Hope has a home here. Providing recovery from addiction since 1972. Call 800-472-1177 for help. Gateway Rehab is the largest and most trusted addiction recovery network in western PA Gateway Rehab is a private, not-for-profit organization that leading prevention, treatment, and education of substance use disorders and addiction. Our evidence-based treatment methods are founded on our philosophy that substance use disorder is a chronic but treatable medical condition affecting millions of individuals and families. Gateway has been offering scientifically proven behavioral health treatment methods in conjunction 12-step facilitation. Our experts provide therapy that is gender and age-specific in individual and group settings. Gateway Rehab's mission is to help all those affected by addictive diseases to be healthy in body, mind and spirit.