A photo of Khalil El-Chammas.

Associate Director, Neurogastroenterology and Motility Center

Assistant Professor, UC Department of Pediatrics


Board Certified

My Biography & Research

Additional Languages

Arabic, French

Clinical Interests

Pediatric gastroenterology, hepatology and nutrition with a special focus on neuro-gastroenterology and motility disorders.

Research Interests

Pediatric neuro-gastroenterology and motility disorders.

Academic Affiliation

Assistant Professor, UC Department of Pediatrics


Gastroenterology GI, Gastroenterology, Neurogastroenterology and Motility Disorders, Colorectal Disorders

My Locations

My Education

MD: American University of Beirut School of Medicine, Beirut, Lebanon, 2003.

MS: Clinical and Translational Science, Medical College of Wisconsin, Milwaukee, WI, 2012.

Residency: Pediatrics, American University of Beirut Medical Center, Beirut, Lebanon, 2006.

Residency: Pediatrics, Duke University, Durham, NC, 2009.

Fellowship: Pediatric Gastroenterology, Children's Hospital of Wisconsin, Milwaukee, WI, 2012.

Certification: Pediatrics, Pediatric Gastroenterology.

My Publications

El-Chammas K, Williams SE, Miranda A. Disaccharidase Deficiencies in Children With Chronic Abdominal Pain. JPEN J Parenter Enteral Nutr. 2015 Jul 9.

El-Chammas KI, Rumman N, Goh VL, Quintero D, Goday PS. Rectal prolapse and cystic fibrosis. J Pediatr Gastroenterol Nutr. 2015 Jan;60(1):110-2.

Rumman N, Sultan M, El-Chammas K, Goh V, Salzman N, Quintero D, Werlin S. Calprotectin in cystic fibrosis. BMC Pediatr. 2014 May 29;14:133.

El-Chammas KI, Tipnis NA, Simpson PM, Sood MR. Colon high-resolution manometry: using pressure topography plots to evaluate pediatric colon motility. J Pediatr Gastroenterol Nutr. 2014 Oct;59(4):500-4.

Lerner DG, Li BU, Mamula P, Fishman DS, Kramer R, Goh VL, El-Chammas K, Pentiuk SP, Rothbaum R, Gurrum B, Rahhal RM, Goday PS, Vitola B. Challenges in meeting fellowship procedural guidelines in pediatric therapeutic endoscopy and liver biopsy. J Pediatr Gastroenterol Nutr. 2014 Jan;58(1):27-33.

El-Chammas K, Majeskie A, Simpson P, Sood M, Miranda A. Red flags in children with chronic abdominal pain and Crohn's disease-a single center experience. J Pediatr. 2013 Apr;162(4):783-7.

Vermilyea S, Slicker J, El-Chammas K, Sultan M, Dasgupta M, Hoffmann RG, Wakeham M, Goday PS. Subjective global nutritional assessment in critically ill children. JPEN J Parenter Enteral Nutr. 2013 Sep;37(5):659-66.

El-Chammas KI, Venkatasubramani N, Veith R, Sekhri N, Rhead W, Toriello HV, Goday PS. Pancreatic insufficiency in Toriello-Carey syndrome: report of a second patient. Am J Med Genet A. 2012 May;158A(5):1208-11.

Tipnis NA, El-Chammas KI, Rudolph CD, Werlin SL, Sood MR. Do oro-anal transit markers predict which children would benefit from colonic manometry studies? J Pediatr Gastroenterol Nutr. 2012 Feb;54(2):258-62.