I am getting into the habit of going every 6 months, regardless of if there's anything major I need to discuss.
I have just started on lithium, and he has told me to phone in any time I have an issue, and I am also seeing him in January-3 months down the line.
If I need a refill script, he writes me one, and faxes it to my pharmacy.
It costs about $25! Paid by my insurance, as everything for Bipolar has to be, by law, covered by insurance