Dr. Beljan is an expert evaluating gifted children and their common mis and dual-diagnoses. Along with Dr. James Webb, Dr. Beljan co-authored Misdiagnosis and Dual Diagnosis of Gifted Children and Adults: ADHD, BiPolar, OCD, Depression, and Other Disorders. Dr. Beljan also co-authored Large Scale Brain Systems and Neuropsychological Assessment: An Effort to Move Forward. Dr. Beljan is a past president of the American Board of Pediatric Neuropsychology and served on the 2e Newsletter editorial board.