Tim Wilens is faculty lead of Child Health for Harvard Catalyst. He is chief of the Division of Child and Adolescent Psychiatry and co-director of the Center for Addiction Medicine at Massachusetts General Hospital (MGH). He is the MGH Trustees Chair in Addiction Medicine and a professor of psychiatry at Harvard Medical School. Wilens’ research interests include the relationship among attention deficit/hyperactivity disorder (ADHD), bipolar disorder, substance use disorders, embedded healthcare models, and the pharmacotherapy of ADHD across the lifespan. Wilens is a distinguished fellow of the American Psychiatric Association and the American Academy of Child and Adolescent Psychiatry and is on the editorial boards or is a scientific reviewer for more than 35 journals. He earned his MD at the University of Michigan Medical School in Ann Arbor and completed his residency in child, adolescent, and adult psychiatry at MGH.