He received his medical degree in 1984 from the University Of Arizona College of Medicine and three years later completed his residency there in pediatrics. He practiced as a general pediatrician in Tucson for 14 years, with a special interest in Behavioral problems such as ADHD and Autism. He then completed a 2 year fellowship in Integrative Medicine at the Center for Integrative Medicine at the University of Arizona under the leadership of Dr. Andrew Weil. From 2003-2008 Dr. Newmark maintained a consulting practice in Pediatric Integrative Medicine in Tucson, Arizona; recently he joined Whole Child Wellness, an integrative pediatric practice in Belmont, California. He continues as a faculty member of the Arizona Center for Integrative Medicine and lectures widely on Pediatric Integrative Medicine, ADHD, and Autism.