This study explores cannabis diversion and its associated factors through the lens of procedural justice theory and deterrence concepts. A quantitative research survey was conducted among 202 medical cannabis license holders in Israel to assess the prevalence, frequency, attitudes, trust in the healthcare system, and fear of punishment related to medical cannabis diversion. Our findings revealed that 60% of license holders engage in medical cannabis diversion, primarily driven by altruistic motives. Attitudes toward diversion were found to act as mediators between trust in the healthcare system, fear of punishment, and the act of diversion. The widespread occurrence of medical cannabis diversion underscores its significance and warrants focused attention. The disparity between criminal law and practical realities necessitates policy revisions concerning medical cannabis.