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Division of Pediatric Gastroenterology & Hepatology

The Division of Pediatric Gastroenterology, Hepatology and Nutrition offers comprehensive inpatient, outpatient and laboratory services to evaluate and treat infants, children and adolescents with gastrointestinal, liver and pancreatic disorders.

Programs and Areas of Expertise

Patient Conditions: Gastoesophageal reflux, Dysfunctional swallowing, Failure to thrive, inflammatory bowel disease, Peptic ulcer disease, Malabsorption, Pancreatic disorders, Neonatal jaundice, Chronic Liver Disease, Acute and chronic diarrhea, Constipation, Recurrent abdominal pain, Feeding disorders (eosinophilic esophagitis, autism), Eosinophilic gastroenteropathy, Celiac Disease, EOE (Eosinophilic Esophagitis)

Comprehensive Evaluations: Diagnostic and therapeutic endoscopic procedures, Breath analysis for detecting carbohydrate Malabsorption and bacterial overgrowth, 24-hour pH probe study, Manometry.

Infusion Therapy

Faculty and Staff

  • Atiye Nur Aktay, MD
    Assistant Professor, Pediatrics
  • Associate Professor; Division Head, Pediatric Gastroenterology and Nutrition;
    Pediatric Gastroenterology Fellowship Director
    Special Interest: Children with Liver Disease; Inflammatory Bowel Disease; Pediatric Endoscopy
  • Sarah Choi, CRNP
    Pediatric Nurse Practitioner
    Special Interest: General Pediatric Gastroenterology, Constipation/Encopresis
  • Steven J. Czinn, MD
    Professor and Chair, Pediatrics
    Special Interest: Mucosal Immunology; Gastrointestinal Infections; Helicobacter Pylori; Inflammatory Bowel Disease
  • Lina M. Diaz Calderon, MD
    Assistant Professor, Pediatrics
  • Jennifer S. Hong, MD, MPH
    Assistant Professor, Pediatrics
  • Howard Kader, MD
    Assistant Professor, Pediatrics
    Special Interest: Inflammatory Bowel Disease; Eosinophilic Esophagitis and other infectious and Noninfectious Intestinal Mucosal Inflammatory Disease Process
  • Ryann Mayer, RD, LDN 
    Pediatric Nutritionist 
    Special Interest: Pediatric Gastroenterology; nutritional therapy of IBD; Obesity; poor growth; EOE
  • Jay Perman, MD
    Professor, Pediatrics
    President; University of Maryland Baltimore
    Special Interests: General Pediatric Gastroenterology and Nutrition.
  • Elsie Stines, CRNP
    Pediatric Nurse Practitioner
    Special Interests: Pediatric Gastroenterology; Failure to Thrive; Inflammatory Bowel Disease; Constipation/Encoprisis
  • Runa D. Watkins, MD 
    Assistant Professor, Pediatrics
    Pediatric Gastroenterology Fellowship Director a
    Special Interests: Celiac Disease/Gluten related disorders; Education & nutrition; Fecal transplant; Capsule Endoscopy

Division Staff

  • Constance Chamberlin, RN, BSN
  • Erica Hall, RN, BSN
  • Margaret Martin, RN, BSN
  • Patricia Shields, RN, BS

Educational Activity

  • Precepting 3rd year students
  • Train 4th year students in GI elective
  • Give 10 lectures to residents every year
  • Mentor research projects for students and residents
  • Board review for graduating residents

Pediatric Gastroenterology Fellowship Program (UMMC)

Related Links


University of Maryland Medical Center Pediatric Specialty Practice
22 S. Greene St.
Baltimore, MD 21201

Upper Chesapeake
520 Upper Chesapeake Dr.
Physicians Pavilion II, Suite 509
Bel Air, MD 21014

Hanover, Anne Arundel County Practice
7556 Teague Rd., Suite 420
Hanover, MD 21076

1302 Bellona Avenue
Lutherville MD  21093

Contact Information

Division of Pediatric Gastroenterology & Nutrition
22 S. Greene Street, Rm N5W70
Baltimore, MD 21201
410-328-0812 (academic office)