Mark Weiss, M.D., is an MD psychotherapist with a practice that focuses on the medical and psychotherapeutic management of addiction. He joined Bellwood Health Services in 2004 as a consulting staff physician, and was appointed Medical Director in January 2009. Dr. Weiss also maintains an interest in the management of anxiety disorders and the way in which anxiety and addiction are inter-related. His approach to emotional healing finds its roots in the psychology of mindfulness.