As someone who just matched in a California residency, I can say that it's probably an entirely different process than applying to medical school. I only got one med school interview in California (and I applied to almost all the programs), but I interviewed at four programs (of seven I applied to) in CA for residency. It's a great place to live, so of course they're going to get a lot of interest. But there are many many residency programs in the state and they run the gamut in terms of competitiveness and prestige, so if being in California is what you want, chances are good that you can find a residency program that will be happy to have you. If you will only be happy with UCSF or UCLA, well, that's a different story...
Good luck!