Richard Kellermayer, MD, PhD


  • Texas Medical Center
  • West Campus



Gastroenterology, Hepatology and Nutrition

Phone: 832-822-3131 (Main) | 832-227-1440 (West)
Fax: 832-825-4131 (Main) | 832-825-9276

Contact Information

Texas Children's Hospital - Main Campus
6701 Fannin Street, Suite 1100
Houston, TX 77030
United States

Texas Children's Hospital - West Campus
18200 Katy Freeway, Suite 250
Houston, TX 77094
United States

Director of the Pediatric Inflammatory Bowel Disease Program

Texas Children's Hospital

Physician, Texas Children's Hospital

Associate Professor of Pediatrics, Baylor College of Medicine


School Education Degree Year
Texas Children's Hospital fellowship Pediatric Gastroenterology 2008
University Medical School of Pecs fellowship Medical Genetics 2005
University Medical School of Pecs postgraduate education Molecular & Human Genetics 2005
Women and Children's Hospital of Buffalo residency Pediatrics 2003
University Medical School of Pecs medical school Doctor of Medicine 1997


Dr. Kellermayer is the director of the Pediatric Inflammatory Bowel Disease (IBD) Program at Texas Children's Hospital (TCH), Baylor College of Medicine (BCM). He is a devoted pediatric gastroenterologist striving for outstanding patient care with special interest in IBD (including Crohn's disease and ulcerative colitis). Dr. Kellermayer is an expert in Clostridium difficile infection, and is the Medical Director of the Fecal Microbiota Transplantation (FMT) program at TCH. He is a passionate researcher with focus on the microbiome and the environmental (nutritional and epigenetic) origins of IBD. Dr. Kellermayer is also an avid teacher of multiple pre-and postgraduate students, and clinical fellows.

Selected Publications

Queliza K, Ihekweazu FD, Ali A, Kellermayer R. Inflammatory Bowel Disease and Immune Thrombocytopenic Purpura: Combined Immune Dysregulation in an Adolescent. Annals of Clinical & Laboraty Science 2017 Mar;47(2):226-228.

Shiau H, Ihekweazu FD, Amin M, Fofanova T, Miloh T, Kellermayer R. The Unique Inflammatory Bowel Disease Phenotype of Pediatric Primary Sclerosing Cholangitis: A Single Center Study. Journal of Pediatric Gastroenterology & Nutrition 2017 Jan 28.

Shah R, Cope JL, Nagy-Szakal D, Dowd S, Versalovic J, Hollister EB, Kellermayer R. Composition and function of the pediatric colonic mucosal microbiome in untreated patients with ulcerative colitis. Gut Microbes 2016 Sep 2;7(5):384-96.

Harris RA, Shah R, Hollister EB, Tronstad RR, Hovdenak N, Szigeti R, Versalovic J, Kellermayer R. Colonic Mucosal Epigenome and Microbiome Development in Children and Adolescents. Journal of Immunology Research 2016:9170162.

Kugathasan S,…., Kellermayer R, ….., Hyams JS, Dubinsky MC. Prediction of complicated disease course for children newly diagnosed with Crohn's disease: a multicentre inception cohort study. Lancet 2017 Apr 29;389(10080):1710-1718.

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