When signing up for an ID card, you’ll have to register with the Medical Use of Marijuana Program. The registration fee is about $50, unless you’re below the federal poverty level. You can find more information here.
What are the approved conditions?
To qualify for a physician certification, you’ll need to demonstrate you have one of the approved conditions that are considered debilitating and might be alleviated by medical grade marijuana. These can include but are not limited to: AIDS, ayotrophic lateral sclerosis (ALS), cancer, Crohn's disease, glaucoma, hepatitis C, HIV, multiple sclerosis (MS), Parkinson's, insomnia, or anxiety, among others.
What kind of doctor do I have to go to?
You must go to a doctor or certifying physician who you have an established and “bona fide physician-patient relationship” with. This is just to prevent doctors from giving out baseless medicinal marijuana certifications to everyone who walks through their doors. Basically, as long as you go to a doctor you trust who has some sense of your medical history and is likely to support your exploration of medical marijuana use, you should be fine. However, under the law, a bona fide physician-patient relationship specifically means you have to go to a doctor you’ve already had a complete clinical visit with in the past.