A photo of Khalil El-Chammas.

Associate Director, Neurogastroenterology and Motility Center

Associate 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

Associate Professor, UC Department of Pediatrics

Clinical Divisions

Gastroenterology GI, Neurogastroenterology and Motility Disorders, Colorectal Disorders

Research Divisions


Blog Posts

My Son With Debilitating Functional Abdominal Pain Heads to College

BlogRare and Complex Conditions

My Son With Debilitating Functional Abdominal Pain Heads to College

By Joey Molitor3/11/2019

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

Proceedings of the 2018 Advances In Motility and In NeuroGastroenterology: AIMING for the Future Single Topic Symposium. Ambartsumyan, L; Khlevner, J; Nurko, S; Rosen, R; Kaul, A; Pandolfino, JE; Ratcliffe, E; Yacob, D; Li, BU K; Punati, J; et al. Journal of Pediatric Gastroenterology and Nutrition. 2020; 71:e59-e67.

Characterization of the colonic response to bisacodyl in children with treatment-refractory constipation. Heitmann, PT; Wiklendt, L; Thapar, N; Borrelli, O; Di Lorenzo, C; Yacob, DT; Baaleman, DF; Vriesman, MH; Nurko, S; El-Chammas, K; et al. Neurogastroenterology and Motility. 2020; 32.

Esophageal dysmotility: An intrinsic feature of megacystis, microcolon, hypoperistalsis syndrome (MMIHS). Kocoshis, SA; Goldschmidt, ML; Nathan, JD; El-Chammas, KI; Bondoc, AJ; Tiao, GM; Alonso, MH; Ubesie, AC; Cole, CR; Kaul, A. Journal of Pediatric Surgery. 2019; 54:1303-1307.

Chronic Intestinal Pseudo-obstruction. El-Chammas, K; Sood, MR. Clinics in Colon and Rectal Surgery. 2018; 31:99-107.

Disaccharidase Deficiencies in Children With Chronic Abdominal Pain. El-Chammas, K; Williams, SE; Miranda, A. Journal of Parenteral and Enteral Nutrition. 2017; 41:463-469.