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John Leung, MD, AGAF, FACAAI is the only US physician dual board certified in Allergy/Immunology and Gastroenterology. He attended medical school at University of Michigan Medical School and completed his internal medicine residency at University of Iowa Hospitals and Clinics. He then proceeded with a Gastroenterology fellowship at Tufts Medical Center and an Allergy/Immunology fellowship at Massachusetts General Hospital/Harvard Medical School. He began his early career in academia working on several NIH-funded research projects.He is a former site principal investigator of the Consortium of Eosinophilic Gastrointestinal Disease Researchers (CEGiR). He established and directed the Center for Food Related Diseases at Tufts Medical Center and the Pediatric Food Allergy Center at Tufts Children’s Hospital.

In 2015, Dr. Leung founded Boston Specialists/Boston Food Allergy Center. The center has become one of the most distinguished independent clinical and research centers in New England, treating 250-300 patients per week. He has conducted over 40 industry and federally funded clinical trials since 2010. He is currently an adjunct assistant professor at Tufts Friedman School of Nutrition Science and Policy, and an adjunct faculty member of the Immunology Program at Tufts Graduate School of Biomedical Sciences. Both his clinical and research focus are on eosinophilic gastrointestinal diseases, mast cell GI disorders and food allergy/intolerance. He has co-authored more than 50 peer-reviewed manuscripts including an article in New England Journal of Medicine, numerous scientific abstracts, book chapters, and online tutorials. He has been invited to lecture at many well-renowned institutions, some of which include Tufts Medical School, Massachusetts General Hospital, Brigham and Women’s Hospital, Beth Israel Deaconess Medical Center, Massachusetts Medical Society, and the American Gastroenterology Association.




Contact info:

65 Harrison Ave, Ste 201, Boston, MA 02111

Phone: (617) 804-6767 / Text: (617) 958-6296




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Dr. John Leung - America's Top 50 Doctors - Allergist - Massachusetts

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