Dr. Sierra is very nice. Respectful of patients' time, courteous, does all the phone calls herself--no receptionist. She uses high tech equipment, which she uses to take zoom-in photos of your condition and show on her computer in the room. Wants to make friends with her patients. Too bad it comes with a price tag...she's about twice as expensive as my last doctor (in Chicago). $250 for a filling. I'm not sure if it's just her or all Miami doctors are this pricy, but if treatment wasn't so costly, I wouldn't be on this website. Otherwise, an outstanding dentist.