Very unprofessional. The tooth he treated failed. I've endured more pain and infection from this dentist missing a root when performing a root canal. When I went back to see him about my pain he came into the room yelling at me. He was defensive and would not let me talk. I now have a large infection due to dr. kosakoski missing a root. I would not recommend this Dr to anyone. He is rude and down right mean. Because of his bad treatment I'm going to now loose my tooth.

Submitted April 4, 2014