Al Mathewson, Psychiatric Nurse Practitioner works in the Knoxville, TN office at LifeStance. Areas of Expertise: Alcohol and Drug Use Issues, Anxiety, Bipolar Disorder, Couple's Issues, Depression, Later Life Transitions, Men's Issues, Midlife Transitions, Postpartum Depression/Anxiety, Psychosis/Schizophrenia, PTSD/Trauma, Sleep Disorders/Insomnia, Somatoform Disorders. Ages seen: 18-21, 22-26, 27-40, 41-64, 65+. Take the first step towards improved mental health. Call or book online today.