Welcome to the website of Mark Bertin, MD. Based out of Pleasantville, NY, Dr. Bertin’s practice specializes in developmental pediatrics, a sub-specialty of pediatrics focusing on the promotion of child development, and developmental disorders such as ADHD, autism, and learning disabilities. As a developmental pediatrician, Dr. Bertin can evaluate your child’s overall development, provide behavioral evaluation and supports, and recommend specific educational and treatment plans, while also offering ongoing support to your child and family.