Helen Blair Simpson, M.D., Ph.D., is professor of psychiatry at Columbia University Medical College, director of the Anxiety Disorders Clinic at the New York State Psychiatric Institute, and director of the Center for Obsessive-Compulsive and Related Disorders. Her research program focuses on translating science into new treatments for obsessive-compulsive disorder (OCD). For the patients of today, she uses clinical trial methodology to study the most effective ways to deliver current treatments. For the patients of tomorrow, she collaborates with brain imagers and basic scientists to study the brain mechanisms of obsessions, compulsions, and anxiety, with the goal of identifying new targets for treatment development. Her research has been continuously funded by the National Institute of Mental Health since 1999. Because of her expertise, she helped develop practice guidelines for the treatment of OCD for the American Psychiatric Association and advised the American Psychiatric Association and the World Health Organization on the classification of Obsessive-Compulsive and Related Disorders. Dr. Simpson completed the MD-PhD program at The Rockefeller University/Cornell University Medical College and internship and residency training at the Columbia-Presbyterian Medical Center/New York State Psychiatric Institute. She joined the Anxiety Disorders Clinic in 1996 and has served as its Director since 2006.