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Mark S Jefferies DMD PLC Whether you need to repair or replace teeth or desire a natural-looking smile makeover, Dr. Jefferies, your trusted dentist in Herndon, VA can help you achieve your goals. Patient Testimonials See what our patients are saying about their dental care in Herndon, VA. I've been a patient of Dr. Mark Jefferies since 2011 and continue to be impressed by the very high level of professionalism of all of the staff.

Also, everyone, and I do mean everyone, in the practice are warm and caring folks who truly do care about you as a person as well as a patient.
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Reviews (8)
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Ana Maria Cambiaso
May 19, 2022
Overall outstanding. Excellent customer service. Dr. Jefferies is professional and caring. No waiting time, everything runs smooth. The dental office has a great appearance always. Dr. Jefferies is our family dentist for more than 10 years and we are very fortunate. I recommend him to everyone in town. He is the best!
Robin H.
Feb 28, 2022
This was my first visit back since the pandemic and it was like putting on your most comfortable sweater on a cool winter morning! The staff is still as personable and professional as they were from the first day I met them! The office is equally as warm and inviting! I've said it before and I'll say it again, this is the best dental experience I've ever had!
Jon Burns
Nov 25, 2021
I went to see Dr. Jeffries based on a trusted recommendation and I'm super pleased to have found my new dentist. I became dissatisfied with my previous dentist because she seemed to continue to shrug off problems I was having without doing anything. In one spot, the problem was with a tooth she had filled, but she explained that because of where the filling was, that was the best that could be done. Dr. Jeffries figured out what was going on with both problems and fixed them.

One required re-filling the tooth that was supposedly unfixable. Unlike any other time in my life, the tooth immediately felt like it was "right" without that weird feeling that you have to get used to a new bite. More importantly, the problem was solved. He's very skilled and although I consider it icing on the cake, very friendly and helpful too. I had a lot of questions and he gladly entertained them all. Great dentist!
Fran O'Neal
Nov 21, 2021
Dr. Jefferies and his team are first-class in every way. Our family has been going to him for many years and he and the team are always masterful at the art of gentle, effective dental care. You will not find a better dentist and support team!
Rich Sr
Nov 09, 2021
I have been a patient of Dr Jefferies for almost 15 years and I have never had any problem with his dental work. He gets it right the first time. Also any time there was an adjustment needed after a procedure he works me in as best he can around his other appointments and takes care of it. He is a extremely good listener, is very pleasant and professional. I trust him with my dental work and wouldn't work with anyone else.
Richard Bowker
Aug 26, 2021
We were lucky to have found Dr. Jefferies a number of years ago and we are most appreciative of his consummate skills, caring manner and good humor. His staff are highly professional, skilled, and are always willing to help. This is a happy office team, and this atmosphere is a direct reflection of Dr. Jefferies' leadership skills and professionalism.

My wife and I drive a long way to go to his office because we know we will always get the best possible care. My son and his family also are patients of Dr. Jefferies' practice. My most enthusiastic and unqualified recommendation: Painless dentistry at its best.
Bethany Hemphill
Aug 12, 2021
I love this practice. They are very respectful of my time. I am in the chair at my appointment time. The cleanings are thorough. We are a military family and have moved several times and this is one of the best. I am the type who loves teeth cleanings and I don't miss a semi-annual appointment.
Patrick Mills
Nov 28, 2019
When I was looking for a new dentist many years ago, I was looking for someone whom I could trust, who was skilled, with awesome hygienists. Check, check, and check. Dr. Jefferies does not try to sell you on expensive services or procedures that are not necessary. I've had crowns and fillings over the years, with very little discomfort. The hygienists are awesome. They are friendly and skilled with their instruments. Add to all of this a kind, professional office staff, and you've found the perfect dentist. Really.