Mark D.

Derleth

MD

Biography

Mark Derleth, M.D., is a board-certified gastroenterologist at the University of Washington Medical Center (UWMC).  He sees patients in the Digestive Health Center and the Adult Cystic Fibrosis Clinic.

Dr. Derleth believes that good communication is a crucial part of providing good care to patients. He strives to understand patients’ concerns and expectations so that he can best assist them.

Dr. Derleth earned his MD at Boston University and did his internal medicine and gastroenterology training at the University of Washington.  He joined the UW faculty in 2013 and became the program director for the gastroenterology fellowship in 2020.  

Board Certifications

• Internal Medicine, 2009, American Board of Internal Medicine
• Gastroenterology, 2013, American Board of Internal Medicine

Education & Training

Fellowship in Gastroenterology
University of Washington
2013

Chief Residency in Internal Medicine
UW Medical Center
2010

Residency in Internal Medicine
University of Washington
2009

Medical Education
Boston University School of Medicine
2006

Clinical Interests

• Cystic fibrosis (CF)
• Colorectal cancer screening in CF 
• Distal intestinal obstruction syndrome (DIOS)
• Short bowel syndrome
• Malnutrition in gastrointestinal disease states

Publications