John Leung, MD, AGAF, FACAAI
★★★★★ 4.78 out of 5 (474 Ratings)
Accepting New Patients
Titles: Founder and CEO, USCIS authorized Civil Surgeon, Tufts University Adjunct Professor in the Department of Biomedical Engineering
Clinical Interests: Eosinophilic esophagitis, Eczema, IBS/bloating, IBD, Eosinophilic GI Diseases, Mast Cell GI Diseases & MCAS, Food allergy, Seasonal allergy
Biography
John Leung, MD, AGAF, FACAAI is a 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 with a research focus on intestinal mucosal immunology under the mentorship of Dr. Joel Weinstock. 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 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 450-600 patients per week. He has conducted over 55 industry and federally funded clinical trials since 2010. He is currently an adjunct professor at Tufts University. 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, Scripps Clinic, American College of Allergy Asthma and Immunology, and the American Gastroenterology Association. Dr. Leung was also recognized as a 2026 Top Doctor in Gastroenterology by Boston Magazine.
Overview:
Programs + Specialties: Gastroenterology, Allergy/Immunology & Nutrition
Training + Education: University of Michigan Medical School; University of Iowa Hospitals and Clinics; Tufts Medical Center; Massachusetts General Hospital, Harvard Medical School
Board Certifications: Gastroenterology, Allergy
Medical Licenses: Massachusetts, Maine, New Hampshire
NPI # 1447328711
Patient Reviews
★★★★★ October 7, 2020 Mariam A. Verified patient
Excellent physician! Very intelligent and listens. Great staff! Wonderful office
★★★★★ Less than 6 months ago Violet V.Verified patient
Very pleased. He took time to explain everything including the steps we would be taking in the future.
★★★★★ November 12, 2019 Tonya S. Verified patient
His practice was clean, responsive and Dr. Leung was very informative throughout the appointments. I would recommend.
Publications
Dr. Leung recent publications:
1.-Journal of Allergy and Clinical Immunology. 2024 Sep 01
2.-Clin Gastroenterol Hepatol. 2021 Jan 22;S1542-3565(21)00075-6.
3.-N Engl J Med 2020; 383:1624-1634
4.-J Pediatr Gastroenterol Nutr 2020 Oct;71(4):524-529
5.-J Allergy Clin Immunol 2020 Jun;145(6):1629-1640.e4
6.-Gastroenterology 2020;159:20–25
Research + Clinical Trials
Community and Professional Leadership
Chair, Board of Directors, Kwong Kow Chinese School, Boston, MA
Chair, Advisory Board, Wang YMCA, Boston, MA
Medical Director, Kwong Kow Chinese School, Boston, MA
Secretary, Massachusetts Allergy & Asthma Society
Honors
2024-2025MediFind.com - 25 of the Best Gastroenterologists in Boston"
2025 SPOKIN.com - Top Rated Allergist in Boston
2023-2025,Findatopdoc.com - Top Gastroenterologist, Allergist and Immunologist
2021-2025,Threebestrated.com - Top 3 Immunologists in Boston
2021-2025,Threebestrated.com - Top 3 Gastroenterologists in Boston
2015, American College of Gastroenterology - SCOPY Award for Best Foreign Language Video, “Chinese Colonoscopy Prep”
2013, FIT Travel Scholarship for the 2013 AAAAI Annual Meeting
2012, FIT Travel Scholarship for the 2012 AAAAI Annual Meeting
2011, First authored manuscript “Colchicine plus ursodiol versus methotrexate plus ursodiol in the treatment of primary biliary cirrhosis: Twenty year follow-up" has been chosen as a top editor’s pick in Clinical Gastroenterology and Hepatology and is featured in GI & Hepatology News, the official newspaper of AGA Institute.
2010, Digestive Diseases Week Poster of Distinction
2010, American Associations of Immunologists Trainee Travel Award
2010, American Associations of Immunologists Block Symposium presentation
2010, Fellowship2Leadership Gastroenterology/Hepatology Fellows' Travel Award
2008, American Gastroenterological Association Academic Skills Workshop Travel Award
2008, Choosing a Career in Academic Gastroenterology and Hepatology Conference Travel Award
2001, National Institutes of Health Summer Internship in Biomedical Research Award
1999, National Science Foundation Summer Internship in Bioengineering Research Award
1999, Phi Kappa Phi Honor Society
1999, Tau Beta Pi Honor Engineering Society
1999, Golden Key National Honor Society
1999, James B. Angell Scholar Award, Dean’s List, Class Honors
1998, James B. Angell Scholar Award, Dean’s List, Class Honors
1997, William J. Branstrom Freshman Prize
1997, James B. Angell Scholar Award, Dean’s List, Class Honors
Professional Memberships
Phi Kappa Phi Honor Society
Tau Beta Pi Honor Engineering Society
Golden Key National Honor Society
OXE Chemical Engineering Honor Society
American Institution of Chemical Engineering Association
American Medical Association
American Family Physicians
American College of Physicians
United Asian American Medical Student Association
American Association of Immunologists
American Gastroenterological Association
American College of Gastroenterology
The Massachusetts Medical Society
New England Endoscopy Society
Society for Mucosal Immunology
American Academy of Allergy Asthma and Immunology
American College of Allergy, Asthma and Immunology