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Dr. John Leung, MD

Allergist, Gastroenterologist, Internist

Professional statement

*PLEASE CALL OUR CLINIC BEFORE YOUR APPOINTMENT TO CONFIRM INFORMATION, INCLUDING INSURANCE ID *IF THIS IS YOUR FIRST APPOINTMENT WITH DR. JOHN LEUNG, PLEASE REMAIN OFF OF ALL ORAL ANTI-HISTAMINES 7 DAYS PRIOR TO YOUR APPOINTMENT. These include: Benadryl, Loratadine, Allegra, Claritin, Alavert, Zyrtec, Zantac, Singulair, and all other oral anti-histamines. John Leung, MD is the founding physician of Boston Food Allergy Center, director of the Food Allergy Center at Tufts Medical Center and co-director of the Pediatric Food Allergy Center at Floating Hospital for Children. He is the first US-trained physician triple board-certified in Allergy/ Immunology, Gastroenterology and Internal Medicine. Dr. Leung attended medical school at the University of Michigan Medical School and completed his internal medicine residency at University of Iowa Hospitals and Clinics. He then completed a 4-year clinical/research Gastroenterology fellowship at Tufts Medical Center, followed by an Allergy/Immunology fellowship at Massachusetts General Hospital/Harvard Medical School. Dr. Leung is the site principal investigator for multiple NIH-funded and pharmaceutical sponsored studies. He is an assistant professor in the Department of Medicine and Department of Pediatrics at Tufts University, an adjunct faculty in Immunology, an affiliated faculty of Tufts Institute for Innovation, and a nominating committee number of Obesity, Metabolism & Nutrition section of the American Gastroenterology Association Institute Council. He has coauthored numerous peer-reviewed manuscripts, scientific abstracts, book chapters, and online tutorials. His clinical and research focuses are on eosinophilic esophagitis, gastrointestinal disorders, food & intolerance as well as other allergic/immunologic condition

In-network insurances

  • AARP
  • Aetna
  • Anthem Blue Cross

Specialties

  • Gastroenterologist
  • Allergist
  • Internist

Practice names

Hospital affiliations

  • Tufts Medical Center

Board certifications

  • American Board of Allergy and Immunology
  • American Board of Internal Medicine
  • Gastroenterology (Internal Medicine)

Education and training

  • University of Iowa, Internship in Internal Medicine
  • Massachusetts General Hospital, Fellowship in Allergy and Immunology
  • Tufts Medical Center, Fellowship in Gastroenterology
  • Medical School - University of Michigan, Doctor of Medicine
  • University of Iowa, Residency in Internal Medicine

Professional memberships

  • American College of Gastroenterology
  • OXE Chemical Engineering Honor Society
  • Phi Kappa Phi Honor Society

Awards and publications

  • 1999 Tau Beta Pi Honor Engineering Society
  • 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. Development and validation of a symptom-based activity index for adults with eosinophilic esophagitis. Gastroenterology 2014: 147(6): 1255–1266.e21
  • Dellon ES, Collins MH, Bonis P, Capocelli K, Donil R, Falk G, Furuta G, Gupta S, Hirano I, Hiremath G, Kagalwalla A, Leung J, Liacouras C, Menard-Katcher C, Muir A, Mukkada V, Putnum P, Schoepfer A, Straumann A, Wershil B, Wu J, Yan GY, Rothenberg ME, Gonsalves N. Substantial variability in biopsy practice patterns among gastroenterologists for suspected eosinophilic gastrointestinal disorders. Clin Gastroenterol Hepatol. In press, 2016.

Zocdoc awards

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Languages spoken

  • Chinese (Cantonese)
  • Chinese (Mandarin)
  • English
  • Spanish

Provider's gender

Male

NPI number

1447328711

Office locations

Boston Food Allergy Center

65 Harrison Avenue, Suite 201

Boston, MA 02111

Patient reviews
All reviews have been submitted by patients after seeing the provider. For more information, check out our Patient Knowledge Base.
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Based on 184 reviews

