Substance use treatment; Outpatient; Outpatient methadone/buprenorphine or naltrexone treatment; Regular outpatient treatment; Buprenorphine used in Treatment; Naltrexone used in Treatment; In-network prescribing entity; No formal relationship with prescribing entity; Does not treat alcohol use disorder; Buprenorphine detoxification; Buprenorphine maintenance; Buprenorphine maintenance for predetermined time; Prescribes buprenorphine; Prescribes naltrexone; Relapse prevention with naltrexone; Accepts clients using MAT but prescribed elsewhere; Buprenorphine with naloxone; Buprenorphine without naloxone; Naltrexone (oral); Medication for mental disorders; Relapse prevention; Substance use disorder counseling; Telemedicine/telehealth therapy; Private for-profit organization; IHS/Tribal/Urban (ITU) funds; Medicaid; Federal military insurance (e.g., TRICARE); Private health insurance; Cash or self-payment; Comprehensive substance use assessment; Outreach to persons in the community; Screening for tobacco use; Screening for substance use; Screening for mental disorders; Drug and alcohol oral fluid testing; Drug or alcohol urine screening; Naloxone and overdose education; Treatment for other addiction disorder; Medication routinely used during detoxification; Hepatitis education, counseling, or support; Substance use disorder education; Smoking/vaping/tobacco cessation counseling; Smoking permitted in designated area; Female; Male; Vaping permitted in designated area; Integrated primary care services