About Our Doctors

Elizabeth T. Shaeffer, D.D.S.

Dr. Shaeffer has been setting the highest standards of excellence in family dentistry for over 35 years! An esteemed member of the dental community, she is a graduate of the Georgetown University School of Dentistry and an active member in many leading dental organizations, including the American Dental Association, Virginia Dental Association and the Northern Virginia Dental Society. In her spare time, Dr. Shaeffer enjoys giving back to her community through the Northern Virginia Dental Clinic and the Goodwin House retirement community. She also enjoys gardening, oil painting, and cheering on the Nationals.

Gregory Y. Lakas, D.D.S.

"It is with mixed emotions that I announce that I will be retiring from the practice of dentistry on or about October 1, 2020. I am excited that I will be able to spend more time with my family. My grandchildren are the light of my life. But I leave with profound sadness that I will no longer be seeing my patients/friends."

"I have been practicing dentistry for more than 42 years and have truly enjoyed being a dentist. I have taught at Georgetown Dental School, opened a dental clinic at SOME for the indigent of Washington, DC, I have been in private practice in Potomac, MD and been in my Arlington, VA office since 1981. I truly feel that my office was my home and you, my wonderful patients, are my family."

"I leave the practice in the capable hands of my business partner, Dr. Elizabeth Shaeffer. She and with the help of our new associate Dr. Brigid Mooney, as well our Hygienists, will continue to treat your dental needs."

"Thank you again for the honor and trust of being your dentist."

Gregory Lakas, DDS


Brigid B. Mooney, D.D.S.


Dr. Mooney is excited to join Clarendon Family Dentistry after almost a decade practicing dentistry in Northern Virginia. She is trained and experienced in the most advanced dental and cosmetic procedures, including invisalign, veneers, and other minimally invasive techniques to improve your smile. Dr. Mooney is dedicated to taking continuing education courses in order to provide the most comprehensive approach to oral health. She enjoys treating children and adults, and looks forward to welcoming your entire family to our dental practice.

Dr. Mooney was trained in Texas, graduating from Austin College with a degree in Spanish Literature. She continued her education, receiving a Doctor of Dental Surgery degree from University of Texas Health Science Center in San Antonio, Texas. After graduating from Dental School, Dr. Mooney and her husband, Brandon, moved to Northern Virginia. She enjoys spending time with her children, hiking and the outdoors, and volunteering with community organizations. Dr. Mooney is an active member and volunteers in many capacities with the Northern Virginia Dental Society, the Virginia Dental Association, and the American Dental Association.

Mino Economides, D.D.S.

Dr. Economides has been providing the best possible dental care to his community for over 40 years! A valued member of the dental community, Dr. Economides earned his dental degree from the Georgetown University School of Dentistry, and is an active member in many leading dental organizations, such as the American Dental Association, Northern Virginia Dental Association and the Delta Sigma Delta dental honors fraternity. Outside the office, Dr. Economides enjoys gardening, painting and playing golf.

Drs. Lakas & Shaeffer, DDS

  • Drs. Lakas & Shaeffer/Clarendon Family Dentistry - 1301 N. Highland St., Arlington, VA 22201 Phone: (703) 522-8894

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