.Ch., Ph.D.

Headshot of Anne Marie O'Broin Lennon
  • Director, Division of Gastroenterology and Hepatology
  • Professor of Medicine


Endoscopic Ultrasound, Esophageal Cancer, Gastric Cancer, Gastroenterology, Pancreatic Cancer, Pancreatic Cysts, Therapeutic Endoscopy, Von Hippel-Lindau (VHL) more

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The Johns Hopkins Hospital (Main Entrance)

Appointment Phone: 410-955-5800
1800 Orleans St.
Sheikh Zayed Tower
Baltimore, MD 21287 map
Fax: 410-614-7340

Johns Hopkins Outpatient Center (now called Levi Watkins, Jr., M.D., Outpatient Center)

Appointment Phone: 410-861-7678
601 N. Caroline St.
Baltimore, MD 21287 map


Dr. Anne Marie Lennon is the Director of the Johns Hopkins Division of Gastroenterology and Hepatology and a Professor of Medicine at the Johns Hopkins University School of Medicine. Dr. Lennon is an attending gastroenterologist at The Johns Hopkins Hospital. She received her medical degree from the Royal College of Surgeons in Ireland in 1996. In addition, Dr. Lennon obtained a Ph.D. from The National University of Ireland. She completed an internal medicine residency in Dublin and at the Cleveland Clinic, followed by a Gastroenterology Fellowship in Edinburgh, Scotland. She then completed a two-year Advanced Endoscopy Fellowship in endoscopic ultrasound and ERCP at Johns Hopkins. She is certified in General Internal Medicine and Gastroenterology by the Joint Royal Colleges of Physicians Training Board (JRCPTB) of the United Kingdom and is a fellow of the American Society of Gastrointestinal Endoscopy, the American College of Gastroenterology, the American Gastrointestinal Association and the Royal College of Physicians of Ireland. Dr. Lennon's major interests are the care of patients with pancreatic cysts, pre-cancerous lesions and developing new tools for early cancer detection. more


  • Director, Division of Gastroenterology and Hepatology
  • The Moses and Helen Golden Paulson Professor of Gastroenterology
  • Professor of Medicine
  • Professor of Oncology
  • Professor of Radiology and Radiological Science
  • Professor of Surgery

Departments / Divisions

Centers & Institutes



  • MBBCh; Royal College of Surgeons in Ireland (1996)


  • Internal Medicine; Cleveland Clinic Foundation (1999)
  • Mater Misericordiae University Hospital (1999)


  • Gastroenterology; Johns Hopkins University School of Medicine (2010)
  • Gastroenterology; Royal Infirmary of Edinburgh (2008)
  • Gastroenterology; St.Vincent's Hospital (2001)

Board Certifications

  • None Indicated (None Indicated)

Research & Publications

Videos & Media

  • Play Video:

    What You Need to Know About Pancreatic Cysts

  • Play Video:

    Symptoms You Shouldn’t Ignore | A Woman's Journey

  • Pancreatic Cancer: Hope Through Early Detection

Recent News Articles and Media Coverage

Blood Test Combined With PET-CT Technology Shows Promise in Early Cancer Detection, Inside Tract (Spring, 2021)

Anne Marie Lennon Named Director of Division of Gastroenterology and Hepatology, Inside Tract (Winter, 2021)

A New Way to Detect More Cancers Earlier, TEDxMidAtlantic

New Blood Test for 8 Common Cancers, Inside Tract (Summer, 2018)

DNA and Protein "Liquid Biopsy" Finds Tumors Faster, Inside Tract (Winter, 2018) 

Pancreatic Cyst Clinic Gathers World-Class Experts, Inside Tract (Fall, 2016)

Collaboration is an Anchor of Johns Hopkins Research, Inside Tract (Fall, 2016)

10 Cancer Symptoms You Can't Ignore, Johns Hopkins Webinar Series

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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