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James Marion

James Marion
United States
Stuff About Me:

James F. Marion, MD AGAF is an Associate Clinical Professor of Medicine at the Icahn School of Medicine at Mount Sinai and an Attending Physician at Mount Sinai Hospital in New York City.  He is a member of several professional organizations including the American Gastroenterological Association, American College of Gastroenterology, and the Charaka Club of New York.


Dr. Marion received his undergraduate degree from the University of California at Berkeley and his medical degree from Columbia University College of Physicians and Surgeons.  He completed his residency in internal medicine at Presbyterian Hospital and his gastroenterology fellowship at Mount Sinai hospital, both in New York City.  He is board certified in both specialties.  He is a member of the Faculty Practice of Mount Sinai Medical Center and Director of Education for the The Leona M. and Harry B. Helmsley Charitable Trust Inflammatory Bowel Disease Center at Mount Sinai opening in 2014. Dr. Marion is active in medical student, medical resident and fellow education at the Mount Sinai.  He is an active clinical investigator currently involved in numerous clinical trials. He initiated and completed the first American clinical trial comparing chromoendoscopy to standard techniques for the detection of dysplasia in IBD.     

Dr. Marion has served on the national patient education committee for the Crohn’s and Colitis Foundation and the Admissions Committee of the Mount Sinai School of Medicine.  He has published several articles and abstracts on Crohn’s disease and ulcerative colitis.  He lectures widely on these topics to both physician and lay audiences.  He has published several book chapters on IBD and serves as a reviewer for the American Journal of Gastroenterology and Inflammatory Bowel Diseases.  He has served as a section editor for Inflammatory Bowel Diseases. He was awarded the Distinguished Physician’s Award from the Long Island Chapter of the Crohn’s & Colitis Foundation in 2010 and the Physician of the Year Award from Greater New York Chapter of the Crohn’s and Colitis Foundation in 2012.


Dr. Marion lives in Manhattan with his wife, Allison, two daughters Molly and Ella and their dog Ringo. 



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