Autism Geisinger Health System Autism & Developmental Medicine Institute | About Me Share Pin Email Autism Treatment Basics Symptoms Diagnosis Causes Asperger's Syndrome Adult Autism Children and Autism Applied Behavioral Analysis School and Summer Options Hints and Tips Teens and Autism Support for Parents Positive Living Autism and Family Life Glossary View All Updated April 20, 2016 Meet Dr. Tom Challman, the medical director of the Geisinger Autism and Developmental Medicine Institute and host of About.com's Autism series. Up Next Up Next Article Should I Have My Child Screened for Autism? Up Next Video Are We Close to Understanding the Causes of Autism? Up Next Article Our Pediatrician Missed the Signs of Autism in Our Child! Up Next Article Who Should Evaluate My Child for a Possible Autism Diagnosis?