I would get allergy shots on the 4th floor. It was really convenient and it didn't hurt all too much. The staff up there was very friendly and very understanding that kids don't like shots. They would also give you advice on if your arm starts to swell from the allergy shot or what to do if it starts to get stiff.
On the first floor, my sister would go to the dermatologist. I don't remember his name but he was very helpful. He was at a decent price also. The doctor is very knowledgeable about his field.
On the first floor also, there was an expert eye specialist. I used to get my vision checked there and get my eye glasses prescription. He was very nice and made you feel comfortable about putting numbing eye drops in your eyes or when the machine would need to touch your eyeballs.
All three are great doctors.