Ziad F. Gellad, MD

Associate Professor of Medicine
Member in the Duke Clinical Research Institute
Campus mail 2301 Erwin Road, Duke North - DUMC 3703, Durham, NC 27710
Phone (919) 668-7802
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, ZF, Almirall, D, Provenzale, D, and Fisher, DA. "Time from positive screening fecal occult blood test to colonoscopy and risk of neoplasia." GASTROENTEROLOGY 134, no. 4 (April 2008): A151-A152.


Gellad, ZF, Alexander, BD, Liu, JK, Griffith, BC, Meyer, AM, Johnson, JL, and Muir, AJ. "Severity of Clostridium difficile-associated diarrhea in solid organ transplant patients." Transpl Infect Dis 9, no. 4 (December 2007): 276-280.

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Gellad, ZF, and Lyles, KW. "Direct-to-consumer advertising of pharmaceuticals." Am J Med 120, no. 6 (June 2007): 475-480. (Review)

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Eisenstein, EL, Kong, DF, Anstrom, KJ, and Califf, RM. "In reply [5]." Journal of the American Medical Association 297, no. 16 (2007): 1770-1771.


van der Keyl, H, Gellad, ZF, and Owen, JA. "Disparity in the kinetics of onset of hypermutation in immunoglobulin heavy and light chains." Immunol Cell Biol 78, no. 3 (June 2000): 224-237.

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Owen, JA, van der Keyl, H, and Gellad, Z. "Disparity between the time of onset of heavy and light chain hypermutation." FASEB JOURNAL 13, no. 5 (March 15, 1999): A990-A990.