Winchester Endodontics



Winchester Endodontics




Winchester VA


Winchester Endodontics

Thank you for your interest in Winchester Endodontics, Duy T. Do, D.M.D. LLC & Katherine G. Thomas, D.D.S.. We are specialist members of the American Association of Endodontists. We look forward to being of service to you. Our expert team, led by highly respected endodontists Dr. Thomas and Dr. Do, will provide you the highest standard of professional care in a friendly, comfortable environment.


Endodontist Duy Do, D.M.D.

Dr. Duy Do obtained his Doctor of Dental Medicine degree from Harvard University in 2012. He was didactically trained at Harvard Medical School and did clinical rotations at Massachusetts General Hospital and Boston Children’s Hospital. After dental school, Dr. Do finished one year of General Practice Residency and one year of Advance Education in General Dentistry where he received formal trainings in implant placement and restoration, periodontal surgery, non-surgical endodontics, and esthetic dentistry using CAD/ CAM technology. After residencies, Dr. Do worked as a general dentist for 3 years in Iowa before discovering his true passion for the field of endodontics. Dr. Do subsequently completed his endodontic training at Columbia University in the city of New York. At Columbia, Dr. Do was extensively trained in the fields of microsurgery and regenerative endodontics.

Dr. Do is excited to be back to Virginia and is committed to providing the highest quality of endodontic care as well as serving the communities where he grew up. With his past experience as a restorative dentist, Dr. Do hopes to work collaboratively with your general dentists to help you restore your natural teeth to full function and esthetics. In his spare time, Dr. Do enjoys running, drawing, visiting the newest restaurants, and travelling to Europe with his friends and family.


Endodontist Katherine G. Thomas, D.D.S.

Dr. Kathy Thomas, along with her dedicated staff, has been proud to serve the Winchester community as an endodontist since 2006.

Dr. Thomas was raised in Indiana where she earned her dental degree from Indiana University School of Dentistry. She immediately received a commission in the US Navy and served her country for seven years, including deploying on the USS Puget Sound in support of Operation Desert Storm to Saudia Arabia. Dr. Thomas left the Navy to attend Virginia Commonwealth University where she completed an Endodontic residency. She has published research in the Journal of Endodontists and is committed to dental continuing education.

Dr. Thomas is a member of the American Dental Association, American Association of Endodontists, Virginia Academy of Endodontists, Virginia Dental Association and numerous dental study clubs. She donates endodontic treatment through the Virginia Donated Dental Service program.

Dr. Thomas resides in Winchester with her husband and teen aged daughter and twin sons. When not working, Dr. Thomas enjoys traveling, boating, reading and most importantly, spending time with family and friends.


  • Root Canal Therapy
  • Endodontic Retreatment
  • Apicoectomy
  • Cracked Teeth
  • Traumatic Injuries
  • Pulp Regeneration


  • American Dental Association - member
  • Virginia Dental Association - member
  • American Association of Endodontists - member
  • Virginia Academy of Endodontists - member
  • Member of numerous dental study clubs.


  • Monday - Thursday9:00 AM - 5:00 PM
  • Friday9:00 AM - 4:00 PM
  • Saturday - SundayClosed