Since 1996, it has been legal to purchase and use marijuana for medical purposes for those who have an MMJ ID card. They may do so from anylegal cannabiss dispensary in the state.

California

Weed Laws in California Legal Medical Marijuana Laws

California Marijuana Law, Health & News, MMJ California
  The day will soon come when your favorite medical marijuana dispensary will also sell and deliver adult-use marijuana, thanks to Proposition 64 (Prop 64), which voters approved in November 2016. If you’ve been following cannabis…