Thankfully, Californians enjoy some of the easiest access to medical cannabis in the nation. One out of every twenty adults in California (1.4 million people) are estimated to have used cannabis medicinally to treat a serious condition. Even more incredible, 92% of patients found that cannabis helped. So how do all of these people know how to get a medical marijuana card? Simply put – a patient qualifies for cannabis by getting a written recommendation from a licensed physician.