Gastroenterology
John Leung, M.D.
Founding Physician, Boston Food Allergy Center at Tufts Medical Center
Dr. John Leung is a kind and trusted gastroenterologist, immunologist and allergist treating patients living in Boston, MA. Dr. Leung is an alumnus of the University of Michigan, where he earned his medical degree. He completed both his internship and residency in internal medicine at the University of Iowa and a fellowship in gastroenterology at Tufts Medical Center. He continued his training by finishing another fellowship in allergy and immunology at Massachusetts General Hospital. Dr. Leung
22+
Years in Practice
Credentials
Board Certifications
- American Board of Internal Medicine - Gastroenterology
- American Board of Internal Medicine - Internal Medicine
- American Board of Allergy and Immunology
Education & Training
- Medical School: University of Michigan Medical School
- Residency: University of Iowa Hospitals (Internal Medicine)
- Fellowship: Tufts Medical Center (Gastroenterology)
- Fellowship: Massachusetts General Hospital (Allergy and Immunology)
Peer Recognition
- Castle Connolly — Top Doctor
2025-2026 (2 years)
- Healthgrades — Healthgrades Choice
- Healthgrades — Healthgrades Honor Roll
Recognition & Leadership
Leadership Roles
- Founding Physician, Boston Food Allergy Center at Tufts Medical Center
- Co-Director, Pediatric Food Allergy Center at Floating Hospital for Children
Clinical Focus
Subspecialties
Conditions & Treatments
Practice Details
Hospital Affiliations
- Carney Hospital
- Beth Israel Deaconess Medical Center
Experience
22+ years in practice