I am in north County so I can't be a ton of help with actual doctors. That said, Dr. Washkowiak at Scripps La Jolla is great. You may also want to check out doctors that deliver at Scripps Mary Birch as that is known as a great hospital for maternity.
Mary Birch is Sharp affiliated not Scripps, but my friends delivered there and were very pleased with the process. I wish my insurance included Sharp because I would go with Mary Birch.
One suggestion, schedule a tour of labor and delivery and ask the nurses on staff who they have heard good things about from other patients. I was able to choose my Scripps Dr. based on feedback from a nurse. Good luck!
BTW I noticed that you are due in August-me too! Please check out the August 2013 board. We would love to have you. Congrats!