This might not be too helpful, since I am just now returning to the area, but I feel I should respond since no one else has.
Games Empire in Pasadena is probably the closest game store to you. I think they still hold some netrunner events there. I am planning on meeting up with other players next month at Brookhurst Hobbies in Garden Grove, but that is quite a ways from where you are. I think there are some players that also meet up in Aero Hobbies in Santa Monica as well, but I have not been there.
There is also a BBG guild page for some of us, but it has not been updated too recently: http://boardgamegeek.com/guild/1402
The upcoming Strategicon (http://www.strategicon.net/index.php) also has some netrunner events, but I do not believe they are tournaments.
Hopefully this gets you pointed in the right direction. I am also looking to get back on the tournament scene myself after a long absence.
Edited by Mitchifer, 23 May 2014 - 05:25 AM.