Josselyn is a certified Community Mental Health Center which, for more than 70 years, has provided a full slate of quality, accessible mental health services, improving care for the patient in a coordinated setting with access to therapy, psychiatry, and other specialized services. Through our clinics in Northfield, Waukegan, and Northbrook, we serve a diverse clientele of more than 4,400 children, adolescents, and adults from nearly 200 communities across Cook and Lake Counties.