Jennifer Trachtenberg, M.D., known to her patients as Dr. Jen, is a nationally renowned board-certified pediatrician and parenting expert. She earned her medical degree in 1993 at The Mount Sinai School of Medicine, where she also completed her pediatric residency. She is an Assistant Clinical Professor of Pediatrics at the Icahn School of Medicine at Mount Sinai, and a Fellow of the American Academy of Pediatrics. Dr. Jen contributes regularly about health and parenting topics, including child development, childhood obesity and sleep issues, and is the author of two parenting books, The Smart Parent's Guide to Getting Your Kids Through Check Ups, Illness and Accidents (2010), and Good Kids, Bad Habits: The Real Age Guide to Raising Healthy Children (2007). She and her husband live just outside of New York City, where they are raising their three children.