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Peter E. Darwin, MD

Academic Title:


Primary Appointment:


Additional Title:

Director, GI Endoscopy


UMMC, Room N3W62

Phone (Primary):

(410) 328-8729


(410) 328-8315

Education and Training


1986  B.S., Zoology, University of Maryland College Park, Maryland (Cum Laude)

1990  M.D., University of Maryland School of Medicine

Post Graduate Education and Training

1990-1991  Internship, Internal Medicine, University of Maryland School of Medicine

1991-1993  Residency, Internal Medicine, University of Maryland School of Medicine

1993-1995  Fellowship, Gastroenterology, University of Maryland School of Medicine


Dr. Darwin’s clinical focus is endoscopy, allowing for both the diagnosis and therapy of GI disorders. He performs Endoscopic Retrograde CholangioPancreatography  (ERCP), Spyglass cholangioscopy and Endoscopic Ultrasound (EUS) for the diagnosis and treatment of bile duct stones, cancer of the pancreas and bile ducts, evaluation of jaundice, acute and chronic pancreatitis with complications and benign/inflammatory bile duct strictures. EUS is also utilized for staging of esophageal, gastric and rectal cancers, evaluation of submucosal lesions, fine needle aspiration to obtain tissue and EUS directed therapy. Dr. Darwin performs upper endoscopy and colonoscopy for removal of difficult polyps, control of bleeding and enteral stenting. Dr. Darwin also performs balloon enteroscopy, a method employed to allow access and therapy to the distal small intestine.

Dr. Darwin’s research stems from his endoscopic focus. The most recent projects include evaluation of different needle types for liver biopsy, limiting radiation exposure during ERCP and evaluation of neuroendocrine tumors of the pancreas. Additional projects and clinical efforts are done in conjunction with the UMMS multi-disciplinary GI oncology board for both GI and liver cancers.

Highlighted Publications

Uradomo L, Goldberg E, Darwin P. Time-limited fluoroscopy to reduce radiation exposure during ERCP: a prospective randomized trial, Gastrointestinal Endoscopy 2007; 66:84-9.

Uradomo L, Darwin P. Evaluation of subepithelial abnormalities of the appendix by endoscopic ultrasound. Diagn Ther Endosc 2009 Nov 12: 295379.

Darwin P, Goldberg E, Uradomo L. Jackson Pratt fluid to serum bilirubin concentration ratio for the diagnosis of bile leaks. Gastrointestinal Endoscopy 2010;71(1):99-104.

Laczek J, Flaser M, Goldberg E, Darwin P. Contrast does not affect cholangioscope image quality. Gut Liver 2011; Mar 5(1):116-6.

Sharaiha RZ, Tyberg A, Khashab MA, Siddiqui UD, Darwin P, et. al. Endoscopic therapy with lumen-apposing metal stents is safe and effective for patients with pancreatic walled-off necrosis. Clin Gastroenterol Hepatol. 2016 May 14.pii: S1542-3565(16)30196-3.

Awards and Affiliations

Professional Society Membership

1992-2013: American College of Physicians

1998-present: American Society for Gastrointestinal Endoscopy

2001- 2014: AmericanCollege of Gastroenterology

2004-present: Maryland Society of Gastrointestinal Endoscopy

Honors and Awards

1985: Provost Scholar, University of MarylandCollege Park

1998-2013: Fellow of the American College of Physicians

2004-2009: Teaching Commendation in Pathophysiology and Therapeutics II, UMSOM

2008: Fellow of the American Society of GI Endoscopy

2008, 2012, 2013: “Baltimore’s Best” Gastroenterologist, Baltimore Magazine

2008: Certificate of Teaching Excellence in Functional Systems Small Group, UMSOM

2011, 2012: Super Doctor – Gastroenterologist, Super Doctors Washington Post