Substance use treatment; Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children; Outpatient; Residential/24-hour residential; Outpatient day treatment or partial hospitalization; Long-term residential; Short-term residential; Naltrexone used in Treatment; Prescribes naltrexone; Acamprosate (Campral®); Disulfiram; Naltrexone (oral); Naltrexone (extended-release, injectable); Medications for HIV treatment; Medications for Hepatitis C treatment; Clonidine; Medication for mental disorders; Nicotine replacement; Private for-profit organization; State department of health; The Joint Commission; Private health insurance; Cash or self-payment; Adult women; Adult men; Clients with co-occurring mental and substance use disorders; Clients who have experienced trauma; Screening for substance use; Screening for mental disorders; Breathalyzer or blood alcohol testing; Drug or alcohol urine screening; HIV testing; STD testing; TB screening; Metabolic syndrome monitoring; Testing for Hepatitis B (HBV); Testing for Hepatitis C (HCV); Aftercare/continuing care; Discharge Planning; Outcome follow-up after discharge; Self-help groups; Housing services; Recovery coach; Mentoring/peer support; Treatment for gambling disorder; Treatment for other addiction disorder; HIV or AIDS education, counseling, or support; Hepatitis education, counseling, or support; Health education services other than HIV/AIDS or hepatitis; Substance use disorder education; Smoking/vaping/tobacco cessation counseling; Individual counseling; Group counseling; Family counseling; Marital/couples counseling; Smoking not permitted; Adults; Young adults; Female; Male; Mental health services; Transportation assistance