Chestnut Health Systems- Bloomington Adolescent Outpatient and Intensive Outpatient Treatment Model is a therapeutic intervention designed for youth ages 12 to 18 who meet the American Society of Addiction Medicine’s criteria for Level I or Level II treatment placement. Treatment includes a 14-week skill-building group, weekly group counseling sessions, and an individualized treatment plan. The overall goal is behavioral and emotional change that leads to abstinence from alcohol and drugs.