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Deanna Diemanh Nguyen, MD

My main clinical interest is in inflammatory bowel disease. I have a practice focused on the care of patients with Crohn's and ulcerative colitis. I also participate in clinical as well as basic research in inflammatory bowel disease.

  • Phone: 617-726-2047
Department of Medicine


  • Digestive Healthcare Center
  • Crohn's & Colitis Center
Clinical Interests
Ulcerative colitis
Crohn's disease
Inflammatory bowel disease
Celiac disease
Microscopic colitis
Boston: Massachusetts General Hospital
Medical Education
MD, Harvard Medical School
Residency, Massachusetts General Hospital
Fellowship, Massachusetts General Hospital
Board Certifications
Gastroenterology, American Board of Internal Medicine
Patient Gateway
Yes, learn more
Patient Age Group
Accepting New Patients
Accepting New Patients

ResearchI participate as a co- or sub-investigator in all the clinical trials at the MGH Crohn's & Colitis Center.  In addition, I study the role of different immune cells in the pathogenesis of inflammatory bowel disease.


View my most recent publications at PubMed

1. Nguyen D Are E. Coli the Culprit? Inflammatory Bowel Diseases. 2008;14(4):575-6.

2. Nguyen D. Thiopurines and Paternit - Is It Safe? Inflammatory Bowel Diseases. 2011;17(11):2402-3.

3. Nguyen D & Snapper SB. "Immunobiolog - T cell" in Baumgart D, editor, Croh's Disease and Ulcerative Colitis: From Epidemiology and Immunobiology to a Rational Diagnostic and Therapeutic Approach. 2012. New York: Springer.

4. Desai A, Zator ZA, de Silva P, Nguyen D, Korzenik J, Yajnik V, Ananthakrishnan AN. Older Age Is Associated with Higher Rate of Discontinuation of Anti-TNF Therapy in Patients with Inflammatory Bowel Disease. Inflamm Bowel Dis. 2013 Feb;19(2):309-15. PMID: 22605668.

5. Oxford EC, Nguyen D, Sauk J, Korzenik JR, Yajnik V, Friedman S, Ananthakrishnan AN. Impact of co-existent celiac disease on phenotype and natural history of Inflammatory Bowel Diseases. American Journal of Gastroenterology. 2013 epub Feb 19. PMID: 23419379.

6. Zator ZA, Cantu SM, Konijeti GG, Nguyen D, Sauk J, Yajnik V, Ananthakrishnan AN. Pretreatment 25-Hydroxyvitamin D Levels and Durability of anti-Tumor Necrosis Factor-a Therapy in Inflammatory Bowel Diseases. JPEN J Parenter Enteral Nutr. 2013 Oct 2. epub.

7. Nguyen D. "Management of Inflammatory Bowel Disease" In Goroll AH, Mulley AG, editors. Primary Care Medicine: Office Evaluation and Management of the Adult Patient, 7th ed. In press. Philadelphia: Lippincott Williams & Wilkins.

For basic research publications please click here.

Gastroenterology Assoc/Digestive Health Center
165 Cambridge Street
9th Floor
Boston, MA 02114

Phone: 617-726-2047
Fax: 617-726-3080