I went to Dr. San Marco to treat the same tooth I'd had a root canal on 16 years earlier. The treatment was done on Friday morning. The tooth was decaying under the crown and I had advanced infection. Dr. San Marco was quick, competent and caring. How caring? When I was still having pain on Sunday, he met me at his office in the late afternoon, and saw me again on Monday after work to ensure I was making progress. I have nothing but good things to say about this endodontist and his competency.