Substance use treatment; Detoxification; Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children; Hospital inpatient/24-hour hospital inpatient; Outpatient; Hospital inpatient detoxification; Hospital inpatient treatment; Outpatient day treatment or partial hospitalization; Intensive outpatient treatment; Psychiatric hospital; Buprenorphine used in Treatment; Naltrexone used in Treatment; Other contracted prescribing entity; Accepts clients using medication assisted treatment for alcohol use disorder but prescribed elsewhere; Other contracted prescribing entity; No formal relationship with prescribing entity; Buprenorphine detoxification; Buprenorphine maintenance for predetermined time; Prescribes buprenorphine; Prescribes naltrexone; Accepts clients using MAT but prescribed elsewhere; Lofexidine/clonidine detoxification; Buprenorphine with naloxone; Naltrexone (oral); Naltrexone (extended-release, injectable); Medications for Hepatitis C treatment; Clonidine; Nicotine replacement; Non-nicotine smoking/tobacco cessation; Brief intervention; Cognitive behavioral therapy; Contingency management/motivational incentives; Dialectical behavior therapy; Motivational interviewing; Relapse prevention; Substance use disorder counseling; Telemedicine/telehealth therapy; Trauma-related counseling; 12-step facilitation; Private for-profit organization; State Substance use treatment agency; State mental health department; The Joint Commission; Medicare; Medicaid; Federal military insurance (e.g., TRICARE); Private health insurance; Cash or self-payment; Young adults; Comprehensive substance use assessment; Outreach to persons in the community; Screening for tobacco use; Screening for substance use; Screening for mental disorders; Professional interventionist/educational consultant; Breathalyzer or blood alcohol testing; Drug or alcohol urine screening; Aftercare/continuing care; Discharge Planning; Naloxone and overdose education; Outcome follow-up after discharge; Alcohol Detoxification; Benzodiazepines Detoxification; Cocaine Detoxification; Methamphetamines detoxification; Opioids detoxification; Medication routinely used during detoxification; Substance use disorder education; Smoking/vaping/tobacco cessation counseling; Group counseling; Family counseling; Smoking permitted in designated area; Adults; Young adults; Female; Male; Mental health services; Transportation assistance