Tristram Dashti-Gibson, Counselor works in the Portsmouth, NH office at LifeStance. Areas of Expertise: ADHD, Alcohol and Drug Use Issues, Anxiety, Bipolar Disorder, Couple's Issues, Depression, Gender Identity, Grief, Later Life Transitions, Men's Issues, Midlife Transitions, Obsessive Compulsive Disorder (OCD), PTSD/Trauma. Ages seen: 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.