Finally found a dentist in DC, a task I had been avoiding unnecessarily. Dr. Mongelos took a lot of time to convince me that my cracked tooth was too far gone to correct properly with a crown. He is very gentle, and this implant was much less painful than with my previous dentist. He was very knowledgeable with insurance billing. His office was able willing to coordinate the billing of two insurance companies, which several larger dental offices I called refused to do.