sb420 refers to Senate Bill 420 (Health & Safety Code 11362.7). doctors don't issue this, it's an ammendment to the Compassionate Use Act (aka prop 215). it outlines guidelines on growing and possessing medical cannabis.
FYI, doctors issue medical marijuana recommendations. not prescriptions, only recommendations.
I personally suggest avoiding Dr. Alfonso Jimenez, I had bad service and a hard time getting verified, etc with Dr. J. He was a little "tooo" supportive of Prop 215, ya know what Im saying... man lol \
I would ALWAYS suggest Medicann or ACC over any alternative simply because they have near 24HR vericatiosn, where LEO can get you verified 24/7 in the worst situations, and THAT is ultimately WHAT mstters.
Good luck. Man we need to liven the forum up a little bit...sheesh. LOL