Ian Holmes MD

Ian Holmes MD

TEL: 503-963-2707
FAX: 503-963-2802

“Everyone deserves to thoroughly understand their condition and treatment options. My goal as a specialist is to provide my patients with the knowledge and confidence to make informed decisions about their health.”

Dr. Holmes was drawn to Gastroenterology because of the longitudinal relationships with patients, the exciting advances in the field of therapeutic endoscopy, and the intellectual challenge of taking care of several interlinked organ systems. 

Dr. Holmes completed a therapeutic endoscopy fellowship at Thomas Jefferson University Hospital in Philadelphia, where he received advanced training in therapeutic EUS, ERCP, stenting of the gastrointestinal tract, endoscopic suturing, double-balloon enteroscopy, Barrett’s ablation, and other skills.

Dr. Holmes likes living in Portland because of the amazing food scene and the proximity to the great outdoors. When he isn’t working, Dr. Holmes enjoys hiking with his wife and son, camping, skiing, and watching his beloved Northwest sports teams. 

Other Activities

Member, American Gastroenterological Association

Member, American Society of Gastrointestinal Endoscopy

Member, American College of Gastroenterology


Fellowship, Advanced Endoscopy, Thomas Jefferson University Medical Center, Philadelphia, PA, 2021

Fellowship, Gastroenterology & Hepatology, University of California, San Francisco, San Francisco, CA, 2020

Internship & Residency, Stanford University Medical Center, Palo Alto, CA, 2017

MD, Weill Cornell Medical College, New York, NY, 2014

BS, Haverford College, Haverford, PA , 2010



Internal Medicine


Gastrointestinal Endoscopy Top Reviewer, Clinical Reviewer Category, 2021

Gastrointestinal Endoscopy Top Reviewer, New and Mentee Reviewer Category, 2020

Yale/Stanford Johnson & Johnson Global Health Scholars Program

Alpha Omega Alpha Honor Medical Society

Sarah O’Laughlin Foley Prize, Clinical Medicine

Portland Monthly Magazine, “Top Doctors,” 2023, 2024


Holmes I, Triadafilopoulos G, Jensen K, Friedland S. How good is good enough? Lymph node metastasis after endoscopic resection of a rectosigmoid polyp. Dig Dis Sci. 2015 Jul 2. PMID 26134989

Holmes I, Kim HG, Yang DH, Friedland S. Avulsion is superior to argon plasma coagulation of visible residual neoplasia during EMR of colorectal polyps (with videos). Gastrointest Endosc. 2016 Apr 11. PMID 27080417

Holmes I, Friedland S. Endoscopic mucosal resection versus endoscopic submucosal dissection for large polyps: A western colonoscopist’s view. Clin Endosc. 2016 Sep;49(5):454-456. PMID 27561263

Holmes I, Hing T, Friedland S. Combining endoscopic submucosal dissection and endoscopic mucosal resection to treat neoplasia in Barrett’s esophagus. Surg Endo. 2016 Dec;30(12):5330-5337. PMID 27071930

Holmes I, Kim HG, Yang DH, Friedland S. Response. Gastrointest Endosc. 2017 Jul;86(1):251-252. PMID 28610865

Yang J, Chen YI, Friedland S, Holmes I et al. Lumen-apposing stents versus plastic stents in the management of pancreatic pseudocysts: a large, comparative, international, multicenter study. Endoscopy. 2019 Nov; 51(11): 1035-1043. PMID 30536255

Chen YI, Yang J, Friedland S, Holmes I et al. Lumen apposing metal stents are superior to plastic stents in pancreatic walled-off necrosis: a large international multicenter study. Endosc Int Open. 2019 Mar;7(3):E347-E354. PMID 30834293

Holmes I, Ko MS, Kouanda A, Singh A, Nett A, Kathpalia P. Epiphrenic diverticula: an added source of complexity in achalasia management. Neurogastroenterol Motil. 2020 Mar;32(3) PMID 31777144