Meet Our Doctors

Dr. Arpi Khare is the proud owner of Arlington Pediatric Dentistry and Arlington Dental Studio and a Board Certified pediatric dentist. She was raised in Virginia and attended the University of Virginia for her undergraduate degree. She then went on to the University of Maryland for her dental degree, where she graduated magna cum laude at the top of her class. Following dental school, she completed an additional two years of pediatric dental training at Virginia Commonwealth University. She has been practicing in the DMV area for more than five years and was voted a top dentist by her peers in “Washingtonian” magazine in 2019, 2020 and 2021. Dr. Arpi has always loved being around kids and takes great pride in being able to care for your children in her practice. Having two young sons herself, she will always treat your children with the experience of a pediatric dentist but the heart of a mom. She is excited to meet all of the families at APD!

Dr. Arpi is a member of the American Academy of Pediatric Dentistry, the Virginia Dental Association and the Northern Virginia Dental Society.

Dr. Erin Mahoney is a board-certified orthodontist at Arlington Dental Studio. She realized the impact orthodontics can have on someone’s life through her own experience with braces; her new smile boosted her self-confidence and allowed her to be more outgoing. It was from this young age of 10 that she was inspired to become an orthodontist so she could have that same effect on others.

Dr. Mahoney was raised in Maryland and started her dental experience as an orthodontic assistant at the age of 17. She attended the University of Maryland, College Park for her undergraduate degree. She then went to the University of Maryland School of Dentistry for dental school, graduating magna cum laude. Dental school is also where she met her classmate, roommate and dear friend, Dr. Arpi Khare. Dr. Mahoney completed a three-year orthodontic residency at Einstein Medical Center in Philadelphia and has been practicing in the Baltimore area since 2016. She is skilled in early intervention (Phase I) orthodontic treatment, functional growth appliances, traditional braces, Invisalign® and orthognathic jaw surgery.

Dr. Mahoney is a board-certified orthodontist — a voluntary credential that represents an orthodontist’s personal and public commitment to the standards of specialty practice and lifelong learning. In addition to her formal education, Dr. Mahoney attends many continuing education seminars year-round. She focuses her attention on courses that offer training in the latest orthodontic technology to decrease treatment time and increase esthetics.

Dr. Mahoney is eager to bring out the beauty in her patients’ smiles while providing personalized care and individually tailored treatment plans. In her spare time, she loves to travel to new cities, both near and far, to absorb their culture and, of course, cuisine. She also enjoys interior decoration, yoga and walks with her rescue puppy, Otto.

Dr. Mahoney is an active member of the American Association of Orthodontists®, the Middle Atlantic Society of Orthodontists and the American Dental Association®.

Dr. Diana Joo is a highly trained prosthodontist specializing in complex functional and esthetic dental rehabilitation. Born in South Korea and raised in Loudoun County, Virginia, she attended Virginia Commonwealth University and George Mason University for her undergraduate studies, where she worked as both a dental technician and a middle school assistant teacher. She then earned her Doctor of Dental Surgery degree from Touro College of Dental Medicine in New York.

Dr. Joo’s passion for comprehensive dental rehabilitation, aesthetic improvements and minimally invasive dentistry led her to pursue an additional three years of advanced specialty training in Prosthodontics at University of Pennsylvania in Philadelphia, where she also completed a Master of Oral Biology focusing on complications and technical protocols of the advanced Jaw-in-a-Day procedure. During her residency, she presented her clinical cases and research at numerous national and international conferences, with a particular focus on full-mouth rehabilitation and the care of oral cancer patients.

Today, Dr. Joo continues to advance prosthodontic research and education as a part-time adjunct assistant professor at the University of Pennsylvania School of Dental Medicine. She lives in Fairfax County, Virginia, with her husband and young son and is dedicated to providing her patients with compassionate, cutting-edge care. During her spare time, Dr. Joo enjoys cooking different recipes and trying different cuisines.

Dr. Joo is a member of the American College of Prosthodontists, the American Academy of Maxillofacial Prosthodontics, the International Association for Dental, Oral, and Craniofacial Research and the International Team for Implantology.

Dr. Hee-Chul Chung is a dedicated dental care professional with over 10 years of experience in general dentistry. Dr. Chung exhibited special talent in his handwork from early childhood, assembling plastic airplanes because he enjoyed working with his hands. Dr. Chung is passionate for his dental work, combining his hand skills with art to create beautiful smiles. Dr. Chung obtained his Doctor of Dental Surgery degree in 2011 at the University of Iowa College of Dentistry and worked in Iowa for two years before relocating to Virginia after falling in love with this community.

In Virginia, he is committed to keeping the patients’ best interest in his heart and staying in touch with the latest technology. He has attended numerous continuing education courses, including from the renowned Dawson Academy and Phelan Dental Seminars.

When Dr. Chung is not working, he enjoys hiking, working out, reading books and watching Netflix.