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Bruce D. Greenwald, MD

Academic Title:


Primary Appointment:



UMMC, Room N3W62

Phone (Primary):

(410) 328-8731


(410) 328-8315

Education and Training

Dr. Greenwald completed his medical training at the University of Maryland School of Medicine magna cum laude in 1987. He completed Internal Medicine training at the University of Virginia Hospital, then returned to the University of Maryland to complete fellowship training in Gastroenterology. After serving as chief medical resident for one year, he joined the faculty of the University of Maryland School of Medicine in 1993.


As a gastroenterologist in the Division of Gastroenterology and Hepatology for over 20 years, I have clinical expertise in diagnosis, evaluation, and management of patients with gastrointestinal malignancies. My expertise in advanced diagnostic and therapeutic endoscopy, including endoscopic ultrasound with fine needle aspiration and biopsy, endoscopic tumor resection and ablation, and stenting provide a vital resource for diagnosis, staging, and endoscopic management of various malignancies. I am an active member of the thoracic oncology program, which fosters an interdisciplinary approach to management of esophageal malignancies. My research projects in esophageal cancer, including molecular pathogenesis, staging, and post-treatment assessment arose through collaboration with members of this program.  I have been involved in a number of successful research projects involving the collection of clinical specimens during endoscopy and have shepherded these projects from conception through IRB approval to execution

Research/Clinical Keywords

Esophageal cancer Esophageal adenocarcinoma Barrett's esophagus

Highlighted Publications

  1. Ghorbani S, Tsai FC, Greenwald BD, Jang S, Dumot JA, McKinley MJ, Shaheen NJ, Habr F, Coyle WJ. Safety and efficacy of endoscopic spray cryotherapy for Barrett's dysplasia: results of the National Cryospray Registry. Dis Esoph. 2015 Feb 24. doi: 10.1111/dote.12330. [Epub ahead of print] (PMID: 25708903).

  2. Khangura, S, Greenwald BD. Endoscopic Management of Esophageal Cancer after Definitive Chemoradiotherapy. Dig Dis Sci 2013; 58(6):1477-85 (PMID: 23325163).

  3. Gosain G, Mercer K, Twaddell W, Uradomo L, Greenwald BD. Liquid nitrogen spray cryotherapy in Barrett’s esophagus with high-grade dysplasia: long-term results. Gastrointest Endosc 2013 Aug;78(2):260-5. doi: 10.1016/j.gie.2013.03.002. Epub 2013 Apr 24. (PMID: 23622979).

  4. Halsey KD, Chang JW, Waldt A, Greenwald BD. Recurrent disease following endoscopic ablation of Barrett's high-grade dysplasia with spray cryotherapy. Endoscopy 2011; 43(10): 844-8 (PMID: 21826629).

Community Service

Dr. Greenwald serves on the board of the Esophageal Cancer Action Network (, an organization devoted to awareness, early detection, treatment, and research for esophageal cancer.