Jason W. Harper
Clinical Associate Professor
Director, Harborview Inflammatory Bowel Disease Program
Division of Gastroenterology

Faculty Information


Dr. Harper is the director of the Harborview Medical Center Inflammatory Bowel Disease program, and is a UW clinical assistant professor. He earned his M.D. from Columbia University, and did his internal medicine and gastroenterology training at the University of Washington. He is a member of the Crohn's and Colitis Foundation, and is presently on the regional Medical Advisory Committee.

Dr. Harper's clinical interests include inflammatory bowel diseases (ulcerative colitis and Crohn's disease) His research interests include clinical outcomes in IBD.

Board Certifications:

  • Gastroenterology, 2014, American Board of Internal Medicine
  • Internal Medicine, 2011, American Board of Internal Medicine
Education & Training: 
Fellowship in Gastroenterology
University of Washington
Residency in Internal Medicine
University of Washington
Internship in Internal Medicine
University of Washington
Medical Education
Columbia University
Research & Clinical Interests
Clinical Interests: 
  • Gastroenterology (Digestive)
  • Inflammatory Bowel Disease (IBD)
  • Telehealth Services
Lee SD, Singla A, Harper J, Barahimi M, Jacobs J, Kamp KJ, Clark-Snustad KD. Tofacitinib is safe and effective as monotherapy or in combination with biologic therapy for refractory Crohn’s disease. Inflammatory Bowel Diseases; in review.
Harper, J. Health Maintenance in Patients with Ulcerative Colitis. Gastroenterology Clinics of North America. 2020 Dec 49(4): 809-820.
Swanson SM, Harper J, Zisman TL. Obesity and inflammatory bowel disease: diagnostic and therapeutic implications. Current Opinions in Gastroenterology 2018; 34(2): 112-19.
Harper JW, Zisman TL. Interaction of obesity and inflammatory bowel disease. World Journal of Gastroenterology 2016 Sep 21; 22(35): 7868-81.
Harper JW, Welch MP, Sinanan MN, Wahbeh GT, Lee SD. Co-morbid diabetes in patients with Crohn’s disease predicts a greater need for surgical intervention. Alimentary Pharmacology and Therapy. 2012 Jan; 35(1): 126-32.
Green PH, Yang J, Cheng J, Lee AR, Harper JW, Bhagat G. An Association Between Microscopic Colitis and Celiac Disease. Clinical Gastroenterology and Hepatology. 2009 Nov; 7(11): 1210-6.
Bhagat G, Naiyer AJ, Shah JG, Harper J, Jabri B, Wang TC, Green PH, Manavalan JS. Small intestinal CD8+TCRγδ+NKG2A+ intraepithelial lymphocytes have attributes of regulatory cells in patients with celiac disease. Journal of Clinical Investigation. 2008 Jan; 118(1): 281-93.
Harper JW, Holleran SF, Ramakrishnan R, Bhagat G, Green PH. Anemia in celiac disease is multifactorial in etiology. American Journal of Hematology. 2007 Nov; 82 (11): 996-1000.