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.

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

Repeat round of auricular percutaneous electrical nerve field stimulation for pediatric disorders of gut brain interaction. Dorfman, L; El-Chammas, K; Graham, K; Sahay, R; Hardy, J; Kaul, A; Santucci, N. Journal of Pediatric Gastroenterology and Nutrition. 2025; 81:234-245.

Auricular Allodynia is Associated With Worse Outcomes in Children With Functional Abdominal Pain Disorders Using Neurostimulation. Santucci, NR; Waheed, U; Li, J; Mansi, S; Graham, K; Hardy, J; Miller, MM; Sahay, R; El-Chammas, K. Neuromodulation. 2025; 28:840-846.

725: PENFS IMPROVES GASTROINTESTINAL AND PSYCHOLOGICAL OUTCOMES IN CHILDREN AND ADOLESCENTS WITH ATTENTIONDEFICIT/HYPERACTIVITY DISORDER AND DISORDERS OF GUT-BRAIN INTERACTION. Waheed, U; Santucci, NR; El-Chammas, K; Mansi, SM; Graham, K; Hartman, L; Hardy, J; Miller, MM; Sahay, RD. Gastroenterology. 2025; 169:s-166-s-167.

Mo1706: AURICULAR NEUROSTIMULATION IMPROVES ABDOMINAL PAIN, NAUSEA, PSYCHOLOGICAL FUNCTIONING AND SLEEP IN PATIENTS OVER 18 YEARS OF AGE. VonAxelson, A; Waheed, U; El-Chammas, K; Hardy, J; Miller, MM; Sahay, RD; Fei, L; Santucci, NR. Gastroenterology. 2025; 169:s-1173-s-1174.

Sa2106: SAFETY AND EFFICACY OF PNEUMATIC BALLOON DILATION FOR PEDIATRIC ACHALASIA- A SINGLE CENTER EXPERIENCE. Nassif, MA; Kostandy, EG N; Dorfman, L; Fei, L; Santucci, NR; El-Chammas, K; Kaul, A. Gastroenterology. 2025; 169:s-652-s-653.

Sa2110: PENFS IMPROVES FUNCTIONAL PAIN AND PSYCHOLOGICAL OUTCOMES IN CHILDREN WITH ORTHOSTATIC INTOLERANCE. Santucci, NR; Waheed, U; El-Chammas, K; Mansi, SM; Graham, K; Hardy, J; Miller, MM; Sahay, RD; Fei, L. Gastroenterology. 2025; 169:s-653-s-654.

Sa1000: EFFECT OF INSURANCE APPROVALS AND DENIALS ON OUTCOMES WITH PERCUTANEOUS ELECTRICAL NERVE FIELD STIMULATION (PENFS) FOR PATIENTS WITH DISORDERS OF GUT-BRAIN INTERACTION (DGBI). Nassif, MA; Sahay, RD; El-Chammas, K; Graham, K; Hardy, J; Dahman, AR; Santucci, NR. Gastroenterology. 2025; 169:s-334-s-335.

Mo1001: SEX, AGE AND RACIAL DISPARITIES IN CHILDREN WITH DISORDERS OF GUT-BRAIN INTERACTION. VonAxelson, A; Waheed, U; El-Chammas, K; Graham, K; Austin, J; Hardy, J; Miller, MM; Sahay, RD; Fei, L; Santucci, NR. Gastroenterology. 2025; 169:s-973.

Sa2104: A SINGLE CENTER STUDY ON SIDE EFFECTS DURING PERCUTANEOUS ELECTRICAL NERVE FIELD STIMULATION FOR PEDIATRIC DISORDERS OF GUT-BRAIN INTERACTION. Waheed, U; Santucci, NR; El-Chammas, K; Mansi, SM; Graham, K; VonAxelson, A; Hardy, J; Miller, MM; Sahay, RD. Gastroenterology. 2025; 169:s-652.

Utility of Monitoring Fasting Phase During Pediatric Colonic Manometry Studies. Dorfman, L; El-Chammas, K; Khanna, S; Fei, L; Kaul, A. Neurogastroenterology and Motility. 2025; 37:e14998.

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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