Dr. Nguyen has been my dentist for several years. I have recommended co-workers and family members to her practice. She has a warm chair-side manner and is very through in her work. I have visited her for routine dental care, fillings, a root canal and for two crowns (not front). Pain has been minimal and she has been understanding of my dental phobia. I have never had any difficulty with insurance billing, in fact the office informed me that when they were planning to no longer participate as a provider with my current carrier. Parking is also easy, a rare occurance in the Tyson's Corner area.