I used the Children's Primary Medical Group after my daughter was born and to be honest, my experience wasn't very good. I had orginially chosen the female pediatrician in the La Jolla office but she was out of town when my daughter was born and I was forced to see 2 different male doctors there. I was very insistant on breastfeeding and both encouraged me to no end to supplement with formula due to my daughter's jaundice. At the time, this broke my heart but they kept telling me it was best for my baby. I just wish that they would have taken my wishes into consideration. After speaking with a lactation consultant a couple days later, she told me I could/should stop with the formula and I needed to stop in order to have my milk come in. She also noted that I should have never done it in the first place. I chose to change offices based on this and the lack of connection I felt with the pediatricians on staff.
I switched to Dr. Lynne Scannell in Santee upon the lactation consultants recommendation and we love her! She has been amazing with us as parents and our daughter. I highly recommend her. I don't want to discourage you from trying the other group, I just wanted to give another perspective. But everyone has a different experience. Trial and error, I swear you just have try things for yourself and find the place that fits your family.
Good luck!