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I actually got there 20 minutes early to fill out paperwork and was seen immediately after arriving. Dr. Leung was incredibly down-to-earth, warm, and friendly. He really made an effort to calm my nerves. His intern staff member was really greatas well. Really quality! The facility is nice as well.
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Great!
Less than 3 months ago
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I have never felt more impressed with a doctor’s office on the first visit. Dr. Leung and his intern were both fabulous, patient, and not at all dismissive. I did not feel rushed at all. The practice appears to be verywell-run, clean, embraces technology and makes everything as easy as possible for patients. Amazing!
Source: Zocdoc
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Excellent doctor for EGID's - the combined allergy/immunology and GI experience is priceless. Highly recommend.
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He came in the room for less than five minutes; did not even sit down, and diagnosed me right away without asking any questions or if I had any concerns. Gave me over-the-counter medication immediately without investigating at all, and didnot answer any concerns of mine. Deeply disappointed and what a waste of time.
Less than 3 months ago
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Excellent
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Very efficient clinic. Really care about the patients, doing whatever it takes to get a problem solved. All staff are very professional, helpful and kind.
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Very nice but a bit dismissive of problems
Less than 6 months ago
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Dr. Leung is a wonderful and friendly doctor that truly cares. He makes you feel really relaxed and connects you with the right resources immediately (in my case, he referred me to genetics doctor right away). He took my family historyvery seriously and got me in for a colonoscopy very quickly even though I'm very young for screening. He made the colonoscopy experience a lot more comfortable and less daunting. He takes great care of patients!!
Source: Zocdoc
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He is very smart and knowledgeable. It is very comforting to talk to him about our kids and their food allergies. He avoids unnecessary testing and is very practical. We are moving from Boston area now couple months and we are going to miss him not being our kids doctor.
Source: Zocdoc
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He was amazing! Even though I waited a while it was worth is because only great doctors that actually take time and care for their patients fall behind.
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We love Dr. Leung and his team. He takes care of both my son and husband for different reasons. He is very knowledgeable and up to date on the most advanced practices. He clearly puts thought into his plans for eachpatient and takes many things into account. For example, I was struck by his awareness that a milk allergy can be socially isolating for a child. The entire team is very friendly. We have spent hours in the office for allergy shots and good challenges and it is always a good experience. My son loves everyone there. Highly reccomend!! Can’t say enough good things about the practice.
Less than 6 months ago
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Such a wonderful, kind, caring, and intelligent doctor! Very patient-centric and cares about your needs, desires, family history, etc.
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I found Dr Leung very knowledgeable and I am hopeful he will be able to help me when other drs have not. His staff are all very friendly and the office felt very organised and showed several short videos which werepreprepared and professional. I look forward to my follow up appointment and test results.
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Well, not really helpful. Ends up paying several grant for testing fees. Good thing is insurance covers most. But what the testing result will do for you? Nothing. Turns out still need to buy over counter anti-allergy for allergy season. Will not recommend.
Less than 6 months ago
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My first and only visit to this office. I spoke to Dr Leung’s intern for the most part. The intern was very new and didn’t seem to know much but took a lot of notes. When Dr Leung came in, helistened to the intern repeat what I told him of my history. He didn’t take much time nor did he seem too interested in my concerns. Overall I felt very rushed and the visit was a waste of time. Oh! And I asked for some refills on my prescription and they called in the wrong medication! I can’t return it so I wasted my money on that too!
Less than 6 months ago
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I had an all around great visit. Dr. Leung and his staff took a lot of time to explain everything very carefully and in detail. I would highly recommend him.
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We love Dr. Leung! So helpful in finding the issue with our daughter's allergies. Great bedside manner. Very friendly knowledgeable and professional!
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Dr. Leung has helped me when no one else could.
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He was great. He found out my problem right away! Waiting time should be improved though.
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I've seen Dr. Leung for my own issues and have been there with family for their own. He's compassionate, caring, and his entire staff works closely with each other. He has a very good sense of humor and always makes youfeel good about any treatment or course of action you may need to take.
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Dr. Leung was outstanding. He explained everything needed perfectly and worked towards solutions.
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Very thorough examination and comprehensive care solution - both in terms of medication and everyday habits I can change to improve my health.
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Excellent - friendly and explained everything very well.
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I just love this office-- everyone is joyful and polite and respectful. I never feel rushed with Dr. Leung and he genuinely cares. I really like the assistants too, as well as his intern. I am here for a difficult situation--eye pain which I believe is tied to gut pain, and Dr. Leung is working with me to try to get to the bottom of 6 years of pain and gut issues. So many offices these days are rushed or rude and this one is not. I am so grateful to have found them!
