About Mark S. Jefferies, DMD

Mark S. Jefferies, DMD, PLC is a dental practice in Herndon, VA that takes a conservative approach to dental care. The team is dedicated to helping patients maintain lifelong dental health, from disease prevention to the replacement of missing teeth and smile makeovers. The dentist and staff are described as professional, friendly, and welcoming. Patients have praised the dentist's great skill and the lasting, beautiful results of the dental work. Many patients appreciate the gentle and caring approach, making dental visits comfortable and personal. The practice has been recommended by coworkers and Rotary colleagues, indicating a high level of trust and satisfaction among patients. Recent reviews highlight the friendly and professional cleaning experience, the detailed attention to xrays and cavities, and the overall positive interactions with the staff and dentist. Patients also value the office's cleanliness and the dentist's patience and expertise, with some having been patients for over 10 years.

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Reviews for Mark S. Jefferies, DMD

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  • May 2026

    My husband and I have been going to Dr. Jeffries’s office for many years now and we have had no complaints. We love the staff, we truly appreciate the care and concern we receive from Dr. Jeffries. We would highly recommend this dental practice to anyone looking for superior dental care.

  • May 2026

    Dr. KIm was wonderful, made me so comfortable and took her time. She made sure I was not in pain. She explained all my options and I didn’t feel pressured towards any procedure. She has great bed side manner and truly cares. Best dentist I have visited in a long time.

  • May 2026

    Still an extremely happy patient!
    Friendly and efficient. Very trustworthy as well - they are always honest and open about anything that needs to be done and never try to sell you something you don’t need.

Hours

Monday: 8AM - 5PM
Tuesday: 8AM - 5PM
Wednesday: 8AM - 5PM
Thursday: 8AM - 5PM
Friday: 8AM - 1PM
Saturday: ClosedSunday: Closed

Tips

accepts credit cards accepts insurance by appointment only