Ziad F. Gellad, MD

Associate Professor of Medicine
Core Faculty Member, Duke-Margolis Center for Health Policy
Member in the Duke Clinical Research Institute
Campus mail 2301 Erwin Road, Duke North - DUMC 3703, Durham, NC 27710
Phone (919) 668-1585
Email address ziad.gellad@duke.edu

Dr. Gellad is an associate professor of medicine in the Division of Gastroenterology at Duke University Medical Center and a faculty member of the Duke Clinical Research Institute.  He is also a VA Career Development Awardee and holds an appointment in the Health Services Research and Development Center of Innovation at the Durham VA Medical Center.  His research focuses on the implementation of systems engineering methods to improve the quality and value of health care delivery with a specific emphasis in colorectal cancer screening.

Dr. Gellad has also received several innovation grants to develop and implement novel information technology platforms to improve the patient and clinician experience.  He is also an active contributor to the innovation and entrepreneurship activities within Duke University and co-founder of a health technology startup in Durham.

Dr. Gellad received his MD and MPH degrees from Johns Hopkins University.  He completed a residency in internal medicine and a fellowship in gastroenterology at Duke University Medical Center.  He is the Director of Quality for the Division of Gastroenterology and Associate vice Chair for Clinical Innovation in the Department of Medicine at Duke University Medical Center.   Dr. Gellad is past-chair of the Quality Measures Committee of the American Gastroenterological Association, associate editor for GI & Hepatology News and is on the Board of Editors for Clinical Gastroenterology and Hepatology.

In Their Words

Education and Training

  • Fellow in Gastroenterology, Medicine, Duke University, 2006 - 2009
  • Medical Resident, Medicine, Duke University, 2003 - 2006
  • M.D., Johns Hopkins University, 2003
  • M.P.H., Johns Hopkins University, 2002


Gellad, Ziad F., Corrine I. Voils, Li Lin, and Dawn Provenzale. “Physician perceptions on colonoscopy quality: results of a national survey of gastroenterologists.” Gastroenterol Res Pract 2014 (2014): 510494. https://doi.org/10.1155/2014/510494.

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Taheri, J., Z. Gellad, D. Burchfield, and K. Cooper. “Simulation as a guide for systems redesign in gastrointestinal endoscopy: Appointment template redesign.” Proceedings of the 2013 Winter Simulation Conference  Simulation: Making Decisions in a Complex World, Wsc 2013, December 1, 2013, 2204–14. https://doi.org/10.1109/WSC.2013.6721597.

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Gellad, Ziad, Dariele Burchfield, Kevin Cooper, and Javad Taheri. “Impact of Propofol on Endoscopy Unit Efficiency: A Discrete Event Simulation Model.” In American Journal of Gastroenterology, 108:S593–S593. Ovid Technologies (Wolters Kluwer Health), 2013. https://doi.org/10.14309/00000434-201310001-01955.

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Gellad, Ziad F., Corrine I. Voils, Li Lin, and Dawn Provenzale. “Clinical practice variation in the management of diminutive colorectal polyps: results of a national survey of gastroenterologists.” Am J Gastroenterol 108, no. 6 (June 2013): 873–78. https://doi.org/10.1038/ajg.2012.316.

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Jackson, George L., Leah L. Zullig, S Yousuf Zafar, Adam A. Powell, Diana L. Ordin, Ziad F. Gellad, David Abbott, James M. Schlosser, Janis Hersh, and Dawn Provenzale. “Using NCCN clinical practice guidelines in oncology to measure the quality of colorectal cancer care in the veterans health administration.” J Natl Compr Canc Netw 11, no. 4 (April 1, 2013): 431–41. https://doi.org/10.6004/jnccn.2013.0058.

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Taheri, J., Z. Gellad, D. Burchfield, and K. Cooper. “A simulation study to reduce nurse overtime and improve patient flow time at a hospital endoscopy unit.” Proceedings  Winter Simulation Conference, December 1, 2012. https://doi.org/10.1109/WSC.2012.6465136.

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Chan, Johanna L., Li Lin, Michael Feiler, Andrew I. Wolf, Diana M. Cardona, and Ziad F. Gellad. “Comparative effectiveness of i-SCAN™ and high-definition white light characterizing small colonic polyps.” World J Gastroenterol 18, no. 41 (November 7, 2012): 5905–11. https://doi.org/10.3748/wjg.v18.i41.5905.

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