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Dr. John Leung solved skin issues that multiple dermatologists couldn’t. I had been in pain for so long & he listened to everything I had to say & gave me solutions that worked for me. After that he created a timelineof healing for me to solve all of my allergies. He has been so helpful!
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Dr. Leung was amazing. He was thorough, transparent and quick! He also laid out several treatment plans and let me choose what was best for me; I'm glad I saw him!
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Very professional and very friendly. Understood my issue well and provided good recommendations. Great doctor all around.
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Overall great experience. Dr. Leung was very patient explaining EVERYTHING. I asked a ton of quesitons and he answered them all.
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He was very thorough, listened and asked questions to better understand my situation and made me feel comfortable right from the start. He explained things very well. Highly recommend.
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Dr. Leung was great. He was very helpful and honest and straight talking. Would highly recommend him. He even folled up with me to make sure I got my perscriptions okay.
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Really great experience with Dr. Leung re allergy testing. Would definitely recommend. Very thorough and knowledgeable, and he listened and wants to help.
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I was impressed with Dr. Leung. Great office staff to support his practice. Never felt like he was in a hurry, answered all my questions (backed by research and study). I would highly recommend his practice.
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Not the best first impression. I came in early, waited, did a Q&A with a nurse, and waited for a while to finally see Dr. Leung, then he did a very quick and general Q&A and concluded that I had IBS.He did not examine my bloated stomach nor explained anything further about IBS itself. Then he gave me 2 options, diet or medicine, I asked what kind of diet, and he said FODMAPs and told his nurse to let me watch a video about it on a tablet and left without saying anything. Then I did 2 tests and was told to come back in a week. I feel like I should have received more explanation and care from Dr. Leung as he rushed through everything. Not the consultation and 5-star professionalism that I expected from reading the reviews.
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Dr. Leung was the best, most professional doctor I have encountered In a very long time. He approached me as a whole person not as an individual with symptoms to write a script for. Although we ultimately haven't found an answerto my symptoms, we have ruled out serious things which in itself is very helpful.
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I LOVE him! He is very knowledgeable and understanding. I also love how pleasant the receptionist & nurses are... Always smiling & happy to help!
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I arrived early because I drove into Boston and did not want to be late. Dr. Leung came over to me and introduced himself. I was signed in early and they did the test thirty minutes earlier than scheduled. Excellent staffmembers, pleasant and efficient. Dr. Leung's patient areas were neat and clean which I appreciate. I had a very positive visit at The Boston Food Allergy Center. Dr. Leung is an extremely intelligent physician and he is on top of everything in his specialty. I trust his medical diagnosis.
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Dr. Leung is amazing! While I was waiting, he came over to introduce himself and say he would be with me as soon as possible. The front desk staff were very friendly as well. When he finally saw me, he wasprofessional and knowledgeable and made sure to let me know I could call/stop in any time. Would recommend him for adults and children!
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He worked very efficiently. I spent only 30mins and he helped for all my needs
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The entire staff was really friendly! Dr. Leung took the time to walk me through all of my options and answer any questions I had. He was joking with me and really cared about getting me the best treatment that works for me. Highly recommend!
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I had no issues whats-so-ever. The staff was helpful, and Dr. Leung was thorough and engaging. I watched him handle wild, twin 3 years with ease, while I, as a mom, was cringing and feeling badly for the furniture they bounced all over. .
More than 1 year ago
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Excellent bedside manner, calm and unhurried.
More than 1 year ago
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Dr. Leung is one of the best physicians I've ever encountered. Always on time, always involved and follows up after of his own choice. My kids are well cared for by him and his team.
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Dr. Leung is an excellent doctor. He examines easy, natural fixes prior to jumping to medication. He explains his rationale and is very up front. I would recommend him to anyone.
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inspired confidence in me that whatever is going on with my body, we will fix it! loved transparency and efficiency. A+ all around
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The wait time was absolutely ridiculous. I had an 8:30 am appointment, I got there early and didn't see the doctor until 9:45.
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I highly recommend Dr. John Leung for his knowledge of gastro-intestinal concerns he is up to date on treatment plans. Bonus he is kind and fun to have conversations with. His staff is also very sweet and caring. Patrice Mc
Source: Zocdoc
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Dr. Leung & his staff are kind and not stressed. The office seems a little chaotic but runs smoothly. I was surprised by how open the office was and how casual. The doctor is right there. I wanted to ask himanother question and I was able to. He's not shut off behind endless corridors and rooms and counters like most typical doctors. The dietician listened intently to me. She was kind and caring. She took detailed notes of what I said.
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Knows the I-693 in detail, and spent some time to reassure me about quality control. He understood I was in a hurry, and paid attention to speeding up the process. Receptionist cared a lot about reducing my costs.
More than 1 year ago
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Dr Leung is very detailed, professional with a broad base of medical knowledge and experience. He cares about his patients and their detailed medical history. He knows how to access great mefical resouces through his Tufts association. He is highly respected by his peers.
Source: Zocdoc
ZocdocFind an AllergistDr. John Leung, MD