Calvin "Cal'e" Walker, Psychiatric Nurse Practitioner works in the Chicago, IL office at LifeStance. Areas of Expertise: ADHD, Anxiety, Bipolar Disorder, Depression, Grief, Men's Issues, Obsessive Compulsive Disorder (OCD), Postpartum Depression/Anxiety, Psychosis/Schizophrenia, PTSD/Trauma, Sleep Disorders/Insomnia. 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.