I went to Dr. Nieva when she practiced in Hazelwood, MO. I was panic stricken and terrified. She calmed and reassured me and helped make a difficult time an almost pleasant experience. I haven't seen her since she relocated to south county, but that's where I'm going, I don't care how long I have to drive, or how far her office is, she is worth the trip. i have never encountered such a compassionate person who strives to help a really scared patient. I highly recommend this dentist. She's awesome.