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Best Children's Hospitals US News & World Report 2025-26
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Meet Our Team

Leadership

Christopher P. Duggan, MD, MPH

Christopher P. Duggan , MD, MPH

Senior Gastroenterologist, Division of Gastroenterology, Hepatology and Nutrition; Director, Center for Nutrition; Medical Director, Center for Advanced Intestinal Rehabilitation (CAIR)
Meltzer Professor of Pediatrics in the Field of Gastroenterology, Harvard Medical School; Professor in the Departments of Nutrition and Global Health and Population, Harvard TH Chan School of Public Health
Bridget Hron, MD, MMSc

Bridget Hron , MD, MMSc

Gastroenterologist, Division of Gastroenterology, Hepatology and Nutrition; Associate Director, Center for Nutrition
Assistant Professor of Pediatrics, Harvard Medical School
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Amy Mahar

Clinical Nutrition Manager, Feeding Preparation Center, Nutrition Center

Clinical Nutrition Educators

Physicians

Alexandra Carey, MD

Alexandra Carey , MD

Vice-Chairman of Pediatric General Surgery Boston Children’s Hospital; Gastroenterologist, Department of Surgery
Assistant Professor of Pediatrics, Harvard Medical School
Denis Chang, MD, MS

Denis Chang , MD, MS

Gastroenterologist, Division of Gastroenterology, Hepatology and Nutrition
Instructor of Pediatrics, Harvard Medical School
Sarah Fleet, MD

Sarah Fleet , MD

Gastroenterologist, Division of Gastroenterology, Hepatology and Nutrition
Instructor of Pediatrics, Harvard Medical School
Lissette Jimenez, MD, MPH

Lissette Jimenez , MD, MPH

Co-Director Congenital Enteropathy Program; Gastroenterologist, Division of Gastroenterology, Hepatology and Nutrition
Instructor of Pediatrics, Harvard Medical School
Nilesh Mehta, MD

Nilesh Mehta , MD

Chief of Critical Care Medicine; Chair, Critical Care Nutrition & Metabolism, Department of Anesthesiology, Critical Care and Pain Medicine
Professor of Anaesthesia (Critical Care), Harvard Medical School
Desiree Sierra-Velez, MD

Desiree Sierra-Velez , MD

Medical Director, Adolescent Weight Loss (Bariatric) Surgery Program; Gastroenterologist, Division of Gastroenterology, Hepatology and Nutrition
Instructor of Pediatrics, Harvard Medical School
Erin Syverson, MD

Erin Syverson , MD

GI Director, Eosinophilic Gastrointestinal Disease Program; Gastroenterologist, Division of Gastroenterology, Hepatology and Nutrition
Assistant Professor of Pediatrics, Harvard Medical School
Amy Turner, MD, MSHPEd

Amy Turner , MD, MSHPEd

Associate Director, Inpatient Services; Gastroenterologist, Division of Gastroenterology, Hepatology and Nutrition
Instructor of Pediatrics, Harvard Medical School
Allison Wu, MD

Allison Wu , MD, MPH

Gastroenterologist, Division of Gastroenterology, Hepatology and Nutrition
Assistant Professor of Pediatrics, Harvard Medical School

Dietitians and Dietetic Technicians

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Chantelle Arentson

Clinical Nutrition Specialist I
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Kelsey Hodge

Clinical Nutrition Specialist I
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Anna Kaplan

Clinical Nutrition Specialist, Division of Gastroenterology Hepatology and Nutrition
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Heather Stone

Clinical Nutrition Specialist (Per Diem)
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Maria Walazek

Clinical Nutrition Specialist II

Nurse Practitioners

Staff Nurses

Pharmacists