You are in Santa Clara, so going to Stockton to see Sam Baca is not out of the relm of possibilities. Manteca is not that far away either and Rod Ross, gold level coach, is there. However, if you want to stay close, look up Skip Pavone or Ray Santos at Cambrian Bowl. Skip especially can let you know about your PBA potential since he's been out there regionally. Ray has coached up (and done a fantastic job) a lot of youth to the point of decent performances in PBA Regionals. Cambrian Bowl also has a Sport league.
At your level I wouldn't necessarilly jump to a gold level coach. Most of them do not have open appointment times. Rather then are all scheduled with Team USA, and other high level players.
I agree with mrbowlingnut, if you are young about 14 then 190 is a good start. Because most players I see on the Regional PBA (this is not even National) can average over 230 on any house shot at any time. Unfortunately the pace of learning in this game is geared to the young. If you are 30 or 40 and starting back with 190 average then that's still good, but PBA is probably out of reach. Just not enough time at your physical peak to be competative. Though if you pick up quickly enough there's the Senior Tour.
There's PBA Regionals all over the area. You can always enter as a guest and see how you do.
Erin