Substance use treatment; Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children; Outpatient; Outpatient day treatment or partial hospitalization; Intensive outpatient treatment; General Hospital (including VA hospital); Naltrexone used in Treatment; No formal relationship with prescribing entity; This facility administers/prescribes medication for alcohol use disorder; No formal relationship with prescribing entity; Accepts clients using MAT but prescribed elsewhere; Acamprosate (Campral®); Disulfiram; Naltrexone (oral); Clonidine; Medication for mental disorders; Brief intervention; Cognitive behavioral therapy; Motivational interviewing; Relapse prevention; Substance use disorder counseling; Private non-profit organization; State Substance use treatment agency; State mental health department; State department of health; The Joint Commission; Medicare; Medicaid; Federal military insurance (e.g., TRICARE); Private health insurance; Cash or self-payment; State-financed health insurance plan other than Medicaid; Clients with co-occurring mental and substance use disorders; Screening for substance use; Screening for mental disorders; Breathalyzer or blood alcohol testing; Drug or alcohol urine screening; Discharge Planning; Naloxone and overdose education; Substance use disorder education; Individual counseling; Group counseling; Family counseling; Marital/couples counseling; Smoking permitted in designated area; Adults; Young adults; Female; Male; Vaping permitted in designated area; Mental health services