Chair, Department of Pediatrics

Mary Leonard, MD, MSCE

Arline and Pete Harman Professor and Chair, Department of Pediatrics (Nephrology)

Adalyn Jay Physician-in-Chief, Stanford Medicine Children's Health

Director, Maternal and Child Health Research Institute

Mary Leonard, MD, MSCE, is the Arline and Pete Harman Professor and Chair of the Department of Pediatrics at Stanford University School of Medicine and the Adalyn Jay Physician in Chief at Stanford Medicine Children's Health. She assumed these positions on July 1, 2016.

Energetic and collaborative, Dr. Leonard is a compassionate clinician and researcher who cares deeply about improving the health and well-being of children everywhere. A graduate of the Stanford University School of Medicine, Mary returned to Stanford Medicine in 2014 after spending 25 years at the Children’s Hospital of Philadelphia and the University of Pennsylvania. At Stanford, her multi-disciplinary research program is focused on the impact of chronic diseases on bone metabolism and nutrition across the life span. Mary directs the innovative and trans-disciplinary child and maternal health research and training initiatives of the Stanford Maternal and Child Health Research Institute.

Mary is a distinguished investigator, an expert clinician, and a respected mentor who embodies the academic and integrated mission of Stanford Medicine. A member of the Precision Health Committee, she is committed to Stanford Medicine’s vision of proactive and personalized health care and has been at the forefront of efforts to integrate Precision Health approaches and skills into our training programs.

Pediatrics Division Chiefs And Associate Chairs

Pediatrics Division Chiefs and Associate Chairs Org Chart

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Rebecca Blankenburg, MD, MPH

Associate Chair, Education

David Maahs, MD, PhD

Associate Chair, Academic Affairs



Anna Gloyn, DPhil

Associate Chair, Basic Science Research

Gary Shaw, DrPH

Associate Chair, Clinical Research

Scott Sutherland, MD

Associate Chair, Faculty Clinical Affairs

Baraka Floyd, MD

Associate Chair, Diversity, Equity, Inclusion, and Justice

Michael G. Propst, MBA

Associate Chair, Finance & Administration

Lisa Chamberlain, MD, MPH

Associate Chair, Policy and Community Engagement



Anne M. Dubin, MD

Division Chief,  Cardiology 

Natalie Pageler, MD

Division Chief, Clinical Informatics


Justin Baker, MD, FAAP, FAAPHM

Division Chief, Quality of Life and Pediatric Palliative Care