- Centers & Specialties
- Clinical Interests
- Ulcerative colitis
- Crohn's disease
- Celiac disease
- Autoimmune disorders of the GI tract
- Gastrointestinal cancer
- Medical Education
- PhD, University of Groningen - Netherlands
- MD, University of Zimbabwe School of Medicine
- Residency, Massachusetts General Hospital
- Fellowship, Massachusetts General Hospital
- Board Certifications
- Boston: Massachusetts General Hospital
- Insurances Accepted
- Aetna Health Inc.
- AllWays Health (NHP) - ACD
- AllWays Health (NHP) - PBO
- Beech Street
- Blue Cross Blue Shield - Blue Care 65
- Blue Cross Blue Shield - Indemnity
- Blue Cross Blue Shield - Managed Care
- Blue Cross Blue Shield - Partners Plus
- BMC HealthNet Mass Health MCO/ACO
- Cigna (PAL #'s)
- Commonwealth Care Alliance
- Fallon Community HealthCare
- Great-West Healthcare (formally One Health Plan)
- Harvard Pilgrim Health Plan - other
- Harvard Pilgrim Health Plan - PBO
- Health Care Value Management (HCVM)
- Humana/Choice Care PPO
- Maine Community Health Options (MCHO)
- Medicare - ACD
- OSW - Connecticut
- OSW - Maine
- OSW - New Hampshire
- OSW - Rhode Island
- OSW - Vermont
- Private Health Care Systems (PHCS)
- Railroad Medicare - ACD
- Senior Whole Health
- Tufts Health Plan
- United Healthcare (non-HMO) - PBO
- Well Sense Pediatrics
Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.
- Patient Age Group
- Provider Gender
- Elected Member, American Association of Physicians
- Senior Associate Member, Broad Institute of MIT and Harvard
- Principal Investigator, Center for Computational and Integrative Biology
- Xavier RJ, Podolsky DK. Unraveling the pathogenesis of IBD. Nature 2007 Jul 26; 448(7152):427-34.
- Khor B, Gardet A, Xavier RJ. Genetics and pathogenesis of inflammatory bowel disease. Nature 2011 Jun 15; 474(7351):307-17.
A study led by investigators at Massachusetts General Hospital and other institutions has begun to elucidate how differences in the gut microbiome – the microbial population of the gastrointestinal tract – affect the immune response in healthy individuals.
A comprehensive analysis of changes in the intestinal microbial population during the first three years of life has revealed some of the impacts of factors such as mode of birth – vaginal versus cesarean section – and antibiotic exposure, including the effects of multiple antibiotic treatments.
A study led by MGH investigator Ramnik Xavier, MD, PhD, has found evidence that supports the hypothesis that early-life exposure to pathogens is beneficial to the development of the immune system and identifies interactions between bacterial species that may explain the increase in autoimmune and related disorders seen in western societies.
Researchers from the Broad Institute, Massachusetts General Hospital, and the DIABIMMUNE Study Group have identified a connection between changes in gut microbiota and the onset of type 1 diabetes.
This week, MIT and Massachusetts General Hospital (MGH) announce the launch of the Center for Microbiome Informatics and Therapeutics, a new interdisciplinary center dedicated to advancing the understanding of the microbiome’s role in human biology and harnessing this knowledge to develop treatments for related illnesses.
Ramnik Xavier, MD, chief of the MGH Gastrointestinal Unit and director of the MGH Center for the Study of Inflammatory Bowel Disease, was honored with the first Kurt J. Isselbacher Professorship in Medicine in the Field of Gastroenterology, an endowed professorship at Harvard Medical School.
A multi-institutional study led by investigators from MGH and the Broad Institute has identified how the intestinal microbial population of newly diagnosed Crohn's disease patients differs from that of individuals free of inflammatory bowel disease.
The Broad Institute and MGH are launching a new initiative to perform large-scale exome sequencing in inflammatory bowel disease.
MGH Hotline 01.08.09 Ramnik Xavier, MD, has assumed the position of chief of the Gastroenterology Division beginning Jan. 1.
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Boston, MA 02114-2696