Gastroenterology and Nutrition Team Bios

 

Anupama Chawla, MD, DCH, NBPNS
Professor of Pediatrics; Chief, Division of Pediatric Gastroenterology
Director of Celiac Disease Center

Residency: Stony Brook University School of Medicine
Fellowship: North Shore University Hospital, Cornell Medical Center
Interests: Celiac Disease, Nutrition, Short Bowel Syndrome, Inflammatory Bowel Disease

 

Image: Dr. Chawla

Jeffrey Morganstern, MD
Associate Professor of Pediatrics
Director of Inflammatory Bowel Disease Center

Residency: Cohen Children’s Medical Center
Fellowship: Children’s Hospital at Montefiore
Interests: Inflammatory Bowel Disease, Gastrointestinal Allergies, Information Technology

Jeff Morganstern

Grace Gathungu, MD
Associate Professor of Pediatrics
Clinical Scientist (NIH funded)


Residency: State University of New York Health Science Center at Brooklyn
Fellowship: Yale School of Medicine
Interests: Pediatric Inflammatory Bowel Disease, Basic Science Research in IBD

Image Dr. Grace Gathungu

Michelle Tobin, MD
Assistant Professor of Pediatrics
Medical Educator for Renaissance School of Medicine at Stony Brook University
Director of Duchenne Muscular Dystrophy Clinic

Residency: Jacobi Medical Center
Fellowship: Stony Brook Children’s Hospital
Interests: Medical education, Eosinophilic Esophagitis, Cystic Fibrosis, Motility, Inflammatory Bowel Disease

 

image: Michelle Tobin

Lesley Small-Harary, MD
Assistant Professor of Pediatrics
Assistant Director for Celiac Disease Center
Program Director, Pediatric Gastroenterology Fellowship Program

Residency: Weill Cornell Medicine
Fellowship: Weill Cornell Medicine
Interests: Inflammatory Bowel Disease, Celiac Disease, Medical Education

 

image: Lesley Small-Harary

Keith Breglio, MD
Associate Professor of Pediatrics
Director of Pediatric Endoscopy

Residency: Long Island Jewish-Schneider Children’s Hospital
Fellowship: Mount Sinai School of Medicine
Interests: Inflammatory Bowel Disease, Liver Disease, Pediatric Endoscopy

 

image: Keith Breglio

Ada Lee, DO
Assistant Professor of Pediatrics
Co-Director Healthy Weight and Wellness Center

Residency: Stony Brook Children's Hospital
Fellowship: Stony Brook Children's Hospital
Interests: Pediatric Obesity, Eosinophilic Esophagitis, Celiac Disease, Inflammatory Bowel Disease

Lee Ada

Castle Connelly

Stony Brook Children's Top Doctors 2025

The annual "2025 Castle Connolly Top Doctors" list featured 113 Stony Brook Medicine physicians, 19 are pediatric physicians from Stony Brook Children's, two of them our own Pediatric Gastroenterology faculty, Dr. Anupama Chawla and Dr. Keith Breglio. Castle Connolly evaluates several criteria when selecting Top Doctors, including professional qualifications, education, hospital and faculty appointments, research leadership, professional reputation and disciplinary history.

 

America's 50 Best Top 1% in the Nation and the Only on LI

Stony Brook Medicine has received the highest level of achievement from Healthgrades as one of America’s 50 Best for 2025. This achievement places Stony Brook among the top 1% nationwide for overall excellence in care and is the only on Long Island to be ranked among America’s 50 Best. Stony Brook University Hospital, Stony Brook Southampton Hospital and Stony Brook Eastern Long Island Hospital are collectively assessed by Healthgrades and share the America’s 50 Best Hospitals Award™.

By focusing exclusively on clinical outcomes, including risk-adjusted mortality and complications, the Healthgrades ratings provide critical feedback for patients and hospitals alike.

“This distinction reflects our shared commitment across Stony Brook Medicine to bring exceptional care to our patients,” says William A. Wertheim, MD, MBA, Executive Vice President for Stony Brook Medicine. “This is only possible when we collectively maintain the highest standards of quality throughout the organization.”

“I am grateful to all of our healthcare professionals for their dedication to excellence,” says Carol A. Gomes, MS, FACHE, CPHQ, Chief Executive Officer, Stony Brook University Hospital. “Our steady increase in rankings — from the top 250 since 2015, to the top 100 since 2019 and now the top 50 for three years in a row — can give patients the confidence in knowing that Stony Brook delivers consistent, high-quality care.” Read more.