Substance use treatment; Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children; Outpatient; Intensive outpatient treatment; Regular outpatient treatment; Does not treat alcohol use disorder; Does not treat opioid use disorders; Anger management; Brief intervention; Cognitive behavioral therapy; Motivational interviewing; Matrix Model; Relapse prevention; Substance use disorder counseling; Telemedicine/telehealth therapy; Trauma-related counseling; Private for-profit organization; Medicaid; Private health insurance; Cash or self-payment; Adolescents; Young adults; Seniors or older adults; Lesbian, gay, bisexual, transgender, or queer/questioning (LGBTQ); Criminal justice (other than DUI/DWI)/Forensic clients; Clients with co-occurring mental and substance use disorders; Clients with co-occurring pain and substance use disorders; Comprehensive substance use assessment; Outreach to persons in the community; Screening for substance use; Screening for mental disorders; Aftercare/continuing care; Discharge Planning; Housing services; Recovery coach; Mentoring/peer support; Substance use disorder education; Individual counseling; Group counseling; Family counseling; Smoking not permitted; Seniors; Female; Male; Vaping not permitted