Skip to main content
Ramnik Xavier, MD, Gastroenterology, Boston, MA, Massachusetts General Hospital

RamnikJosephXavierMD

Gastroenterology • Boston, MA

Associate Professor, Medicine, Massachusetts General Hospital, Harvard Medical School

Join to view full profile

Dr. Xavier is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Connect with other colleagues in the same hospital or clinic
  • Search all U.S. specialist profiles and refer a patient
  • Read the latest clinical news and earn CME/CEU credits

See Dr. Xavier's full profile

Already have an account?

Education & Training

  • Massachusetts General Hospital
    Massachusetts General HospitalFellowship, Gastroenterology, 1992 - 1996
  • Massachusetts General Hospital
    Massachusetts General HospitalResidency, Internal Medicine, 1990 - 1992
  • Massachusetts General Hospital
    Massachusetts General HospitalInternship, Internal Medicine, 1989 - 1990
  • University of Zimbabwe Huggins SOM
    University of Zimbabwe Huggins SOMClass of 1986

Certifications & Licensure

  • MA State Medical License
    MA State Medical License 1991 - 2025
  • American Board of Internal Medicine Gastroenterology

Awards, Honors, & Recognition

  • Fellow (AGAF) American Gastroenterological Association, 2010
  • Super Doctor SuperDoctors.com

Publications & Presentations

PubMed

Journal Articles

  • Investigating Fatigue in IBD Patients  
    Francis P Colizzo, Hamed Khalili, John J Garber, Ramnik J Xavier, Clinical Gastroenterology and Hepatology
  • Temporal Development of the Gut Microbiome in Early Childhood from the TEDDY Study  
    Richard E Lloyd, Marian Rewers, William Hagopian, Ramnik J Xavier, Nature
  • The Human Gut Microbiome in Early-Onset Type 1 Diabetes from the TEDDY Study  
    Ramnik J Xavier, Marian J Rewers, William A Hagopian, Nature
  • Join now to see all

Authored Content

  • Investigating Fatigue in IBD PatientsFebruary 2020

Press Mentions

  • Congrats to the 44 Mass General Investigators Named to the Highly Cited Researchers List for 2022
    Congrats to the 44 Mass General Investigators Named to the Highly Cited Researchers List for 2022December 8th, 2022
  • Congrats to the 44 Mass General Investigators Named to Clarivate Analytics’ Highly Cited Researchers List for 2022
    Congrats to the 44 Mass General Investigators Named to Clarivate Analytics’ Highly Cited Researchers List for 2022November 22nd, 2022
  • Bacterial Bullseye
    Bacterial BullseyeJuly 25th, 2022
  • Join now to see all

Grant Support

  • Administrative Core, Center Director, Enrichment ProgramNational Institute Of Diabetes And Digestive And Kidney Diseases2011–2012
  • Center For The Study Of Inflammatory Bowel DiseaseNational Institute Of Diabetes And Digestive And Kidney Diseases2008–2012
  • Research Training In Digestive DiseasesNational Institute Of Diabetes And Digestive And Kidney Diseases2011
  • Bioinformatics CoreNational Institute Of Allergy And Infectious Diseases2011
  • Toll-Like Receptors And The Intestinal EpitheliumNational Institute Of Diabetes And Digestive And Kidney Diseases2009–2011
  • Systems Biology Of Crohn'S DiseaseNational Institute Of Diabetes And Digestive And Kidney Diseases2008–2011
  • Role Of CARMA1 In Inflammatory Lung DiseaseNational Heart, Lung, And Blood Institute2008–2011
  • Genetics, Genes, And Pathways In Inflammatory Bowel Disease (IBD)National Institute Of Diabetes And Digestive And Kidney Diseases2009–2010
  • Intracellular Epithelial Sensors Of Intestinal BacteriaNational Institute Of Diabetes And Digestive And Kidney Diseases2009
  • Genomic Approaches To Host-Pathogen InteractionsNational Institute Of Allergy And Infectious Diseases2006–2009
  • SAM68 As Adaptor Molecule In T Cell Signal TransductionNational Institute Of Allergy And Infectious Diseases1997–2001

Professional Memberships

Hospital Affiliations

Dr. Ramnik Xavier, Dr. Ramnik Xavier, MD, Dr. R Xavier, Dr. Ramnik Joseph Xavier