Dr. Singh’s passion for medicine and healthcare equality led him to pursue a Master in Public Health in addition to his Medical Degree. He strongly believes in treating a patient as a whole, not just the disease. This involves being very detail oriented and patient — meticulously considering the patient’s circumstances and surroundings and communicating effectively with the family.

“Input from all caregivers is very important to a child’s care — to understand the complete picture and implement treatments effectively.”

It is also important to Dr. Singh to speak directly to and connect with his young patients. “Children are incredibly smart and impressionable. My treatment plans often include therapies that address diet and lifestyle, and these work best when you reach the child at their level.”

Dr. Singh treats numerous diseases that affect the digestive tract, including inflammatory bowel disease, eosinophilic esophagitis and failure to thrive, with a special focus on celiac disease. “Early detection and treatment of celiac disease are key to optimize a child’s growth potential, avoid nutritional deficiencies, allow faster intestinal healing, as well as reduce the risk of other autoimmune conditions from developing.”

In addition to his clinical practice, Dr. Singh also routinely performs endoscopies, which enable him to directly visualize the digestive tract to help with accurate diagnosis and implement local treatments.

He is also involved in numerous research initiatives aimed at furthering our understanding of celiac disease and developing new therapies for his patients. “We are increasingly unraveling the role of the human genome and microbiome in digestive conditions. The large patient base we serve at CHOP and our commitment to research put us at the forefront of medical breakthroughs, and I am so excited to be a part of it.”

Education and Training

Medical School

MD - Jefferson Medical College, Thomas Jefferson University, Philadelphia, PA


Social Pediatrics - Children's Hospital at Montefiore - Albert Einstein College of Medicine, Bronx, NY


Pediatric Gastroenterology, Hepatology and Nutrition - Columbia University Medical Center - New York Presbyterian Hospital, New York, NY

Board Certification

Pediatric Gastroenterology – American Board of Pediatrics
Pediatrics – American Board of Pediatrics

Graduate Degree

MPH - Jefferson College of Population Health, Thomas Jefferson University, Philadelphia, PA

Titles and Academic Titles

Attending Physician

Co-Director, Center for Celiac Disease

Research Program DIrector, Center for Celiac Disease

Assistant Professor of Clinical Pediatrics (Gastroenterology, Hepatology and Nutrition), Perelman School of Medicine at the University of Pennsylvania

Conditions Treated

Departments and Services




Erin Alexander, Marisa Stahl, Amy Weaver, Janaki Devara, Lisa M Fahey, Arunjot Singh, Maureen M Leonard, Vanessa Weisbrod, Mary Shull, Jocelyn Silvester, Zachary Kramer, Benny Kerzner, Edwin Liu, Imad Absah: The Spectrum of Duodenal Histologic Findings in Patients With Trisomy 21: A Multicenter Study. Journal of Pediatric Gastroenterology, Hepatology, and Nutrition August 2023.


Payne, K, Ramharack L; Bierly P, Feigenbaum K, Steinhoff J, Hlywiak K, Farrara A, Verma R, Singh A, Fahey L: Repeat Biopsy to Assess Duodenal Healing in Children With Celiac Disease and Eosinophilic Gastrointestinal Disorders. JPGN Reports 2(3): E097, August 2021.


Do C, Dumont E; Salas M, Castano A, Mujahed H, Maldonado L, Singh A, DoSilva-Arnold S, Bhagat G, Lehman S, Christiano A, Madhavan S, Nagy P, Green PH, Feinman R, Trimble C, Illsley NP, Marder K, Honig L, Monk C, Goy A, Chow K, Goldlust S, Kaptain G, Siegel D, Tycko B: Allele-specific DNA methylation is increased in cancers and its dense mapping in normal plus neoplastic cells increases the yield of disease-associated regulatory SNPs. Genome Biology 21(11): 153, June 2020.


Singh A, Wilkinson S, Braganza S: Smartphones and Pediatric Apps to Mobilize the Medical Home. Journal of Pediatrics 165(1): 606-610, September 2014.


Singh A, Epstein E, Myers LM, Farmer JM, Lynch DR: Clinical Measures of Dysarthria in Friedreich Ataxia. Movement Disorders 25(1): 108-111, January 2010.



Singh A, Lusman S: Peritonitis. The 5-Minute Pediatric Consult. LWW, 8, 2018.



Arunjot Singh, Chris A. Liacouras: Pyloric Stenosis and Other Congenital Anomalies of the Stomach. Nelson Textbook of Pediatrics. Robert M. Kliegman, Joseph W. St. Geme III (eds.). 22nd Edition, 2024* Notes: Book chapter - accepted for publication (scheduled for 2024).


