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As Assistant Professor of Surgery at Columbia University Medical Center. Mark Kiely, MD, FACS currently sees patients at the Division's ColumbiaDoctors Scarsdale, Bronxville and Tarrytown locations. 

Dr. Kiely offers expertise in the surgical management of common anorectal conditions, colon and rectal cancer, diverticulitis, inflammatory bowel disease, pelvic floor disorders, constipation and incontinence.

Dr. Kiely comes from an academic Colon and Rectal Surgery practice in Baystate Medical Center, Massachusetts where he was in practice for over five years. Dr. Kiely completed his Clinical Fellowship in Colon and Rectal Surgery at Cleveland Clinic Ohio in 2011 and General Surgery Residency training at the Medical College of Wisconsin in 2010.

His clinical interests encompass the whole of colorectal surgery including benign and malignant conditions, abdominal and pelvic, as well as anorectal procedures. He has specific expertise in robotic rectal cancer surgery, Crohn’s/inflammatory bowel disease management, sphincter sparing anal fistula surgery (LIFT) procedure and abdominopelvic reoperative surgery. He has a keen interest in research and is an author on numerous publications in peer-reviewed journals, published abstracts, oral presentations and book chapters.

In addition to focusing on clinical research, outcomes and education within the division of colorectal surgery, he will lead the incorporation of trans-anal procedures (Ta-TME) for the management of a variety of colorectal conditions at NewYork-Presbyterian/Columbia University Medical Center. He will also be the lead surgeon for the development of the Colorectal Program for NewYork-Presbyterian/Lawrence Hospital in Bronxville, NY.

Originally from Ireland, Dr. Kiely graduated from medical school at the University of Dublin, Trinity College in 1999. After receiving an Associate Fellowship Degree from the Royal College of Surgeons in Ireland in 2002, he then completed research at the Medical College of Wisconsin from 2002 to 2005 and finished a thesis on leptin, obesity and intestinal function in 2006 obtaining a post-graduate degree (MD) from his alma mater, Trinity College Dublin.