Dental Staff

All our professionals at American Dental maintain the highest levels of accreditation and pursue ongoing education to stay abreast of the latest trends in dentistry.

Gainesville, VA Dentist Dr. Steve Pleickhardt

Dr. Steve  Pleickhardt

Dentist  Bristow, Gainesville, Haymarket, Manassas, Nokesville

American Dental

Dr. Pleickhardt has been practicing dentistry for over thirty-seven years in Virginia, Moscow, Russia and Prague, Czech Republic. Dr. Pleickhardt attended Georgetown University School of Dentistry in Washington, DC and began his practice in 1985 after becoming licensed by the Virginia Board of Dentistry.

In 1996, Dr. Pleickhardt began a period of international travel and practice. He provided dental care for the diplomatic and expatriate communities of Moscow and St. Petersburg, Russia and after three years moved to Prague,Czech Republic where he opened the first American Dental office in 2001. During this period he was founder and President of the American Dental Society of Russia as well as a member of the American Dental Society of Europe.

Dr. Pleickhardt holds certificates in Orthodontics and Laser Dentistry and is provider of Lumineers Cosmetic Veneers and Invisalign Orthodontics. Additionally, Dr. Pleickhardt has incorporated the use of the iTero Scanner 5 D to take digital impressions of crowns, implants and Invisalign Orthodontics.

In addition to dentistry, Dr Pleickhardt has a busy family life with his wife and two sons attending George Mason University plus three "Fur Babies". He has served as President of his Home Owners Association for over a decade. In March, 2021 Dr. Pleickhardt entered the political arena and is a former  candidate for the House of Delegates in the Virginia General Assembly.  You may notice Dr Pleickhardt and his wife, Katya, walking in Bristow with Sampson Niara and now Natasha ! Honk your horn and say "hello" when you do!



Dr. Than Tran

Dentist in Bristow, Gainesville, Haymarket, Nokesville and Manassas

Dr. Tran received her Bachelor of Science degree in Chemistry from George Mason University in 2016 and proceeded to earn her Docotor of Dental Medicine degree at Midwestern University in Arizona in 2022. Dr. Tran received  a Practice Management Award in her final year of training having demonstrated exceptional patient care management. 

Dr. Tran is fully trained in all aspects of dentistry, including preventative, restorative and with a focus  in cosmetic dentistry. Her passion is providing dental care to improve overall oral and systemic health while  providing beautiful smiles which in turn boost one's self confidence and quality of life. 

Dr. Tran is constantly learning about the lastest technological advances in dentistry through continuing education and is dedicated to deliver the highest quality of  care to her patients.

When not working, Dr Tran enjoys trying new cuisines and learning about new cultures through travel. One of her secret life goals is to travel to all 50 US states before she turns 50!

We are so pleased to have Dr. Tran join American Dental- she is a gentle and compassionate dentist that you will enjoy!


Dr. Paul Harris

Dentist in Bristow, Haymarket, Gainesville, Nokesville and Manassas

Dr Harris graduated from the University of Maryland at Baltimore, College of Dental Surgery in 2000.He has been practicing dentistry for over 21 years and attends the latest Continuing Education courses to provide our patients with the best care possible. Dr Harris has a deeper connection  to Dr. Steve Pleickhardt having been a part of Dental Associates in Falls Church, Virginia. Dr. Pleickhardt began his dental career with Dental Associates in 1985 until 1996.

When not caring for patients, Dr. Harris spends time with his wife of thirty years and their two wonderful children. He is a USAF veteran who cherishes serving his country. He often volunteers his services in the local free care dental clinics in Northern Virginia and he is a Senior Member in the Civil Air Patrol of Virginia.

Lastly, Dr Harris is the proud father of a son with Autism and a scholar athlete daugther who attends the Thomas Jefferson High School for Science and Technology who also volunteers at their Athletic Booster Club.


Dr. Eric Capps

Dentist Bristow, Gainesville, Haymarket, Manassas, Nokesville

Dr Capps is a Virginia native. He grew up in Fairfax County attending W.T. Woodson high school and achieved his undergraduate degree in Physics from Emory University in Atlanta.  His dental education was received from VCU/Medical College of Virginia where he graduated in 1986

Dr Capps believes strongly in continuing education, and he achieved his Fellowship in the Academy of General Dentistry (AGD) in 2005.  This status is only awarded to six percent of dentists in the US and Canada for achievement in Dental continuing education.

Dr Capps completed a 350-hour program in Dental Implant surgery and prosthetics provided by the American Academy of Implant Dentistry at Howard University in Washington DC.  He has surgically placed and restored dental implants since 1996. Dr Capps is also certified in Invisalign orthodontics and in the Lumineer dental veneer system which allows for dramatic cosmetic results for those who want to improve the appearance of their smile.

Outside of the office, Dr Capps enjoys travelling with his lovely wife, golfing, skiing and hiking.  


Karla Maradiaga, RDA

"I am originally from Guatemala. I started working in the dental field in 2013 as a general assistant. I enjoyed  dentistry and working with patients so much that I became a Registered Dental Assistant, from Northern Virginia Community College.

My priorities are to always make patients feel welcome and make them feel comfortable. In my spare time, I love spending time with my husband and three beautiful children, and our big and lovely dog (Rocky). As a family we enjoy camping, going to the beach and playing with Rocky. I look forward to seeing you at your next visit to provide all the best care we provide at American Dental."


Sue Baek, RDH

Sue lived and worked in New York city prior to coming to Virginia. She is very gentle and precise rendering dental treatment to her patients- everyone raves about her care!  Sue enjoys playing golf and spending time with her husband exploring the great outdoors of the DMV!


Rachel Johnson, Front Desk Concierge

Rachel enthusiastically joined the dental field in 2014  after she completed dental assistant training school and received her x-ray certification through NOVA Community College. Rachel is a perfectionist at everything she endeavors  to do and is focused on patient services at American Dental. She is the oldest of ten children and enjoys painting, camping, kayaking and spending as much time as she can with her family. Please welcome her to our growing American Dental family!


Karina Nelson, Chairside Assistant

Karina brings to our practice an extensive knowledge of dentistry having completed a doctor of dental medicine program in her home country of Bolivia. While being detailed oriented she exhibits great compassion for all her patients during her work day at American Dental. The most rewarding aspect of her professional is to see people smile- Karina regards this as the ultimate validation of her hard work in the dental office- When she is not at American Dental she enjoys spending time with her husband and children.

Ellie Hart, Front Desk Concierge

"I was born and raised near Myrtle Beach, South Carolina. I came to Northern Virginia by way of Florida over 20 years ago. After a long career as a perfusion technologist in open heart surgery, I redirected my focus to insurance and customer service. I enjoy making patients feel welcome and at ease, while navigating the maze of insurance coverage. In my spare time, I enjoy reading, podcasts, and crochet, as well as board games, movies, cooking, hiking and going to the beach with my 3 nearly grown kids.”

Karen Armstrong, RDH

Karen Armstrong began her dental career as a dental technician in the U.S. She got an honorable discharge from the military and immediately applied to dental hygienie school. Karen attended San Joaquin Valley College in California and graduated in 2007. Mrs. Armstrong is married with two children and a dog. Her family moved to Virginia in 2018 and happily resides in Prince William County. In 2022 Karen will be celebrating  24 years in dentistry creating healthy smiles!


American Dental 9070 Devlin Road, Suite 110 Bristow, VA 20136 (703) 753-6695‎