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Photo of Dr. Anthony Kalloo

Anthony Nicholas Kalloo, M.B.B.S., M.D.

Chief, Division of Gastroenterology and Hepatology
Professor of Medicine

Male

Appointment Phone

410-933-7495

Main Location

The Johns Hopkins Hospital

Out-of-State & International Patients +
Out of State Patients

Call 410-464-6641 (8a.m. to 6p.m., EST, Mon-Fri)

Learn more about our out-of-state patient services »

International Patients

Call +1-410-502-7683 (7a.m. to 6p.m., EST, Mon-Fri)

Learn more about our international patient services »

Titles

  • Chief, Division of Gastroenterology and Hepatology
  • Professor of Medicine

Departments

Locations

The Johns Hopkins Hospital

Appointment Phone: 410-933-7495

600 N. Wolfe Street
Sheikh Zayed Tower
Baltimore, MD 21287 map
Phone: 410-933-7495
Fax: 410-614-7340

Johns Hopkins Medicine - Green Spring Station

Appointment Phone: 410-933-7495

Green Spring Station
2360 W. Joppa Road
Lutherville, MD 21093 map
Phone: 410-933-7495
Fax: 410-616-7351

Expertise

Abdominal Pain, Clinical Gastroenterology, Colon Polyps, Digestive Diseases, Gallbladder Disorders, Gallstones, Gastroenterology, Pancreatic Cancer, Pancreatitis, Rectal Problem, Sphincter of Oddi, Stomach Pain, Stomach Ulcer

Research Interests

Natural Orifice Translumenal Endoscopic Surgery, NOTES, Pancreatitis, Sphincter of oddi, Abdominal pain

Biography

Dr. Anthony Kalloo is a Professor of Medicine at Johns Hopkins Hospital, Division of Gastroenterology. He is the Director of The Division of Gastroenterology and Hepatology with special interests in Natural Orifice Translumenal Endoscopic Surgery, therapeutic endoscopy, and sphincter of Oddi dysfunction. 

After receiving his medical degree at the University of West Indies Medical School, Dr. Kalloo interned at Port of Spain General Hospital in Trinidad and performed his Internal Medicine Residency Howard University Hospital in Washington, D.C., where he was also Chief Resident in Internal Medicine. He completed his fellowship training program at the combined Georgetown University, VA Medical Center and NIH program. He was an Instructor in Medicine at Georgetown University prior to joining the faculty at Johns Hopkins in 1988. He was an Associate Editor of Gastrointestinal Endoscopy.

Dr. Kalloo has authored multiple scientific papers and book chapters. He has pioneered and has several patents including the use of Botulinum Toxin in the gastrointestinal tract, endoscopic cryotherapy and the winged biliary/pancreatic stent and others related to natural orifice surgery. He is the pioneer of Natural Orifice Translumenal Endoscopic Surgery, a technique that will enable abdominal surgery without the use of incisions.

Dr. Kalloo is a past Panel Chair for Gastroenterology and Urology Devices with the United States Food and Drug Administration.   He is a member of the Apollo group, a think-tank endoscopy group. Dr. Kalloo and the Division of Gastroenterology and Hepatology aim to advance the understanding, diagnosis, treatment and prevention of gastrointestinal and liver disease through patient care, education and research.

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Featured Video

Sphincter of Oddi Dysfunction - Q&A

    Additional Information

  • Education +

    Degrees

    • Faculty of Medical Sciences / MD (1979)

    Residencies

    • Howard University Hospital / Internal Medicine (1985)

    Fellowships

    • Veterans Affairs Medical Center / Gastroenterology and Hepatology (1987)

    Certifications

    • American Board of Internal Medicine / Gastroenterology (1987)
    • American Board of Internal Medicine / Internal Medicine (1985)
  • Research & Publications +

    Patents

    Gastric Reduction Endoscopy
    Patent # US6572629 B2 | 06/03/2003

    A technique is described for reducing the stomach cavity endoscopically, from within the stomach or, in the alternative, from within the peritoneal cavity via a wall of the digestive tract. This new approach for reducing gastric capacity uses a flexible endoscope and a specially adapted ligating loop that is secured at spaced locations about an inner periphery of the stomach. After attachment, the loop is constricted to draw together the associated gastric wall portions to reduce the food receiving cavity defined at the base of the esophagus. The ligating loop is preferably a slip knotted loop.

    Methods For Diagnostic And Therapeutic Interventions in The Peritoneal Cavity
    Patent # US7721742 B2 | 05/25/2010

    A novel approach to diagnostic and therapeutic interventions in the peritoneal cavity is described. More specifically, a technique for accessing the peritoneal cavity via the wall of the digestive tract is provided so that examination of and/or a surgical procedure in the peritoneal cavity can be conducted via the wall of the digestive tract with the use of a flexible endoscope. As presently proposed, the technique is particularly adapted to transgastric peritoneoscopy. However, access in addition or in the alternative through the intestinal wall is contemplated and described as well. Transgastric and/or transintestinal peritoneoscopy will have an excellent cosmetic result as there are no incisions in the abdominal wall and no potential for visible post-surgical scars or hernias.

    Devices And Methods For Treatment of Gastrointestinal Disorders
    Patent # US8233996 B2 | 07/31/2012

    An implantation device for releasably holding implantable microstimulators can be used to guide one or more microstimulators to any site within the gastrointestinal tract for implantation. The device can further releasably hold one or more ligation clips for securing the one or more microstimulators in place within the implantation site(s) and/or for closing an incision in which a microstimulator is implanted. The device can be employed using open, laparoscopic, and endoscopic techniques.

    Devices And Methods For Treatment of Gastrointestinal Disorders
    Patent # US7871415 B2 | 01/18/2011

    An implantation device for releasably holding implantable microstimulators can be used to guide one or more microstimulators to any site within the gastrointestinal tract for implantation. The device can further releasably hold one or more ligation clips for securing the one or more microstimulators in place within the implantation site(s) and/or for closing an incision in which a microstimulator is implanted. The device can be employed using open, laparoscopic, and endoscopic techniques.

    Method And Device For Endoscopic Abrasion
    Patent # WO2013070457 A3 | 07/11/2013

    The present invention provides an endoscopic abrasion device and methods of use thereof. The device includes a catheter having an inflation balloon including one or more elements disposed on the balloon for abrasion of tissue when the balloon is rotated about the longitudinal axis of the catheter. The device may be used to treat and diagnose diseases of the esophageal passage, such as Barrett's disease.

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