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Christopher DiMaio

  • ASSOCIATE PROFESSOR Medicine, Gastroenterology
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  • Gastroenterology


  • American Board of Internal Medicine


  • MD, State University of New York at Buffalo

  • Residency, Internal Medicine
    Thomas Jefferson University Hospital

  • Fellowship, Gastroenterology
    New York Presbyterian Hospital

  • Fellowship, Advanced Endoscopy
    Brigham and Women's Hospital, Harvard Medical School

  • Fellowship, Advanced Endoscopy
    Massachusetts General Hospital


    Christopher J. DiMaio, MD is the Director of Therapeutic Endoscopy. Dr. DiMaio’s clinical interests are in pancreatic disease, biliary disease, and pre-cancerous and cancerous lesions of the gastrointestinal tract (esophagus, stomach, small intestine, ampulla, colon, pancreas, bile ducts, liver). He specializes in advanced diagnostic and therapeutic endoscopic procedures, including endoscopic ultrasound (EUS), fine needle aspiration (FNA), endoscopic retrograde cholangiopancreatography (ERCP), luminal stent placement (esophagus, gastroduodenal, colonic), endoscopic mucosal resection and ablation, and complex polypectomy. His research focuses on patients with pancreatic cysts and pancreatic cancers, with a particular interest in using novel endoscopic techniques to diagnose and treat these lesions.

    Dr. DiMaio received his undergraduate degree from Cornell University, and his medical degree from SUNY at Buffalo School of Medicine. He completed his internal medicine training and served as chief medical resident at Thomas Jefferson University Hospital. He then completed fellowship training in gastroenterology at NewYork-Presbyterian Hospital/Columbia University Medical Center, followed by a fellowship in Advanced Endoscopy in the combined Massachusetts General Hospital/Brigham & Women’s Hospital/Harvard Medical School program. Prior to joining Mount Sinai, Dr. DiMaio served on the gastroenterology faculty at Memorial Sloan-Kettering Cancer Center for several years.


  • 2013 -
    Mount Sinai Endoscopy Preceptor of the Year
    Mount Sinai Hospital

  • 2008 -
    Dr. David B. Falkenstein Memorial Award for Endoscopic Research
    New York Society for Gastrointestinal Endoscopy

  • 2007 -
    Dr. David B. Falkenstein Memorial Award for Endoscopic Research
    New York Society for Gastrointestinal Endoscopy


New topic

Identification of biomarkers of dysplasia in pancreatic cystic neoplasms. 

Early detection of pancreatic malignancies.

Use of EUS-guided fine needle injection (EUS-FNI) for targeted therapy of GI malignancies.


DiMaio CJ, Dewitt JM, Brugge WR. Ablation of pancreatic cystic lesions: the use of multiple endoscopic ultrasound-guided ethanol lavage sessions.. Pancreas 2011; 40: 664-8.

Buscaglia JM, Ho S, Sethi A, DiMaio CJ, Nagula A, Stavropoulos SN, Gonda TA, Poneros JM, Stevens PD. Fully covered self-expandable metal stents for benign esophageal disease: a multicenter retrospective case series of 31 patients.. GastrointestEndosc 2011; 74: 207-11.

Mendelsohn RB, Gerdes H, Markowitz AJ, DiMaio CJ, Schattner MA. Carcinomatosis is not a contraindication to enteral stenting in selected patients with malignant gastric outlet obstruction.. GastrointestEndosc 2011; 73: 1135-40.

Gaujoux S, Brennan MF, Gonen M, D'Angelica MI, Dematteo R, Fong Y, Schattner M, DiMaio CJ, Janakos M, Jarnagin WR, Allen PJ. Cystic lesions of the pancreas: Changes in the presentation and management of 1,424 patients at a single institution over a 15-year time period.. J Am CollSurg 2011; 212: 590-600.

Ryou M, Mullady DK, DiMaio CJ, Swanson RS, Carr-Locke DL, Thompson CC. Pancreatic antegrade needle-knife (PANK) for treatment of symptomatic pancreatic duct obstruction in Whipple patients (with video) . . Gastrointestinal Endoscopy 2010; 72: 1081-8.

Dewitt J, DiMaio CJ, Brugge WR. Long term follow-up of pancreatic cysts that successfully resolve following endoscopic ultrasound -guided ethanol ablation.. Gastrointestinal Endoscopy 2010; 72: 862-86.

DiMaio CJ, Gerdes H, Kwon YM, Nash GM. Management of an iatrogenic ileal perforation by temporary transileostomy placement of fully covered esophageal self-expanding metal stent.. Gastrointestinal Endoscopy 2010; 73: 390-2.

DiMaio CJ, Nagula S, Goodman KA, Ho AY, Markowitz AJ, Schattner MA, Gerdes H. EUS-guided fiducial placement for image-guided radiation therapy in gastrointestinal malignancies using a 22-gauge needle (with video). Gastrointestinal Endoscopy 2010; 71: 1204-10.

Belletrutti PJ, DiMaio CJ, Gerdes H, Schattner MA. Endoscopic ultrasound guided biliary drainage in patients with unapproachable ampullae due to malignant duodenal obstruction.. Journal of Gastrointestinal Cancer 2010;.

Shen J, Brugge WR, DiMaio CJ, Pittman MB. Modular analysis of Pancreatic cyst fluid.. Cancer Cytopathology 2009; 117: 217-27.

Inraductal Polypoid Lipid-rich Neuroendocrine Tumor of The Pancreas with Entrapped Ductules: Case Report and Review of the Literature.. Endocrinology Pathology 2013;(24).

DiMaio CJ, Weis-Garcia F, Bagiella E, Tang LH, Allen PJ. Pancreatic cyst fluid concentration of high-mobility group A2 protein acts as a differential biomarker of dysplasia in intraductal papillary mucinous neoplasm.. Gastrointestinal Endoscopy 2015 Sep;.

Industry Relationships

Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device and biotechnology companies to improve patient care, develop new therapies and achieve scientific breakthroughs. In order to promote an ethical and transparent environment for conducting research, providing clinical care and teaching, Mount Sinai requires that salaried faculty inform the School of their relationships with such companies.

Below are financial relationships with industry reported by Dr. DiMaio during 2015 and/or 2016. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.


  • Beacon Endoscopic; Boston Scientific Corporation; Medtronic, Inc.

Industry-Sponsored Lectures: MSSM faculty occasionally give lectures at events sponsored by industry, but only if the events are free of any marketing purpose.

  • AbbVie Inc.; Medtronic, Inc.

Mount Sinai's faculty policies relating to faculty collaboration with industry are posted on our website. Patients may wish to ask their physician about the activities they perform for companies.

Insurance Information

Physicians who provide services at hospitals and facilities in the Mount Sinai Health System might not participate in the same health plans as those Mount Sinai hospitals and facilities (even if the physicians are employed or contracted by those hospitals or facilities).

Information regarding insurance participation and billing by this physician may be found on this page, and can also be obtained by contacting this provider directly. Because physicians insurance participation can change, the insurance information on this page may not always be up-to-date. Please contact this physician directly to obtain the most up-to-date insurance information.

Insurance and health plan networks that the various Mount Sinai Health System hospitals and facilities participate in can be found on the Mount Sinai Health System website.

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