Thats some bogus shit...
If your not on anything then just find a different 420 doc.
Call ahead and ask the receptionist if you need to be on meds to get a prescription if she says yes ask if they are strict about it and explain to her that you don't wanna take any bullshit meds that will fuck with your physiological conditions.
Explain to him/her that you don't want to take anti-depressants because you have heard too many stories about people killing themselves once they got on the anti depressants or once they get off and thats not a risk you want to take.
Also tell him/her that you don't want to take anti anxiety meds because then you might become addicted or nonfunctional without them.
You can also say you have insomnia as most people do, if you can't sleep within 15minutes after laying down then there you go.
Or you can just take a bottle of Tylenol and say that the doctor said its better on your stomach and liver then other painkillers for your migraines.
Or say you ditched the meds because they made you sick and you noticed that you still need a little help which is why you want to get a marijuana recc.
But since you're renewing it, just mention you already have one and that you would like a renewal because the cannabis have help you with your symptoms.
Some docs don't require you to have a prescription to some bullshit garbage, Id suggest that you try to find one without before you go jumping through loops.
Use weedmaps bro here are 3 clinics in san diego (click the tab that says dispensaries and click doctors then use ur zipcode)
https://weedmaps.com/doctors/california/south-san-diego/weedmaps-speacial-45-one-year-recommendation?c=search
https://weedmaps.com/doctors/california/south-san-diego/centric-wellness?c=search
https://weedmaps.com/doctors/california/south-san-diego/green-cross-evaluations?c=search