Education and Training
MD - Alpert Medical School of Brown University, Providence, RI
Pediatrics - Rainbow Babies and Children's Hospital, Cleveland, OH
Gastroenterology - The Children's Hospital of Philadelphia, Philadelphia, PA
Titles and Academic Titles
Assistant Professor of Clinical Pediatrics, Perelman School of Medicine at the University of Pennsylvania
- Abdominal Pain
- Acute Pancreatitis
- Allergic Disorders
- Autoimmune Enteropathy
- Carbohydrate Malabsorption
- Celiac Disease
- Colic and Gas
- Common Gastrointestinal Conditions
- Crohn's Disease
- Cyclic Vomiting
- Diarrhea in Children
- Eosinophilic Esophagitis (EoE)
- Feeding and Swallowing Disorders
- Food Protein-Induced Enterocolitis Syndrome (FPIES)
- Functional Abdominal Pain
- Gastroesophageal Reflux Disease (GERD)
- Gastrointestinal Congenital Anomalies
- Iron Deficiency Anemia
- Inflammatory Bowel Disease
- Irritable Bowel Syndrome in Children
- Motility Disorders
- Nutritional Disorders
- Pancreatic Disorders
- Small Bowel Bacterial Overgrowth
- Ulcerative Colitis
- Vomiting (Chronic)
Departments and Services
Sahn B, De Matos V, Stein R, Ruchelli E, Masur S, Klink AJ, Baldassano RN, Piccoli DA, Russo P, Mamula P.: Histological features of ileitis differentiating pediatric Crohn disease from ulcerative colitis with backwash ileitis. Digestive and Liver Disease 50(2): 147-153, February 2018.
Stein R, Plantz K, Maxwell EC, Mamula P, Baldassano RN: Intravenous iron sucrose for treatment of iron deficiency anemia in pediatric inflammatory bowel disease. Journal of Pediatric Gastroenterology and Nutrition 66(2): e51-e55, February 2018.
Conrad MA*, Stein RE*, Maxwell EC, Albenberg L, Baldassano RN, Dawany N, Grossman AB, Mamula P, Piccoli DA, Kelsen JR. Vedolizumab in severe pediatric inflammatory bowel disease. Inflamm Bowel Dis. 2016 Oct;22(10):2425-31. *Co-first authorship
Stein R, Lee D, Leonard MB, Thayu M, Denson LA, Chuang E, Herskovitz R, Kerbowski T, Baldassano RN. Serum infliximab, anti-drug antibodies, and tumor necrosis factor predict sustained response in pediatric Crohn disease. Inflamm Bowel Dis. 2016 June;22(6):1370-7.
Stein R, Chelimsky T, Li H, Chelimsky G: Functional gastrointestinal disorders in a primary care clinic. Global Pediatric Health 2: 1-9, 2015 Notes: doi: 10.1177/2333794X14568452.
Hamdy RF, Stein RE, Larru B, Bellah RD, Grossman AB, Hodinka RL, Feemster KA: Gallbladder wall thickening in an adolescent with acute mononucleosis: A case report and brief review of the literature. J Ped Infect Dis 4(3): 267-271, September 2015.
Stein R, Kachelries K, Sigall-Boneh R, Feigenbaum K, Weston S, Baldassano R, Levine A. Biological and immunomodulator withdrawal in pediatric Crohn’s disease patients in deep clinical remission using the Crohn’s disease exclusion diet. Digestive Disease Week. San Diego, CA. May 2019.
Stein RE, Liu Y, Chen Y, Baldassano RN. A comparison of infliximab monotherapy and concomitant immunomodulator therapy in pediatric Crohn disease. North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition Annual Meeting. Fort Lauderdale, FL. October 2018.
Fusillo S, Chang V, Stein RE, Maxwell EC, Conrad MA, Albenberg L, Grossman AB, Mamula P, Piccoli D, Baldassano RN, Kelsen JR. Ustekinumab responders versus non-responders in refractory pediatric inflammatory bowel disease. Digestive Disease Week. Washington, DC. June 2018.
Stein RE and Baldassano RN: Eosinophilic gastroenteritis. Nelson Textbook of Pediatrics. Kleigman RM, St Geme JW, Shah SS, Tasker RC, Wilson KM (eds.) Elsevier, 21st edition: 1987, 2020.
Stein RE and Baldassano RN: Inflammatory bowel disease. Nelson Textbook of Pediatrics. Kleigman RM, St Geme JW, Shah SS, Tasker RC, Wilson KM (eds.) Elsevier, 21st edition: 1973-86, 2020.
Stein RE and Baldassano RN: Dietary therapies for inflammatory bowel disease. Pediatric Inflammatory Bowel Disease. Mamula, P., Grossman, A.B., Baldassano, R.N., Kelsen, J.R., Markowitz, J.E (eds.). Springer, 3rd edition: 473-483, 2017.
Posters and Presentations
Stein R and Kelsen J. 2016. The heterogeneous presentation of pancreatitis in pediatric inflammatory bowel disease. Abstract for poster presentation at World Congress of Pediatric Gastroenterology, Hepatology, and Nutrition. Montreal, Canada.
Awards and Honors
2016, Research Poster Day Award, The Children’s Hospital of Philadelphia
2013, Science Day Resident Research Award, Rainbow Babies and Children's Hospital
2013, Third-Year Resident Teacher of the Year Award, Rainbow Babies and Children's Hospital
2012, Second-Year Resident Teacher of the Year Award, Rainbow Babies and Children's Hospital
2011, First-Year Resident Teacher of the Year Award, Rainbow Babies and Children's Hospital
Leadership and Memberships
Memberships in Professional Organizations
2013-present, North American Society for Pediatric Gastroenterology, Hepatology and Nutrition
2013-present, Crohn's & Colitis Foundation of America
2013-present, American Gastroenterological Association
Patient Experience Ratings
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