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Professional Statement

  • Dr. Abraham Khan is a gastroenterologist treating patients in New York City and the surrounding communities. His goal as a practitioner is to ensure that each of his patients receives the highest available quality of medical care.He is board certified in Internal Medicine and Gastroenterology. Dr. Khan is also a member of professional organizations including the American College of Gastroenterology, and the New York Society for Gastrointestinal Endoscopy.
  • For his undergraduate degree, Dr. Khan attended the University of Michigan. He pursued his medical degree at New York University. Dr. Khan continued his medical education at the New York University Elaine A. and Kenneth G. Langone Medical Center. Here, he received his internal medicine residency training and completed a fellowship program in gastroenterology.
  • Patients visiting Dr. Khan can receive a full range of gastroenterology services.Dr. Khan specializes in general gastroenterology and in the diagnosis and treatment of esophageal disease. Dr. Khan is highly trained in performing procedures such as colonoscopy and upper endoscopy (EGD), and diagnostic tests such as esophageal manometry and pH and impedance testing. In addition to his practice, Dr. Khan has participated in research into acid reflux and creating a mitochondrial protein database.


  • Medical School - New York University
  • New York University Elaine A. and Kenneth G. Langone Medical Center, Residency in Internal Medicine
  • New York University Elaine A. and Kenneth G. Langone Medical Center, Fellowship in Gastroenterology
  • University of Michigan (Bachelor’s)

Board Certifications

  • American Board of Internal Medicine
  • Gastroenterology (Internal Medicine)

Awards and Publications

  • Khan A, Ren-Fielding C, Traube M. Potentially reversible pseudoachalasia after laparoscopic adjustable gastric banding. J Clin Gastroenterol. 2011;45(9):775-9.
  • Ni J, Snyder A, Smukalla S, Park H, Jain A, Khan A, Cho I. Proton pump inhibitors significantly alter the taxonomic composition and butyrate production of the colonic microbiome. Poster Presentation at Digestive Disease Week 2011, Chicago, IL
  • Jain A, Smukalla S, Ni J, Khan A, Pandya N, Chtourmine N, Cho I. Variable recovery of the major phyla of the gut microbiome after colonoscopy bowel preparation. Poster Presentation at Digestive Disease Week 2011, Chicago, IL.
  • Khan A, Cho I, Traube M. Patients with throat symptoms on acid suppressive therapy: do they have reflux? Dig Dis Sci. 2010;55(2):346-50
  • Sunar-Reeder, B., Atha, D.H., Aydemir, S., Reeder, D.J., Tully, L., Khan, A.R., O’Connell C.D. Use of TP53 reference materials to validate mutations in clinical tissue specimens by single-strand conformational polymorphism analysis. Molecular Diagnosis 2004; 8(2): 123-30.

Professional Memberships

  • American College of Gastroenterology
  • New York Society for Gastrointestinal Endoscopy

Language Spoken

  • English