About Jess Kaplan, MD

Dr. Jess Kaplan is an attending physician in the Department of Pediatrics and a Pediatric Gastroenterologist at MassGeneral Hospital for Children. He completed both his residency in pediatrics (2008) and fellowship in pediatric gastroenterology and nutrition (2011) at MassGeneral Hospital for Children.  Dr. Kaplan's clinical interests include inflammatory bowel diseases (IBD) including Crohn's disease and ulcerative colitis, and other immune-mediated and general gastrointestinal disorders.  He sees patients in the Pediatric IBD Program at MGH, MGH West and at Newton Wellesley Hospital. Dr. Kaplan serves as the clinical director of the Pediatric IBD Program and director of IBD Clinical trials at MGHfC, where he conducts clinical and translational research and leads quality improvement initiatives. He has a strong interest in dietary management of IBD and is the clinical lead of the nutritional therapy in IBD program. Dr. Kaplan also leads the Pediatric fecal microbiota transplantation (FMT) program at MGHfC.

Departments, Centers, & Programs:

Clinical Interests:

Treats:

Locations

Mass General Brigham for Children at Spaulding Rehabilitation Network Outpatient
280D Route 130
Heritage Park Plaza
Suite 7
Forestdale, MA 02644
Phone: 888-644-3248

Waltham: Mass General Waltham

Mass General Brigham for Children: Pediatric Gastroenterology & Nutrition Program
55 Fruit St.
Yawkey Center for Outpatient Care
Suite 6B
Boston, MA 02114
Phone: 617-726-8705

Mass General Brigham for Children at Newton-Wellesley Hospital
2014 Washington St.
Newton, MA 02462
Phone: 617-243-6585

Medical Education

  • MD, Univ. Mass. Worc. M.S.
  • Residency, Massachusetts General Hospital
  • Fellowship, Massachusetts General Hospital

American Board Certifications

  • Pediatric Gastroenterology, American Board of Pediatrics
  • Pediatrics, American Board of Pediatrics

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.


Publications

  • Moy MP, Kaplan JL, Moran CJ, Winter HS, Gee MS. MR enterography as a biomarker of mucosal healing in young patients with Crohn's disease. AJR Am J Roentgenol. 2016 Jun 28:1-7. [Epub ahead of print].

    Wang F*, Kaplan JL*, Gold BD, Bhasin MK, Ward NL, Kellermayer R, Kirschner BS, Heyman MB, Dowd SE, Cox SB, Dogan H, Steven B, Ferry GD, Cohen SA, Baldassano RN, Moran CJ, Garnett EA, Drake L, Otu HH, Mirny LA, Libermann TA, Winter HS, Korolev KS. Detecting Microbial Dysbiosis Associated with Pediatric Crohn Disease Despite the High Variability of the Gut Microbiota. Cell Rep. 2016;14:945-55.

    Moran CJ, Kaplan JL, Winter HS, Masiakos PT. Occult blood and perianal exam: value added in pediatric inflammatory bowel disease screening. J Pediatr Gastroenterol Nutr. 2015;6:52-55.

    Russell GH, Kaplan JL, Youngster I, Baril-Dore M, Schindelar L, Hohmann E, Winter HS. Fecal transplant for recurrent Clostridium difficile infection in children with and without inflammatory bowel disease. J Pediatr Gastroenterol Nutr. 2014;58(5):588-592. PMID: 24792627

    Koukos G, Polytarchou C, Kaplan JL, Morley-Fletcher A, Gras-Miralles B, Kokkotou E, Baril-Dore M, Pothoulakis C, Winter HS, Iliopoulos D. MicroRNA-124 Regulates STAT3 Expression and is Downregulated in Colon Tissues of Pediatric Patients with Ulcerative Colitis. Gastroenterology. 2013;145(4):842-853.

    Kaplan JL, Walker WA. Early gut colonization and subsequent obesity risk. Curr Opin Clin Nutr Metab Care. 2012;15(3):278-284

Reviews: Comments and Ratings

5.0out of 5(49 Ratings, 17 Comments)

July 2025

Dr. Kaplan always takes the time to sit and talk and explain. He truly cares about me as a human being. I can tell and he's always fully aware of everything going on with me. He makes me feel cared about and never ever rushed.


July 2025

Kind and thorough. Makes me feel that my diagnosed isn't going to hinder me


July 2025

Dr Kaplan was very caring, explained everything & listened to all our concerns. He made sure we left with the formula we needed and even helped book us a follow up appointment at a different location that is closer to our home.


July 2025

Dr. Kaplan is an amazing doctor. My son's case is a little complex because he struggles with OCD and he listened and he got all the points that we wanted to get across and he tied it all together and he came up with a great plan and made my son feel so comfortable and positive and gave us hope that we can figure out everything that's going on. I ... Read More


May 2025

We love Dr.Jess! He is the BEST! He was running over with a previous patient but as I always say "he is worth the wait"


May 2025

Dr. Kaplan was very informative and took his time to understand exactly our concerns about the procedure and helped educate us on that procedure, answered all the questions that we had. And what we liked most was that he absolutely took his time in explaining what was really important to us instead of feeling rushed through it, which he did not do ... Read More


April 2025

Dr Kaplan is extremely knowledgeable, friendly and easy to talk to


March 2025

Our experience at Dr.Kaplan's office has been exceptionally good. Dr. Kaplan & his staff are extremely supportive, polite and caring.


March 2025

Dr. Kaplan was wonderful and put me at ease regarding my daughters issues during the appointment.


March 2025

Dr. Kaplan was easy to talk to, explained things so that I understood, and was very personable. I feel confident that my child's condition will improve under his care. I felt relieved after our appointment that things would improve for my daughter.

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