Singh A, Nobel Y, Krisonareddy S, and Green PH: Celiac Disease: Autoimmunity, Infectious Links and the Microbiome. Chapter in Textbook: Gastrointestinal Diseases and Their Associated Infections. Guy D. Eslick (eds.). Elsevier, 2019.

Arunjot Singh, Sarah Lusman: Peritonitis. The 5 Minute Pediatric Consult. Michael D. Cabana (eds.). 2019 Notes: Peritonitis chapter in 5-Minute Pediatric Consult, 8th edition

Posters and Presentations


Daneshdoost S, Adams K, Cooper M, Timko A, Weaver L, Seidman C, Peebles R, Singh A: Linking the Susceptibility & Coexistence of Celiac Disease and Eating Disorders. North American Society for Pediatric Gastroenterology, Hepatology and Nutrition Conference, San Diego, CA October 2023.

Feigenbaum K, Meighan S, Suresh R, Singh A, Fahey LM,  Marks B: Quality of Life in Youth with Type 1 Diabetes and Celiac Disease. International Society for Pediatric and Adolescent Diabetes Conference, Rotterdam, Netherlands  October 2023.


Boldizar L, Larsen E, Singh A, Stewart M, Wittlieb-Weber C: Promoting a Culture of Wellness by Reducing Email Burden and Improving Email Etiquette. International Conference on Physician Health, Orlando, FL October 2022.

Singh A, Silvester J, Turner J, Absah I, Sparks BA, Walsh CM, Bracken JM, Sanisz J, Hajjat T, Badalyan V, Chugh A, Hoffenberg E, Dowhaniuk J: State of Pediatric Celiac Disease Practice in North America. North American Society of Pediatric Gastroenterology, Hepatology, and Nutrition Annual Conference October 2022.


Coughlin P, Fusillo S, Fahey L, Baldassano R, Singh A: Double Trouble: Characterizing Coexistent Inflammatory Bowel Disease and Celiac Disease in a Single Center Pediatric Cohort. North American Society of Pediatric Gastroenterology, Hepatology and Nutrition Conference December 2021.

Invited Lectures

Singh A. "Celiac Disease in North America: What is the Current Practice of Pediatric Gastroenterology Providers" - Harvard Medical School Celiac Research Conference. Boston, Massachusetts. Dec 2023.

Singh A. "Life as a Gastroenterologist and Celiac-ologist" Medic Mindset Conference - Duke Kunshan University - Kunshan, China. Nov 2023.

Awards and Honors

2017, Oberfield Research Award in Translational Science – Department of Pediatrics, Columbia University Medical Center
2017, Sanofi Innovations Award Grant Recipient - Co-Investigator
2016, Research Poster of Distinction - World Congress of Pediatric Gastroenterology
2015-2017, Seidenberg Family Foundation Training Stipend - Funding for Celiac Epigenetics Research
2014, Eastern Society for Pediatric Research Travel Award
2014, Chairman's Award for Distinction in Research, Children’s Hospital at Montefiore - Albert Einstein College of Medicine
2012, Teaching & Tomorrow Program Travel Grant, North American Society for Pediatric Gastroenterology, Hepatology and Nutrition
2010-2011, Hobart Amory Hare Honor Society, Jefferson Medical College

Editorial and Academic Positions

Editorial Positions

2023-present, Peer Reviewer, Digital Health
2020-present, Peer Reviewer, Journal of Pediatric Gastroenterology, Hepatology, and Nutrition

Academic and Institutional Committees

2023-present, GI Team Lead, Infliximab and Infusion Therapy Plan Committee
2019-present, Physician Representative, Operations Improvement Committee Meeting
2019-present, EPIC Super User Committee
2018-present, Member & Committee Leader, GI Division Physician Wellbeing Committee

Leadership and Memberships

Memberships in Professional Organizations


2015-present, North American Society for the Study of Celiac Disease (NASSCD)
2014-present, North American Society for Pediatric Gastroenterology, Hepatology and Nutrition
 - 2023-2024, Celiac Disease Significant Interest Group, Vice Chair
 - 2022-present, Technology Committee
 - 2017-present, Clinical Care and Quality Committee


2016-present, American Gastroenterology Association (AGA)
2015-present, American College of Gastroenterology (ACG)
2011-present, American Academy of Pediatrics (AAP)
2010-present, American Association of Physicians of Indian Origin (AAPI)