I take my 4 month old yorkiepoo to the Los Alamitos Animal Hospital. Link here:
animal hospital loc: Los Alamitos, CA - Google Maps
I live in Tustin/Irvine, but work in Long Beach. Although it is not close to my house, it is close to work, and I love them. She has been going there since we got her two months ago. Will be going this week to get rabbies shot. A friend of mine has taken her dogs there for years and recommended them to me.
Good luck!