I think you're best bet in that area is Greg Brandt, he's around the North Hollywood section. Just do a google on his name, he has an extensive website. He's very experienced.
The other person I would recommend is Mike Peters, a luthier located in Playa del Rey. He's done a lot of work for me, the guy knows his stuff.
And of course there's German Vasquez Rubio, I understand he does repairs in addition to making guitars. You can google his site, I believe he's located just a few blocks off La Brea on Adams Street.