Although I realize it would be nice to have a family practice, I think there is something valuable about having doctors that specialize in childhood issues. We go to South Riding Pediatrics (we live in Centreville) and we love them. One of our children had an organ issue from conception and we received wonderful care from them.
My husband and I go to a family practice in Centreville but we don't feel particularly thrilled about them. They get the job done, but it's hard for me to recommend something that I don't feel very strong about. My husband has "cluster headaches" and we have had some wonderful care (that doctor left the practice recently) and we have had some horrible care. I'd definitely recommend the pediatric doctors though. They are wonderful.
Good luck in your search.
Liz