He received his doctorate in clinical psychology from the University of Florida and completed his psychology internship and postdoctoral fellowship at the UCLA Semel Institute for Neuroscience and Human Behavior. His research focuses on enhancing treatment response, alternative service delivery, dissemination, and treatment refinement/augmentation – primarily in youth with anxiety, OCD, autism and tic disorders. In addition to research mentorship, Dr. Lewin directs a training clinic in pediatric neuropsychiatry for graduate students, postdoctoral fellows, and physician trainees. Dr. Lewin is an examination chair for child board certification examinations with the American Board of Professional Psychology and is an associate editor for the Journal of Child and Family Studies.