Mary L. Leppert, MD

Dr. Mary L. O’Connor Leppert is an assistant professor of pediatrics at the Johns Hopkins University School of Medicine. Her area of expertise is the early identification of developmental disorders. 

She serves as co-director of the Neonatal Intensive Care Unit (NICU) Follow-Up Clinic and assistant director of the Center for Development and Learning at the Kennedy Krieger Institute, an affiliate of Johns Hopkins. She is also a consultant physician at St. Agnes Hospital.

Dr. Leppert received her undergraduate degree in biology from the Catholic University of America in Washington, DC. She completed her medical training at the national Universities of Ireland, University College Cork, where she earned her M.B., B.Ch., B.A.O. degrees. She completed a residency in pediatrics at St. Agnes Hospital in Baltimore, and joined Kennedy Krieger in 1992 with a fellowship in developmental pediatrics through the Johns Hopkins University School of Medicine. 

She has been an active medical staff member at the Kennedy Krieger Institute since 1995 in the division of Neurology and Developmental Medicine. 

Dr. Leppert’s research interests are related to the early identification of developmental disorders in the NICU follow up and preschool programs. She participates in clinical research on developmental outcomes of infants from the NICU.