Dr. Cook is a clinical psychologist, who specializes in clinical  neuropsychology, and an Assistant Professor of Physical Medicine and Rehabilitation at Harvard Medical School.

Dr. Cook received his Ph.D. in clinical psychology at the University of Rhode Island and completed his clinical internship at Massachusetts General Hospital/Harvard Medical School. He then completed a three-year clinical-research fellowship in neuropsychology and traumatic brain injury at Massachusetts General Hospital, Spaulding Rehabilitation Network, and Harvard Medical School.

Dr. Cook sees patients for neuropsychological consultation and assessment through the Mass General for Children Sports Concussion Program, a multidisciplinary clinic providing individualized and holistic concussion treatment and rehabilitation.

Dr. Cook has an active research program designed to improve concussion and brain injury assessment, treatment, and rehabilitation, seeking to lay the foundation for providing more personalized and effective health care to promote recovery and restoration of function. His research focuses on the acute effects, recovery trajectories, and treatment and rehabilitation needs of individuals who sustain injuries to their brains, with an emphasis on the potential unique needs of youth with pre-existing neurodevelopmental disorders, particularly attention-deficit/hyperactivity disorder (ADHD). Dr. Cook has published over 50 peer-reviewed publications and has lectured widely on such topics as concussion assessment, treatment and rehabilitation.