Walt Karniski is a developmental pediatrician. He was the director of the Division of Developmental Pediatrics at the University of South Florida, in Tampa, Florida for 15 years before opening a private practice where, for 20 years, he evaluated and treated children with ADHD, autism, anxiety, learning disabilities and other developmental difficulties. During that time, he developed and operated three private schools for children with ADHD, anxiety, and learning disabilities. He lives in Tampa, Florida.