Substance use (SU) problems are common among adolescents, a serious health risk for them and a major public health problem, but are inadequately addressed in most pediatric health care settings. Primary care offers an excellent context for SU assessment and treatment for adolescents and their families, offering better access and a less stigmatized environment for receiving treatment than specialty programs. This paper examines the literature on the integration of substance use treatment with adolescent health care, focusing on 2 areas: Screening, Brief Intervention, and Referral to Treatment (SBIRT) in Emergency Departments and Primary Care, and School- and College-Based Health Centers.