Hi,
My son (19 mos) has a ton of food and seasonal allergies and I was in the same boat as you. We found a great doctor at Associated Allergists. We see Dr. Donnell in Highland Park, but there are several locations. I really like Dr. Donnell and he communicates really good with my pediatrician. I know he's at two other locations also, but I am not sure which ones they are. There are other doctors in the practice, but I don't have personal experience with them (although I have heard Dr. Nimigata is excellent also, but it takes a lot longer to get an appt with him.) I've attached the link to their site if you are interested in checking it out.
http://allergists-asthma.com/index.shtml
I hope this helps. Let me know if there is anything I can do to help.
C.