Substance use treatment; Treatment for co-occurring substance use plus either serious mental health illness in adults/serious emotional disturbance in children; Outpatient; Outpatient methadone/buprenorphine or naltrexone treatment; Regular outpatient treatment; Buprenorphine used in Treatment; Does not treat alcohol use disorder; Buprenorphine maintenance; Buprenorphine maintenance for predetermined time; Prescribes buprenorphine; Use methadone/buprenorphine for pain management or emergency dosing; Buprenorphine with naloxone; Buprenorphine without naloxone; Medications for HIV treatment; Medications for Hepatitis C treatment; Non-nicotine smoking/tobacco cessation; Private for-profit organization; Cash or self-payment; Comprehensive substance use assessment; Screening for tobacco use; Screening for substance use; Screening for mental disorders; Drug or alcohol urine screening; HIV testing; STD testing; TB screening; Metabolic syndrome monitoring; Smoking permitted without restriction; Female; Male