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John Leung, MD Accepting New Patients Virtual Appointments Available

Programs + Specialties
Training + Education University of Michigan Medical School; University of Iowa Hospitals and Clinics; Tufts Medical Center; Massachusetts General Hospital, Harvard Medical School
Board Certifications Internal Medicine, Gastroenterology, Allergy
NPI # 1447328711
Gender Male
Language(s) Chinese-Cantonese
Accepted Insurances View Accepted Insurances at Tufts MC + Tufts Children's Hospital

The Patient Rating score is an average of all responses to physician-related questions on our nationally-recognized Patient Satisfaction Survey

Tufts Medical Center - Gastroenterology
Proger Building, 3rd Floor
800 Washington St.
Boston, MA 02111
Phone #: 617-636-5883 (Gastroenterology)
Fax #: 617-636-9292
Floating Hospital for Children - Gastroenterology & Nutrition
Floating Hospital, 2nd Floor
800 Washington St.
Boston, MA 02111
Phone #: 617-636-3266 (Pediatric Allergy)

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

1. Leung J, Beukema KR, Shen AH: Allergic Mechanisms of Eosinophilic Oesophagitis. Best Pract Res Clin Gastroenterol. 2015 Oct;29(5):709-20

2. Kliewer KL, Venter C, Cassin AM, Abonia JP, Aceves SS, Bonis PA, Dellon ES, Falk GW, Furuta GT, Gonsalves N, Gupta SK, Hirano I, Kagalwalla A, Leung J, Mukkada VA, Spergel JM, Rothenberg M. Should wheat, barley, rye and/or gluten be avoided in a six food elimination diet? J. Allergy Clin. Immunol. 2015.

3. Safroneeva E, Coslovsky M, Kuehni CE, Zwahlen M, Haas NA, Panczak R, Taft T, Hirano I, Dellon ES, Gonsalves N, Leung J, Bussmann C, Woosley JT, Yan P, Romero Y, Furuta G, Gupta S, Aceves S, Chehade M, Straumann A, Schoepfer AM. Eosinophilic oesophagitis: relationship between quality of life and clinical, endoscopic, and histologic activity. Aliment Pharm Ther. 2015.

4. Schoepfer AM, Panczak R, Zwahlen M, Kuehni CE, Coslovsky M, Maurer E, Haas NA, Alexander JA, Dellon ES, Gonsalves N, Hirano I, Leung J, Bussmann C, Collins MH, Newbury RO, De Petris G, Smyrk TC, Woosley JT, Yan P, Yang GY, Romero Y, Katzka DA, Furuta GT, Gupta SK, Aceves SS, Chehade M, Blanchard C, Straumann A, Safroneeva E ;International EEsAI Study Group. How Do Gastroenterologists Assess Overall Activity of Eosinophilic Esophagitis in Adult Patients? Am. J. Gastroenterol. 2015.

5. Schoepfer AM, Straumann A, Panczak R, Kuehni CE, Romero Y, Maurer E, Alexander JA, Hirano I, Gonsalves N, MD, Furuta GT, Dellon ES, Leung J, Moawad FJ, Collins MH, Bussmann C, Netzer P, Zwahlen M, Safroneeva E. International EEsAI Study Group. Dysphagia, behavioral changes, and thoracic pain predict adult patient-reported eosinophilic esophagitis severity. Gastroenterology 2014: 147(6): 1255–1266.e21

6. Kang D, Schlachter SC, Carruth RW, Kim M, Wu T, Tabatabaei N, Vacas-Jacques P, Shishkov M, Woods K, Sauk JS, Leung J, Nishioka NS, Tearney GJ. Comprehensive confocal endomicroscopy of the esophagus in vivo. Endosc Int. Open 2014 Jul 16;2(03):E135–40

7. Tabatabaei N, Kang D, Wu T, Kim M, Carruth RW, Leung J, Sauk JS, Shreffler W, Yuan Q, Katz A, Nishioka NS, Tearney GJ. Tethered confocal endomicroscopy capsule for diagnosis and monitoring of eosinophilic esophagitis. Biomed. Opt. Express 2013;5:197–207

8. Leung J, Katz AJ, Shreffler WG, Yuan Q, Hundal N, Butterworth CA. Tolerance of Baked Milk in Patients with Cow's Milk-mediated Eosinophilic Esophagitis. J Allergy Clin Immunol.2013;132:1215–1216.e1.

