If you are having any issues with your sinuses at all, make an appointment with Cornerstone, Dr. William McClelland!!! January this year, I had sinus surgery with another well-known EENT office in Charlotte. I was miserable for 4 months following the surgery. The Dr. would not take responsibility of his botched surgery. He sent me to an allergy dr. who preformed many tests and couldn't help me either. I was lost! Didn't know where to turn. I got referred to Dr. McClelland at Cornerstone, by a receptionist at my primary Dr.'s office. During our visit, he did another CT scan, and saw that the other surgery was not performed properly. He scheduled another surgery in June. I have been fixed!! Thanks to Dr. McClelland and his wonderful staff for seeing the problem, doing a wonderful job during the surgery and helping me solve a 6 month problem!! I am doing 100% better....please go to Cornerstone, Dr. McClelland, from the beginning!!! Wish I did!!! Joanna DeHart read more