I was referred to Dr Khan by a coworker. At the time, I was having issues with my molar that was recently filled by my previous dentist. After going back for numerous adjustments, I was told that the tooth is cracked and needs a root canal, post and a cap. This would cost me over 2 thousand dollars. I went to Dr Khan for a second opinion. He took multiple pictures and evaluated the tooth thoroughly. He recommended I go with the most conservative treatment, i.e replacing the filling. He suggested that if the replacement did not take care of the problem, then he would look into doing a root canal. Its been 6 months and the tooth feels great. I found Dr Khan to be a very honest and gentle dentist. I live in DC and have no problem driving 45 minutes to see him.