I have a medical marijuana card, can I let my general physician/psychiatrist about it without being revoked?

My parents want my general physician to know. That's the only way they'd agree to let me smoke at home. I have anxiety and been taking xanax and klonopins for 5 years and antidepressants and none seem to work.

So I settled for a legal alternative.

(Is there anything I can tell my physician so that they will approve it, although I have and been using my med card for a few months already. My parents just want approval.)