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Thomas M Zarchy, MD
Associate Professor of Clinical Medicine
IRD 704 Health Sciences Campus Los Angeles
+1 323 442 5576


Dr. Zarchy's major areas of research interest are outcome studies regarding use of colonoscopy and sigmoidoscopy for finding advanced colon neoplasms; inflammatory bowel disease in low socioeconomic populations. Currently he is a Principal Investigator in an IRB approved study of the utility of rectal bleeding, +FOBT and iron deficiency anemia as indications of colonoscopy versus analysis of demographics and genetics of Roybal and IBD patients with regard to Crohns vs. UC and the severity of UC.

Dr. Zarchy earned his medical degree from George Washington University. He performed his residency at Veterans Administration Hospital and Georgetown University Hospital. He stayed on to complete his Gastroenterology and Hepatology Fellowship.


American Gastroenterology Association: Fellow, 2006

American College of Physicians: Fellow, 1998

MedPartners: Third Highest Patient Satisfaction Rating, 1995

George Washington University: Scholarship, 1969-1970

Digestive Disease Week: Moderator, 1996

New York Allergy Foundation: Summer Research Grant, 1970


Zarchy TM, Tsai F, Ramicone E, Chan LS. A risk profile for advanced proximal neoplasms on diagnostic colonoscopy. Dig Dis Sci. 2009 Jan; 54(1):151-9. View in: PubMed

Zarchy T. Colonoscopy screening in average-risk individuals ages 40-49 versus 50-59 years. Gastroenterology. 2008 Sep; 135(3):1016-7; author reply 1017. View in: PubMed

Zarchy TM, Pais S. Virtual colonoscopy to screen for colorectal cancer. N Engl J Med. 2004 Mar 11; 350(11):1148-50; author reply 1148-50. View in: PubMed

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