Since 1968 our goal has been straightforward: help clients get their life back on track and achieve a life of sobriety, free from drug use and symptoms of mental illness. A life that is productive, socially responsible, and healthy. Gateway Foundation is the largest nonprofit treatment provider with treatment programs in California, Delaware, Florida, Illinois, Michigan, Missouri, New Jersey, Texas and Wyoming that specialize in substance use disorders for men, women, adolescents, and clients diagnosed with co-occurring mental health disorders. Gateways professional clinicians support over 9,000 people a day to successfully complete treatment by developing a personalized plan to treat the underlying causes of substance use disorder —not just their addiction to drugs or alcohol. Serving busy adults and families in Lake County and the greater northern Illinois area, Gateway Foundation Gurnee is easily accessible via Interstate 94 and Illinois Route 120, as well as by public transportation.