Meet The Doctor

At our practice, we aim to provide individuals with a comfortable and relaxing environment where we strive to exceed your expectations through professional results and our friendly staff.

Dr. Jason Woodside

Dr. Jason Woodside was born and raised in Haymarket, Virginia, and is the son of a dentist and physician.  He received his education at George Mason University in 1996, where he graduated cum laude with Bachelor of Science degrees in Chemistry and Environmental Science.  He received his dental training at the Medical College of Virginia in 2001, where he also graduated cum laude. Dr. Woodside, his wife Jen, a pediatric dentist, and their two children have made Warrenton their home since 2005

Dr. Woodside is committed to continuing education and has completed over 700 hours of additional dental training.  He stays current with all the latest techniques in implantology, cosmetics, prosthodontics, oral surgery, and sedation that enable him to provide the highest quality of care to his patients.  Dr. Woodside has received many awards and accolades throughout his career, including being named Fellow of the Academy of General Dentistry and International Congress of Oral Implantologists.

Dr. Woodside served on the Board of The Fauquier Free Clinic for 6 years, where he was Director of Dental Services. During his tenure, he was responsible for designing and opening a state-of-the-art facility dedicated to treating the underserved population of Fauquier County.  He continues to donate his time after hours in their emergency clinic extracting teeth for patients in pain as well as fabricating dentures for patients in his private practice.

In his free time, Dr. Woodside enjoys spending time with his family, traveling the world, general aviation, and playing golf and tennis. Dr. Woodside and his wife enjoy living, working, and volunteering in our wonderful small-town community.

He is a member of the following organizations:

  • American Dental Association

  • Northern Virginia Dental Society

  • American Academy of Cosmetic Dentistry

  • International Congress of Oral Implantologists

  • Academy of General Dentistry

  • Virginia Dental Association

Dr. Thomas Sentz

Dr. Thomas C. Sentz attended Randolph Macon College (R.M.C.) where he achieved a B.S. degree in Biology. In 1973, he married his wife Ann, a native of Warrenton, VA., and graduated R.M.C. In 1977, he graduated from the University of Maryland School of Dentistry in Baltimore, Maryland. The University of Maryland was the 1st Dental School in the United States and remains one of the most prestigious schools in the country.

He began his private practice career in Manassas, Virginia where he worked for 3 years with Dr. Jason Woodside's father. He then relocated back to Warrenton where he worked with Dr. Anderson on Main St. In 1986, Dr. Sentz bought Dr. Anderson's practice and, over the years, expanded it into a thriving comprehensive dental office that has been an icon for decades in old town Warrenton. The growth of the office continued when he opened this second location in Warrenton with Dr. Woodside in 2008.

In addition to the continued excellence, he provides his patients he has also devoted an enormous amount of his time to philanthropy. He has volunteered with the Fauquier Free Dental Clinic since its inception. He has treated countless patients in need over the years and has selflessly provided a necessary service to those less fortunate. His desire to serve his fellow man did not stop at the local level. He has made 46 dental and surgical missions to Central America through several nonprofit organizations. He is an active member in Austin Smiles whose focus is on cleft lip and palate repairs and the Belize Mission Project whose focus is General Dentistry. In 2004, Dr. Sentz started The Inter American Health and Development Organization (IAHDO) so he could further his mission work to Central America. With the inception of IAHDO, he has recruited local dentists to join him on his yearly trips to Central America.

In his free time, he enjoys spending time with his wife, two sons, daughter, and grandchildren. He also owns two art galleries on Main Street in Warrenton where he has cultivated his passion for art. He has an exquisite taste in fine art and has helped multiple struggling artists showcase their work over the years. The galleries have also become a local Main Street icon by providing high-quality paintings, sculptures, and antiques that have become internationally known.

Dr. Stephanie Klassner

Dr. Stephanie Klassner brings over 10 years of dental practice to experience to Drs. Woodside and Sentz. She earned her dental degree from the University of Pennsylvania, where she graduated in the top 10 of her class and was awarded the Academy of Operative Dentistry Award for excellence in all areas of restorative dentistry. She was inducted into the Matthew Cryer and OKU dental honor societies. Beyond dental school, Dr. Klassner completed a one-year residency with Lehigh Valley Health Network in Allentown, PA, where she gained experience in complex treatment planning.

Dr. Klassner devotes many hours to continuing education to advance her expertise in the latest cutting-edge dental techniques. She is a certified Invisalign Gold Level Provider and received her Fellowship in the Academy of General Dentistry in 2020. She particularly enjoys all aspects of cosmetic dentistry, smile design, and solving complex dental problems.

She believes it is important to use her talents to give back. Since 2008, she has supported our troops through the Reserve Health Readiness Program by providing dental care to military reservists who are preparing for deployment. This work has taken her all over the world from Germany to American Samoa, the Virgin Islands, and Hawaii. She also volunteers regularly with the Northern Virginia Dental Clinic. 

Dr. Klassner's philosophy is to provide gentle, comprehensive, patient-focused dentistry to her patients. Her primary goal is to listen to your desires and concerns when developing treatment recommendations, minimize discomfort and exceed your expectations with good quality, highly aesthetic dentistry.

