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.

Certification: Pediatrics, Pediatric Gastroenterology.

Interests

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

Services and Specialties

Gastroenterology GI, Neurogastroenterology and Motility Disorders, Colorectal Disorders

Interests

Pediatric neuro-gastroenterology and motility disorders.

Research Areas

Gastroenterology Hepatology and Nutrition

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

Manometric findings in children with eosinophilic esophagitis and persistent post-remission dysphagia. Yogev, D; Dorfman, L; Mansi, S; El-Chammas, K; Lyles, J; Mukkada, V; Kaul, A. 2024; 5:289-295.

High prevalence of gastrointestinal disorders in a large cohort of patients with joint hypermobility. Sood, V; Kaul, A; El-Chammas, KI; Mukkada, VA; Sun, Q; Fei, L; Santucci, NR. Journal of Pediatric Gastroenterology and Nutrition. 2024; 79:42-47.

Exploring Diagnostic Priorities: The Role of Colonic Manometry in Evaluating Pediatric Patients with Intractable Idiopathic Constipation Prior to Sacral Nerve Stimulation. Dorfman, L; El-Chammas, K; Singh, A; Fei, L; Mansi, S; Santucci, NR; Kaul, A. Children. 2024; 11.

Sacral nerve stimulation effect on colonic motility in pediatric patients. Dorfman, L; Sigal, A; El-Chammas, K; Mansi, S; Kaul, A. The Saudi Journal of Gastroenterology. 2024; 30:236-242.

Colonic manometry: Still an important modality in pediatric Hirschsprung disease. Dorfman, L; Kaul, A; El-Chammas, K. Journal of Pediatric Gastroenterology and Nutrition. 2024; 78:1205-1206.

Diagnostic yield of left-sided colonic manometry in identifying colonic dysmotility in pediatric patients. Dorfman, L; El-Chammas, K; Brijawi, O; Fei, L; Mansi, S; Kaul, A. Neurogastroenterology and Motility. 2024; 36:e14759.

Pediatric retrograde cricopharyngeal dysfunction diagnosed by high-resolution impedance manometry. Dorfman, L; El-Chammas, K; Mansi, S; Graham, K; Kaul, A. Journal of Pediatric Gastroenterology and Nutrition. 2024; 78:1098-1107.

Su1645 PENFS IMPROVES WEIGHT AND OTHER ANTHROPOMETRIC OUTCOMES IN CHILDREN AND ADOLESCENTS WITH FUNCTIONAL DYSPEPSIA AND CONCURRENT AVOIDANT RESTRICTIVE FEEDING INTAKE DISORDER. Santucci, NR; Waheed, U; El-Chammas, K; Li, J; VonAxelson, A; Mansi, S; Graham, K; Hardy, J; Miller, MM; Sahay, RD. Gastroenterology. 2024; 166:s-779.

Su2048 REPEATED AURICULAR PERCUTANEOUS ELECTRICAL NERVE FIELD STIMULATION (PENFS) IN PEDIATRIC PATIENTS WITH DISORDERS OF GUT-BRAIN INTERACTION. Dorfman, L; Graham, K; El-Chammas, K; Sahay, RD; Hardy, J; Kaul, A; Santucci, NR. Gastroenterology. 2024; 166:s-906.

Tu2041 AURICULAR ALLODYNIA IS ASSOCIATED WITH WORSE OUTCOMES IN CHILDREN AND ADOLESCENTS WITH DGBI UNDERGOING NEUROSTIMULATION. Santucci, NR; Waheed, U; El-Chammas, K; Li, J; Mansi, S; Graham, K; Hardy, J; Miller, MM; Sahay, RD. Gastroenterology. 2024; 166:s-1503-s-1504.

From the Blog

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

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
Blog Rare and Complex Conditions

My Son With Debilitating Functional Abdominal Pain Heads to College

By Joey Molitor3/11/2019

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4.6
Overall Patient Rating