About Maureen Leonard, MD

Maureen Leonard, MD, MMSc, is the Clinical Director of the Center For Celiac Research and Treatment at MassGeneral Hospital for Children (MGHfC) and an Assistant Professor of Pediatrics at Harvard Medical School (HMS). She sees adult and pediatric patients with celiac disease, non-celiac gluten sensitivity, dermatitis herpetiformis, gluten ataxia and other gluten-related disorders.

Dr. Leonard obtained her medical degree from New York Medical College, completed her residency in general pediatrics at Tufts Medical Center and completed her fellowship in Pediatric Gastroenterology at MGHfC. An associate investigator at the Nutrition Obesity Research Center at HMS, Dr. Leonard received a Master’s Degree in Clinical and Translational Investigation from HMS.

Clinical Interests:



Mass General for Children: Pediatric Gastroenterology & Nutrition Program
55 Fruit St.
Yawkey Center for Outpatient Care
Suite 6B
Boston, MA 02114
Phone: 617-726-8705

Medical Education

  • MD, New York Medical College
  • Residency, Tufts Medical Center
  • Fellowship, Massachusetts General Hospital

American Board Certifications

  • Pediatric Gastroenterology, American Board of Pediatrics
  • Pediatrics, American Board of Pediatrics

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.


Dr. Leonard’s research is focused on predicting and preventing celiac disease through precision medicine. Precision medicine is an emerging approach to disease prevention and treatment that takes into account individual variability in genes, environment, and lifestyle.

Her current work includes identifying biomarkers that can predict intestinal healing in patients with celiac disease, building translational models capable of predicting autoimmune disease in high-risk individuals and working with Dr. Alessio Fasano on the NIH-funded Celiac Disease: Genomic Environment Microbiome and Metabolomic Study (CDGEMM).

Dr. Leonard currently holds funding from the NIH (K23DK122127) and was previously funded by the Thrasher Research Fund, the Nutrition Obesity Research Center at Harvard,  and the NIH (FDK109620A).



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