I never actually went to these doctors, but I got a bill from the after going to Kessel Dermatologists because they did the testing of my moles that were removed. They sent me a bill saying my insurance was rejected. I called them and left a couple messages. I never heard from them. After about another month, I got another bill. Still with no insurance payment. I called again, sometimes being on hold for 15-20 minutes. I left several messages. Still never received a phone call back. So, I called the doctors office directly and they had a Donna from billing call me. She was absolutely rude and basically called me a liar about saying that I called many times and left messages. In the end, she basically threatened to not submit my claim and blamed Kessel for not providing her with the proper insurance information. It is a shame that these doctors use such an unprofessional, inept person to handle their billing.