Deirdre Mullen, Psychiatric Nurse Practitioner works in the West Nyack, NY office at LifeStance. Areas of Expertise: Alcohol and Drug Use Issues, Anxiety, Depression, Grief, Hoarding, Later Life Transitions, Medical Conditions/Health Psychology, Obsessive Compulsive Disorder (OCD), PTSD/Trauma, Sleep Disorders/Insomnia. Ages seen: 18-21, 22-26, 27-40, 41-64. Take the first step towards improved mental health. Call or book online today.