Stevens Creek and Putnam Lexus both suggest Auto West Collision down in San Jose (Brokaw Rd/I880 area) to me. I just took mine in to have similar damage, caused by a similar person, replaired on my IS350.
I don't know that they're Lexus certified but they do have a Mercedes-Benz cert up on the walls. They even prep'd me on how to deal with the insurance company. (e.g., insist on factory parts, etc...)
So far so good with them. Ask me again on Friday, when I get my car back! :)