UPDATE (3/26/18): I wish I could leave a 10-star review! I had two other fillings fail over the weekend, and woke up in tremendous pain this morning. Dr. Khalifa got me in by 10:00 am, got me numbed up right away, and then finished 2 root canals in around an hour. Like I said in my previous review, Dr. Khalifa is the BEST endodontist in the valley, and his staff is top notch as well.
ORIGINAL (05/2017): If you need a root canal, there is no one better in Phoenix than Dr. Gus Khalifa! I had to have an emergency root canal yesterday (the day after Memorial Day so the wait was long, but they gave me a topical analgesic in the waiting room so that helped) with Dr. Khalifa, and I must say that I was impressed. Numbing was virtually painless due to Dr. Khalifa's technique, he was done in 35 minutes, and I woke up today in virtually no pain.