Had used the group for a couple of years for my routine cleanings. I Recently had to have a small filling put in. What should have been a routine filling has turned into a nightmare. After Dr. Nielsen filled the tooth, I had tooth pain ( which wasn't present prior to him working on my tooth). He said he couldn't figure out what was wrong and referred me to an endodontist to look at the tooth thinking it was a root issue. I also decided to get a second opinion from a regular dentist as well. Both the new dentists, on different appointments and who are not affiliated with each other, were very disturbed by the what they saw. They asked if Dr. Nielsen was a young new dentist with little experience. They both went on to say that he completely and unnecessarily over filled and destroyed my tooth to the point that I now need a crown. Please save yourself the pain and anguish of going to Dr. Nielsen. The staff is friendly enough for cleanings and although Dr. Nielsen is very friendly, he is a terrible dentist. And believe me, I have had my share of dental work done over the years, and have had both good and bad dentists along the way. But Dr. Nielsen is the worst. by far. Nice guy-terrible dentist