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Office
55 Fruit St
Blk 4
Boston, MA 02114Phone+1 617-724-6007Fax+1 617-724-6832
Education & Training
- Massachusetts General HospitalFellowship, Gastroenterology, 1992 - 1996
- Massachusetts General HospitalResidency, Internal Medicine, 1990 - 1992
- Massachusetts General HospitalInternship, Internal Medicine, 1989 - 1990
- University of Zimbabwe Huggins SOMClass of 1986
Certifications & Licensure
- 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
- Development of an FKBP12-recruiting chemical-induced proximity DNA-encoded library and its application to discover an autophagy potentiator.Zher Yin Tan, Joel K A Adade, Xiebin Gu, Cody J S Hecht, Michael Salcius
Cell Chemical Biology. 2025-03-20 - The Ulcerative Colitis-Associated Gene NXPE1 Catalyzes Glycan Modifications on Colonic Mucin.Ranad Humeidi, Noriko Oshiro-Rapley, Xiebin Gu, Joon Soo An, Ashwin N Ananthakrishnan
Journal of the American Chemical Society. 2025-03-11 - Trajectories of microbiome-derived bile acids in early life - insights into the progression to islet autoimmunity.Santosh Lamichhane, Alex M Dickens, Tanja Buchacher, Evita Tianai Lou, Vincent Charron-Lamoureux
Medrxiv. 2025-02-24
Journal Articles
- Investigating Fatigue in IBD PatientsFrancis 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 StudyRichard E Lloyd, Marian Rewers, William Hagopian, Ramnik J Xavier, Nature
- The Human Gut Microbiome in Early-Onset Type 1 Diabetes from the TEDDY StudyRamnik J Xavier, Marian J Rewers, William A Hagopian, Nature
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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 2022December 8th, 2022
- Congrats to the 44 Mass General Investigators Named to Clarivate Analytics’ Highly Cited Researchers List for 2022November 22nd, 2022
- Bacterial BullseyeJuly 25th, 2022
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Grant Support
- GPCR biology in autoimmunity: bridging genetics to structure to decipher mechanisms of diseaseMASSACHUSETTS GENERAL HOSPITAL2024–2029
- GPCR biology in autoimmunity: bridging genetics to structure to decipher mechanisms of diseaseMASSACHUSETTS GENERAL HOSPITAL2024–2029
- GPCR biology in autoimmunity: bridging genetics to structure to decipher mechanisms of diseaseMASSACHUSETTS GENERAL HOSPITAL2024–2029
- GPCR biology in autoimmunity: bridging genetics to structure to decipher mechanisms of diseaseMASSACHUSETTS GENERAL HOSPITAL2024–2029
- Spatial and temporal resolution to dissect cellular circuits controlling intestinal physiology, immunity, and inflammatory pathologiesBROAD INSTITUTE, INC.2023–2028
- Spatial and temporal resolution to dissect cellular circuits controlling intestinal physiology, immunity, and inflammatory pathologiesBROAD INSTITUTE, INC.2023–2028
- Spatial and temporal resolution to dissect cellular circuits controlling intestinal physiology, immunity, and inflammatory pathologiesBROAD INSTITUTE, INC.2023–2028
- Spatial and temporal resolution to dissect cellular circuits controlling intestinal physiology, immunity, and inflammatory pathologiesBROAD INSTITUTE, INC.2023–2028
- Identification and Characterization of Microbial Metabolites in ImmunityBROAD INSTITUTE, INC.2022–2027
- Cardiovascular disease, metabolic syndrome, microbes and metabolites in FHSBROAD INSTITUTE, INC.2022–2026
- Determinants of inception of inflammation in inflammatory bowel diseasesMASSACHUSETTS GENERAL HOSPITAL2021–2026
- Determinants of inception of inflammation in inflammatory bowel diseasesMASSACHUSETTS GENERAL HOSPITAL2021–2026
- Determinants of inception of inflammation in inflammatory bowel diseasesMASSACHUSETTS GENERAL HOSPITAL2021–2026
- Determinants of inception of inflammation in inflammatory bowel diseasesMASSACHUSETTS GENERAL HOSPITAL2021–2026
- Center for the Study of Inflammatory Bowel Disease at Massachusetts General HospitalMASSACHUSETTS GENERAL HOSPITAL1997–2026
- Center for the Study of Inflammatory Bowel Disease at Massachusetts General HospitalMASSACHUSETTS GENERAL HOSPITAL1997–2026
- 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
- Fellow
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