Robert Zarr is a pediatrician at Unity Health Care, located in Washington, DC, where he cares for low-income and immigrant populations. He is founder and director of DC Park Rx (www.dcparkrx.org), a community health initiative to prescribe nature to patients and families to prevent and treat chronic disease and promote wellness. He also serves as the Park Rx advisor to the National Park Service in his national advocacy to connect people to parks (www.parkrx.org). Previously, he has served as president of the American Academy of Pediatrics D.C. Chapter. Dr. Zarr received his medical degree from Baylor College of Medicine and completed his pediatric residency at Texas Children's Hospital in Houston. He also has a Master's degree in public health, specializing in international health, from the University of Texas School of Public Health.