Hailing from Scranton, Pennsylvania, Dr. Klassner has found a home in Northern Virginia with her family.

She is a member of the following:

  • American Dental Association
  • Northern Virginia Dental Society
  • Academy of General Dentistry 
  • Greater Washington Academy of Women Dentists
  • NOVA Academy of Dentists

Dr. Susan Griffin

Dr. Susan Griffin is a member of the following organizations:

  • Board Member Northern Piedmont Community Foundation 2006-Present
  • Fauquier Free Clinic Volunteer
  • American Dental Society
  • Academy General Dentist
  • University of Richmond 1976
  • Medical College of Virginia Dental School 1980
  • Eastman Dental Center- General Practice Residency


Dr. Griffin has been on the board of Fauquier free clinic since 2012 and has volunteered her time in their clinic and private practice since its inception.

Dr. Elaine Sours

Dr. Elaine Sours grew up in Northern Virginia. She is graduate of Virginia Tech with a BS in Biology and of VCU-MCV where she received her Doctor of Dental Surgery degree in 1979. After completing her education, she returned to Northern Virginia and joined the dental practice of Dr. Byron Woodside, Dr. Jason Woodside’s father, in Manassas. She has had a successful and rewarding career in general dentistry for over 42 years.

Dr. Sours is a past president of the Bull Run Rotary Club where she has twice been named Rotarian of the Year. In 2019 she was named Volunteer of the Year to the Inter-service Club Council of Greater Manassas (ISCC). In April 2021 she was awarded the Rotary club’s “Unsung Hero” recipient with the ISCC for her Covid-19 response. She is a past president of Historic Manassas, Inc. (HMI) and has been a board member of the American Red Cross-Prince William County.

In her free time, she enjoys travelling and hiking. She is the mother to a wonderful daughter and at home she loves her two miniature dachshunds and Burmese cat.

Dr. Marshall Adzima

          Dr. Marshall Adzima was born and raised in Broad Run, Virginia and graduated from high school in Fauquier County. He graduated Magna Cum Laude from Virginia Commonwealth University with University Honors with both a Bachelor of Science and Doctor of Dental Surgery. Dr. Adzima is excited to return to the area where he was raised and give back to his community.

         In his program, Dr. Adzima completed an advanced course in Prosthodontics with a focus on digital dentistry and 3D printing and is eager to bring this skillset to the practice. He is committed to providing leading industry best practices, and quality care for his patients. Above all, Dr. Adzima is dedicated to service. He volunteered at numerous Mission of Mercy Projects throughout the state of Virginia, including Warrenton, providing free dental care to those in need. He has also taken his aid abroad, serving on a mission trip to Belize providing dental care to pediatric and adult patients. Dr. Adzima is passionate about helping others and looks forward to working closely with the Fauquier Free Clinic.

       In his free time, Dr. Adzima enjoys cooking and exploring new restaurants– ask him about his recipe for sausage and pea risotto! When he isn't trying new foods, you can find him exploring the Blue Ridge Mountains. He has a great love for the outdoors and is looking forward to taking advantage of Warrenton’s proximity to nature. He enjoys trips to many unique mountains and rivers, but the top of his bucket list is a raft trip through the Grand Canyon. His goal is to visit all the United States national parks so be sure you tell him about your favorite when you visit!

 He is a member of the following organizations:

     American Dental Association

     Virginia Dental Association

     Northern Virginia Dental Society


Dr. Quinnie Phan

Dr. Quinnie Phan earned her doctor of dental surgery degree at Virginia Commonwealth University School of Dentistry. She graduated Summa Cum Laude and was ranked number one in her graduating dental class. She was inducted into Omicron Kappa Upsilon, a national honorary society serving the field of dentistry. She has been recognized by the Virginia Chapter of the American College of Dentists (ACD) and International College of Dentists (ICD) for her outstanding leadership, scholastic performance, and potential for impact on the profession of dentistry.


As the daughter of refugee parents, Dr. Phan recognizes that her extensive training and dental education has been a privilege. She sees herself as a life-long student, and is dedicated to continuing education in order to expand her knowledge and improve the quality of care for her patients. She is passionate about dental education and has completed the Academic Dental Careers Fellowship Program (ADCFP) with the American Dental Education Association (ADEA).


Dr. Phan prioritizes having a voice in her community and providing dental care to underserved populations. She has volunteered her time at free clinics and dental mission projects all around the state of Virginia. Her dedication to dental service has also taken her as far as Central America, where she provided dental care for rural communities in Belize.


Outside of dentistry, Dr. Phan enjoys artistic pursuits and has taken design courses at ELISAVA - Barcelona School of Design and Engineering. She is also an avid runner, and has completed two full marathon races. Dr. Phan grew up in Arizona, but has since found herself a home here in Virginia. Her favorite part about running is appreciating Virginia’s beautiful outdoor scenery.


She is a member of the following organizations:

       American Dental Association

       Virginia Dental Association

       Northern Virginia Dental Society