Dr Sajjadi is always very polite and friendly. She and her assistant let me know ahead of time how much the procedure will cost and how much my insurance will cover. They have a pretty flexible when it comes to appointments and schedule late evening appointments once a week and even Saturday ones! I have been going there for a couple years now. I"m very sensitive when it comes to my teeth, but they have been taking great care of me through cleanings, x-rays, cavities, root canals... They were particularly cautious when I was pregnant, which was great. Overall great services for good prices. I'd definitely recommend Potomac Dental Clinic!