M.J.
This will depend on your health plan. If you have Kaiser, we like Dr. Rodney Barron. He's really sweet with our kids and makes the extra effort. For example, we were leaving on a flight out of state the next day, when our daughter was sent home from daycare with a huge rash. He was booked but fit us in between appts. (ended up just being hives, but I really appreciated his effort just in case it was serious).
When we were out of Kaiser, our oldest saw Dr. Fern Takemoto near Mercy San Juan in Carmichael (a quick drive from Roseville). She's really petite and not threatening at all to kids. Our son really liked her and so did we. Very open minded about approaches to parenting -- for instance, didn't get on our case because we chose formula feeding.