I'm going to put in another good word for Scottsdale Children's Group. We have been seeing Dr. Anne Garret at Scottsdale and Osborn for about a year now and I have been very impressed with her. She always has a lot of good information for me and I always leave her office with some reading about whatever ails my son. The nurse practitioner there (I can't remember her name) is also excellent. We recently decided to start seeing Dr. Susan Burke at the 74th and Shea office since this is closer to where we live, but we haven't had a need to go in yet so I can't really tell you anything about her. I've been really impressed, though, by the entire office staff as they are very friendly and helpful. Same day appointments are no problem if you call in the morning and I have found waiting room times to be very reasonable.
Just a general word of advice. It has been my experience that if you are worried about something and you really want to get a response back quickly, you should ask to talk to a nurse. They really do know alot and will usually get back to you faster than the doctor.