Private for-profit organization; State mental health department; Private health insurance; Cash or self-payment; Adolescents; Young adults; Comprehensive mental health assessment; Complete medical history/physical exam; Screening for tobacco use; Screening for substance use; Screening for mental disorders; Drug or alcohol urine screening; Discharge Planning; Outcome follow-up after discharge; Self-help groups; Mentoring/peer support; Treatment for other addiction disorder; Substance use disorder education; Smoking/vaping/tobacco cessation counseling; Individual counseling; Group counseling; Family counseling; Smoking not permitted; Adults; Children/adolescents; Young adults; Female; Male; Vaping not permitted; Case management service; Mental health services; Social skills development; Suicide prevention services; Substance use treatment; Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children; Residential/24-hour residential; Long-term residential; Does not use medication assisted treatment for alcohol use disorder; Does not treat opioid use disorders; Medication for mental disorders; Cognitive behavioral therapy; Contingency management/motivational incentives; Motivational interviewing; Relapse prevention; Substance use disorder counseling; Trauma-related counseling; Telemedicine/telehealth therapy; 12-step facilitation