The prevalence of cannabis use for purported medical indications increases in stated that adopt medical marijuana laws. A firm understanding of the association between cannabis use and substance use disorder treatment management is critical to the modern practice of addiction medicine. This lunchtime luncheon didactic will review the literatures related to cannabis use and other substance use disorders. A discussion addressing modern addiction medicine practices and implications for patients who use cannabis will be provided. The bulk of the workshop will then introduce several practical clinical approaches that addiction medicine clinicians can use when providing medical care to patients who use cannabis, including those who have been issued cards authorizing the possession and use of cannabis for purported medical indications. The session will conclude by introducing a motivational interviewing technique that can be used to evoke a patients' own motivation and commitment to change their cannabis use.