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David Asher Leiman

Associate Professor of Medicine
Medicine, Gastroenterology


Dr. Leiman is an Associate Professor of Medicine and gastroenterologist specializing in esophageal diseases and swallowing disorders, such as eosinophilic esophagitis (EoE), motility disorders such as achalasia, and gastroesophageal reflux disease (GERD) as well as its associated complications including Barrett’s esophagus (BE). His busy clinical practice dovetails with his academic focus on health services research, including patient outcomes and clinical quality measurement. He is also a PI for several ongoing multicenter clinical trials investigating novel therapies for EoE and GERD.

Dr. Leiman has mentored numerous medical students, residents, and GI fellows on research and quality improvement projects resulting in research awards, presentations at national meetings, and peer-reviewed publications.

Current Appointments & Affiliations

Associate Professor of Medicine · 2023 - Present Medicine, Gastroenterology, Medicine
Member in the Duke Clinical Research Institute · 2017 - Present Duke Clinical Research Institute, Institutes and Centers
Member of the Duke Cancer Institute · 2018 - Present Duke Cancer Institute, Institutes and Centers

Education, Training & Certifications

Vanderbilt University, School of Medicine · 2009 M.D.