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; No formal relationship with prescribing entity; Accepts clients using medication assisted treatment for alcohol use disorder but prescribed elsewhere; No formal relationship with prescribing entity; Accepts clients using MAT but prescribed elsewhere; Anger management; Motivational interviewing; Trauma-related counseling; Private non-profit organization; State mental health department; Council on Accreditation (COA); Medicaid; Cash or self-payment; Sliding fee scale (fee is based on income and other factors); Comprehensive mental health assessment; Screening for substance use; Screening for mental disorders; Aftercare/continuing care; Discharge Planning; Outcome follow-up after discharge; Substance use disorder education; Individual counseling; Smoking permitted without restriction; Female; Male; Case management service; Mental health services