« Back to Our Team list

Anthony Nicholas Kalloo, M.B.B.S., M.D. Anthony Kalloo, M.B.B.S., M.D.
Division of Gastroenterology and Hepatology
Professor of Medicine

Appointment Phone: 410.933.7495

Dr. Anthony Kalloo is a professor of medicine 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.