9. Leung J, Guyer A, Banerji A. IgE-mediated hypersensitivity to ondansetron and safe use of palonosetron. J Allergy Clin Immuno. Pr. 2013: 1(5); 536-537

10. Islam SA, Ling MF, Leung J, Shreffler WG, Luster AD. Identification of human CCR8 as a CCL18 receptor. J Exp Med. 2013 Sep 23;210(10):1889-98

John Leung, MD attended medical school at University of Michigan Medical School and completed his internal medicine residency at University of Iowa Hospitals and Clinics. He then finished a Gastroenterology fellowship at Tufts Medical Center. He worked as a gastroenterology consultant at Tufts Medical Center for a year before completing an Allergy/Immunology clinical and research fellowship at Massachusetts General Hospital/Harvard Medical School. His clinical and research focus are on eosinophilic esophagitis and food allergy. He has coauthored more than 40 peer-reviewed manuscripts, scientific abstracts, book chapters, and online tutorials.

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

John Leung, MD, Director of the Centers for Food Related Diseases at Tufts MC

NIH-funded research network in eosinophilic gastrointestinal diseases

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Dr. John Leung, a pediatric allergist at Tufts Children's Hospital in Boston, conducts an allergy test.

Pediatric Allergist, Dr. John Leung, provides tips for parents of children with food allergies as the kids head back to school.

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Current Funding

2015 –
Grant title: Eosinophilic Esophagitis (EoE) Intervention Trial-Randomized 1 Food Elimination vs. 4 Food Elimination Diet followed by Swallowed Glucocorticoids
Funding Source: PCORI
Role: Site Principal investigator
2015 –
Grant title: Decreasing Asthma-Related Healthcare Costs through Tele-Asthma Management
Funding Source: LCO 2015 Performance and System Improvement Program
Role: Principal investigator
2015 –
Grant title: A Phase III, Randomized, Placebo-Controlled Clinical Trial to Study the Efficacy and Safety of MK-3641, a Ragweed (Ambrosia artemisiifolia) Sublingual Immunotherapy Tablet, in Children With a History of Ragweed-Induced Rhinoconjunctivitis With or Without Asthma
Funding Source: Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc. ID: NCT02478398
Role: Site Principal investigator
2014 –
Grant title: A Randomized, Double-Blind, Parallel, Placebo-Controlled Study of the Efficacy, Safety and Tolerability of Dupilumab in Adult Patients with Active Eosinophilic Esophagitis
Funding source: Regeneron Pharmaceuticals Inc.
Role: Site Principal investigator
2014 –
Grant title: Consortium of Eosinophilic Gastrointestinal Disease Researchers
Funding Source: National Institutes of Health
Grant number: 1U54AI117804-01
Role: Site Principal investigator
Grant title: Development, Validation and Evaluation of an Adult and Pediatric Eosinophilic Esophagitis Activity Index: A Prospective Multicenter Study
Funding Source: Swiss National Science Foundation (grant no. 32003B_135665/1), AstraZeneca AG (Switzerland), Aptalis, Dr. Falk Pharma GmbH (Germany), Glaxo Smith Kline AG, Nestlé S. A. (Switzerland), The International Gastrointestinal Eosinophil ResearcherS (TIGERS). ID: NCT00939263
Role: Site Principal investigator

Past Funding

Grant title: OBS in Adolescent and Young Adults With EOE: A Phase II, Randomized, Double-Blind, Placebo Controlled, Study With an Open Label Extension
Funding Source: Meritage Pharma, Inc. ID: NCT01642212
Role: Site Principle investigator
Grant title: Assessment of Fractionated exhaled Nitric Oxide (FeNO) as a biomarker for the treatment of eosinophilic esophagitis ID: NCT01170234
Funding Source: TIGERS Concept Awards (75K), Tufts CTSI Pilot Studies Program Award (15K)
Role: Principle investigator
Grant title: Effects of Enteric Helmith Infection on Gut Inflammation in a Murine Model of Food Hypersensitivity
Funding Source: Tufts Medical Center Research Award (50K)
Role: Principle investigator

  • Advisory board member for Wang YMCA, Boston, MA (2014-Present)
  • Health Advisory Council of a regional newspaper Sampan, Boston (2014-Present)