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Our Team of Weight Loss Experts

Photo of Dr. Vivek Kumbhari, M.B.Ch.B., Ph.D.

Kumbhari, Vivek, M.B.Ch.B., Ph.D.

Associate Professor of Medicine
Director of Bariatric Endoscopy
Primary Location: Sibley Medical Building


Photo of Dr. Dilhana Sumaiya Badurdeen, M.B.B.S.

Badurdeen, Dilhana Sumaiya, M.B.B.S.

Assistant Professor of Medicine
Primary Location: Johns Hopkins Gastroenterology and Hepatology - Howard County
Margo Dunlap

Dunlap, Margo, B.S.N., R.N.

Margo is the clinical registered nurse for the Concierge Weight Loss Program at Johns Hopkins. She is originally from Georgia, where she worked as a floor nurse before moving to Seattle, where she started her career as a clinical registered nurse in gastroenterology and hepatology.

Primary Location: The Johns Hopkins Hospital

Photo of Dr. Anthony Nicholas Kalloo, M.B.B.S., M.D.

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

Professor of Medicine
Primary Location: The Johns Hopkins Hospital (Main Entrance)
Kristen Koller

Kristen Koller, CRNP

Kristen is an advanced gastroenterology nurse practitioner for the Concierge Endoscopic Weight Loss Program at Johns Hopkins. She earned her bachelor of science in biochemistry at Villanova University and her master of science in nursing at Vanderbilt University. Originally from Missouri, Kristen returned to her hometown of St. Louis after graduation to begin her career as a nurse practitioner in internal medicine and eventually made her way to New York City where she began working in advanced gastroenterology at NYU Langone Medical Center.
Primary Location: Sibley Memorial Hospital