A California medical cannabis card is a state-issued medical identification card that allows a patient to legally purchase and use medical cannabis in the state. The card is issued by the California Department of Public Health after a qualified physician has completed an approved evaluation of the patient's medical history. With a medical cannabis card, patients can purchase cannabis from licensed dispensaries, access cannabis delivery services, cultivate their own plants, and even participate in medical cannabis research studies. To get your card go to my mmj doctor website and Apply!!