About

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

Certifications: Pediatrics, Pediatric Gastroenterology

Interests

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

Interests

Pediatric neuro-gastroenterology and motility disorders.

Additional Languages

Arabic, French

Insurance Information

Cincinnati Children's strives to accept a wide variety of health plans. Please contact your health insurance carrier to verify coverage for your specific benefit plan.

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Publications

Gastrointestinal Manifestations in Rubinstein-Taybi Syndrome. Abi Nassif, M; Kaul, A; Dorfman, L; El-Chammas, K. American Journal of Medical Genetics, Part A. 2026; 200(7):1491-1497.

0911 Characterization of Sleep Architecture and Other Sleep Biomarkers in Adolescents with Functional Abdominal Pain. Santucci, N; Shah, P; Dye, T; El-Chammas, K; Graham, K; Coghill, R; King, C. Sleep. 2026; 49(Supplement_1):a406-a406.

Tu1723 CHARACTERIZATION OF SLEEP ARCHITECTURE AND OTHER SLEEP BIOMARKERS IN ADOLESCENTS WITH FUNCTIONAL ABDOMINAL PAIN. Santucci, NR; Shah, P; Dye, T; El-Chammas, K; Graham, K; Coghill, R; King, C. Gastroenterology. 2026; 170(6):s-1974-s-1975.

Tu1723 CHARACTERIZATION OF SLEEP ARCHITECTURE AND OTHER SLEEP BIOMARKERS IN ADOLESCENTS WITH FUNCTIONAL ABDOMINAL PAIN. Santucci, NR; Shah, P; Dye, T; El-Chammas, K; Graham, K; Coghill, R; King, C. Gastrointestinal Endoscopy. 2026; 103(5):s-1974-s-1975.

The 9th International RASopathies Symposium. Castel, P; Schoyer, L; Stronach, B; Bogdanova, R; Bennett, AM; Blakeley, J; Bornhorst, M; Bowers, T; Brachmann, SM; Burkitt-Wright, E; Traylor, M; Weaver, KN; Yohe, M; Green, T. American Journal of Medical Genetics, Part A. 2026.

504 Characterization of Sleep Architecture and Other Sleep Biomarkers in Adolescents with Functional Abdominal Pain. Shah, P; Santucci, N; Dye, T; El-Chammas, K; Graham, K; Coghill, R; King, C. Journal of Pain. 2026; 41:106151.

277 Percutaneous Electrical Nerve Field Stimulation Improves Weight and Other Anthropometric Outcomes in Children and Adolescents with Functional Dyspepsia and Concurrent Avoidant Restrictive Feeding Intake Disorder. Waheed, U; El-Chammas, K; Li, J; Vonaxelson, A; Mansi, S; Graham, K; Hardy, J; Miller, M; Sahay, R; Santucci, N. Journal of Pain. 2026; 41:105924.

Safety and Efficacy of Pneumatic Balloon Dilation for Pediatric Achalasia-A Single-Center Experience. Abi Nassif, M; Kostandy, EGN; Fei, L; Dorfman, L; Santucci, NR; El-Chammas, K; Kaul, A. American Journal of Gastroenterology. 2026; 121(2):557-560.

Percutaneous Electrical Nerve Field Stimulation Improves Weight and Other Anthropometric Outcomes in Children and Adolescents With Functional Dyspepsia Who Restrict Their Oral Intake. Waheed, U; Vonaxelson, A; El-Chammas, K; Graham, K; Mansi, S; Hardy, J; Miller, MM; Sahay, R; Santucci, NR. Neurogastroenterology and Motility. 2026; 38(2):e70273.

Variability in antroduodenal and colonic manometry protocols across pediatric centers worldwide. Dorfman, L; El-Chammas, K; Fei, L; Kaul, A. Pediatric Research. 2025; 98(6):2311-2318.

From the Blog

Cincinnati Children’s Named an IB-Stim Center of Excellence
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Cincinnati Children’s Named an IB-Stim Center of Excellence

Khalil El-Chammas, MD, MS8/21/2024

My Son With Debilitating Functional Abdominal Pain Heads to College
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My Son With Debilitating Functional Abdominal Pain Heads to College

By Joey Molitor3/11/2019

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