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; Regular outpatient treatment; In-network prescribing entity; Other contracted prescribing entity; No formal relationship with prescribing entity; Does not use medication assisted treatment for alcohol use disorder; Accepts clients using MAT but prescribed elsewhere; Anger management; Brief intervention; Cognitive behavioral therapy; Contingency management/motivational incentives; Dialectical behavior therapy; Motivational interviewing; Relapse prevention; Substance use disorder counseling; Trauma-related counseling; Private for-profit organization; State Substance use treatment agency; State department of health; IHS/Tribal/Urban (ITU) funds; Medicare; Medicaid; Federal military insurance (e.g., TRICARE); Private health insurance; Cash or self-payment; Sliding fee scale (fee is based on income and other factors); Pregnant/postpartum women; Clients with co-occurring mental and substance use disorders; Comprehensive substance use assessment; Screening for tobacco use; Screening for substance use; Drug or alcohol urine screening; TB screening; Aftercare/continuing care; Discharge Planning; Naloxone and overdose education; Outcome follow-up after discharge; Self-help groups; Housing services; Mentoring/peer support; HIV or AIDS education, counseling, or support; Substance use disorder education; Individual counseling; Group counseling; Family counseling; Smoking permitted in designated area; Adults; Young adults; Female; Male; Specially designed program for DUI/DWI clients; Case management service; Social skills development