I like idea of incorporating lung image into logo as #5. (those are lungs, correct?)
I am leaning more towards a "horizontal" orientation as in #5, #7, #8.
#7, I do want AAC letters in the logo as you've done, but not in the block format. I am thinking I want to use the letters to form a memorable image.
Maybe try incorporating recognizable letters AAC to form recognizable lungs and maybe a nose image out of the "&" sign, or perhaps the C.
Don't use all capitals. Include space between Allergy & Asthma. Make the "Center, P.C." slightly smaller than the "Allergy & Asthma" (as in #5)
I hope this isn't too long a comment, thanks to all for efforts.