McLean Hospital is the #1 Ranked Psychiatric Hospital in the US and provides evidence-based psychiatric and addictions care for adolescents and adults. We are the flagship teaching hospital for Harvard University and are recognized leaders in the treatment and research of Substance Use Disorders, Obsessive Compulsive Disorder (OCD), Anxiety, Depression, Borderline Personality Disorder (BPD), Geriatric Psychiatry and Psychiatric Assessment.