Yale instructors from the course Addiction Treatment: Clinical Skills for Healthcare Providers walk through how clinicians screen patients for substance use. Using a model patient case performed by actors, the lesson covers concrete screening questions for tobacco, alcohol, and other drugs, and explains how to distinguish moderate, binge, and heavy drinking. It shows how to interpret a positive screen and sort patients into no-risk, low-risk, at-risk, or high-risk categories for a substance use disorder, then outlines when that classification calls for further intervention or referral to treatment. The segment is aimed at practicing healthcare providers rather than a general audience, framing addiction as a chronic but treatable condition and giving a stepwise method for catching risky use before it becomes a diagnosable disorder. Produced with support from SAMHSA, the course continues into diagnosis and treatment management in later lessons.