Substance use treatment; Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children; Outpatient; Regular outpatient treatment; General Hospital (including VA hospital); Does not use medication assisted treatment for alcohol use disorder; Does not use MAT for opioid use disorders; Medication for mental disorders; Cognitive behavioral therapy; Substance use disorder counseling; Trauma-related counseling; Telemedicine/telehealth therapy; Private for-profit organization; State Substance use treatment agency; State mental health department; The Joint Commission; Medicare; Medicaid; Private health insurance; Cash or self-payment; Comprehensive mental health assessment; Comprehensive substance use assessment; Screening for tobacco use; Screening for substance use; Screening for mental disorders; Breathalyzer or blood alcohol testing; Drug and alcohol oral fluid testing; Aftercare/continuing care; Discharge Planning; Treatment for gambling disorder; Substance use disorder education; Individual counseling; Family counseling; Marital/couples counseling; Smoking not permitted; Female; Male; Specially designed program for DUI/DWI clients; Vaping not permitted; Domestic violence services, including family or partner; Mental health services; Social skills development