Gwendolyn Sullivan, Therapist works in the Yorktown Heights, NY office at LifeStance. Areas of Expertise: ADHD, Alcohol and Drug Use Issues, Anxiety, Bipolar Disorder, Childhood Behavior Issues, Couple's Issues, Depression, Eating Disorders, Gender Identity, Grief, Later Life Transitions, Men's Issues, Midlife Transitions, Obsessive Compulsive Disorder (OCD), Psychosis/Schizophrenia, PTSD/Trauma, School Avoidance, Sleep Disorders/Insomnia, Women's Issues. Ages seen: 06-10, 11-14, 15-17, 18-21, 22-26, 27-40, 41-64, 65+. Take the first step towards improved mental health. Call or book online today.