Substance use treatment; Transitional housing, halfway house, or sober home; 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; Short-term residential; 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; Brief intervention; Cognitive behavioral therapy; Matrix Model; Relapse prevention; Substance use disorder counseling; 12-step facilitation; Private non-profit organization; State Substance use treatment agency; Federal, or any government funding for substance use treatment programs; Cash or self-payment; Adult women; Adult men; Clients with co-occurring mental and substance use disorders; Clients with co-occurring pain and substance use disorders; Clients with HIV or AIDS; Clients who have experienced sexual abuse; Clients who have experienced intimate partner violence, domestic violence; Clients who have experienced trauma; Comprehensive substance use assessment; Screening for substance use; Discharge Planning; Outcome follow-up after discharge; Self-help groups; Housing services; Mentoring/peer support; HIV or AIDS education, counseling, or support; Health education services other than HIV/AIDS or hepatitis; Substance use disorder education; Individual counseling; Group counseling; Family counseling; Smoking permitted without restriction; Adults; Young adults; Female; Male; Vaping permitted without restriction; Case management service; Social skills development