This page will show you How to Get a Medical Marijuana Card. As of March 2009, 14 US states have passed laws legalizing marijuana for medical use. These states include Alaska, California, Colorado, Hawaii, Maine, Maryland, Michigan, Montana, Nevada, New Mexico, Oregon, Rhode Island, Vermont and Washington. Many of these states require patients intending to use marijuana for medical use to register first–but what exactly required depends on the state. If you are considering talking to your doctor about using marijuana for your medical condition, then you will want to find out what is required to register in your state before your visit as medical documentation in some form is necessary in every state.