 Background Participation in continuing care is one of the two most significant factors in preventing relapse after intensive Substance Use Disorder SUD treatment.1 A primary component of continuing care, social support, is a protective factor for SUD treatment relapse.2 Social support provided by community self-help groups e.g. 12-step programs such as Alcoholics Anonymous improves Substance Use Disorder SUD treatment outcomes.1,4 Post-treatment referral to self-help groups was recently described as an effective, low-cost option,3 but counselors vary in their referral methods, often simply telling patients to find and attend meetings in their community. 