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Dr. Nathan Schoenly earned both a Bachelor of Science in Biology and a Bachelor of Arts in English Literature from Saint Michael’s College in Burlington, Vermont. He went on to receive his Doctor of Dental Surgery from the University at Buffalo School of Dental Medicine in Buffalo, NY, where he remained to complete advanced specialty training to earn a certificate in Endodontics.

Dr. Schoenly is a board-certified diplomate of the American Board of Endodontics. He is a fellow of the American College of Dentists, International College of Dentists, Pierre Fauchard Academy, and the Virginia Dental Association. Dr. Schoenly is an active member of the Northern Virginia Dental Society where he served as president from 2025-2026.

As a partner with Dominion Endodontics for over a decade, Dr. Schoenly has been instrumental in advancing the practice’s dedication to excellence, innovation, and integrity. He is widely recognized by his peers for his clinical excellence and commitment to delivering advanced endodontic care using the latest techniques and technology. Dedicated to ongoing professional growth, he actively pursues and teaches continuing education while remaining at the forefront of advancements in endodontics, allowing him to consistently deliver the highest standard of care.

Dr. David Palmieri earned his Bachelor of Science in Biology and Doctor of Dental Medicine degree from the University of Pittsburgh. He remained at the University of Pittsburgh to complete his specialty training in endodontics, earning both a Certificate in Endodontics and a Master of Science degree.

Dr. Palmieri is a Fellow of the Pierre Fauchard Academy. He is also an active member of the American Dental Association, Virginia Dental Association, Northern Virginia Dental Society, and Alexandria Dental Society, where he served as president.

As the founder of Dominion Endodontics, Dr. Palmieri has been providing exceptional endodontic care to patients across Northern Virginia for more than 25 years. Trusted by both patients and referring dentists, he is known for his expertise in dealing with complex cases. His reputation has been built on clinical excellence and an unwavering commitment to continuing education—earning the confidence of patients and colleagues alike.

In recognition of his dedication to the profession, Dr. Palmieri received the Dr. Gene Gadaire Award from the NOVA Institute for Advanced Dental Education (Seattle Study Club). The award honors dentists who demonstrate outstanding clinical excellence, a commitment to lifelong learning, and meaningful contributions to the local dental community.

Dr. James Ryee brings over 17 years of private practice experience to C&R Dental Care, providing expert general and cosmetic dentistry across all three locations—Centreville and Tysons, Virginia, and Columbia, Maryland. His comprehensive approach and gentle touch have earned the trust of patients seeking everything from routine care to advanced implant treatments.

Born in Korea and raised in Ohio and Maryland, Dr. Ryee graduated from the University of Maryland Dental School and completed a general practice residency at the University of Maryland Medical Center. He is a Fellow of the International Congress of Oral Implantologists and a proud member of the Academy of General Dentistry, demonstrating his commitment to staying current with the latest advancements in dental care.

With extensive experience in general dentistry, cosmetic procedures, and dental implants, Dr. Ryee is uniquely qualified to restore function and beauty to your smile with the most modern and proven techniques.

Outside of the office, Dr. Ryee enjoys spending time with his wife, Jasmine, and their two children, Zoe and Matthew. He also loves playing basketball, biking, and fishing whenever he can.

Dr. Ryee works at both the Vienna and Columbia locations!

Mahshid Majlessi Koopaeei, DMD, MSc, is a highly skilled oral health physician who takes a calming approach to patient care. As one of the leading providers at K Street Dental & Orthodontic Group in Washington, D.C., and Gaithersburg, Maryland, Dr. Majlessi takes the time to ensure each patient receives high-quality, comfortable treatment. 

Dr. Majlessi attended the University of Michigan in Ann Arbor, where she received her Master of Science and a certificate of specialty in endodontics. She received her Doctor of Dental Medicine from the University of Pennsylvania in Philadelphia, where she was part of the clinical honors program and recipient of the Pre-Doctoral Endodontic Program Outstanding Clinical Award. She’s also a diplomate of the American Board of Endodontics.

In addition to her work in patient care, Dr. Majlessi is published in the Journal of the American Dental Association. She is also a current member of the American Association of Endodontics. She is bilingual, speaking both English and Farsi.

When she’s free, Dr. Majlessi spends much of her time with friends and family. She also enjoys painting, sports, and participating in fitness events. 

Dr. Yasamin Mojarad is a Northern Virginia native who earned her Bachelor of Science in Global Community Health from George Mason University. She went on to receive her Doctor of Dental Surgery (D.D.S.) degree from Virginia Commonwealth University School of Dentistry in Richmond, Virginia.

Following dental school, Dr. Mojarad completed a General Practice Residency at the Malcom Randall Veterans Affairs Medical Center in Gainesville, Florida, where she developed advanced skills in comprehensive patient care. She then returned to Virginia Commonwealth University to pursue specialty training in Endodontics, earning both her Certificate in Endodontics and a Master of Science in Dentistry (M.S.D.).

Dr. Mojarad is known for her thoughtful, detail-oriented approach and her ability to create a calm, reassuring experience. She delivers precision-driven, evidence-based care with a focus on both clinical excellence and patient comfort.

Juheon Seung DDS, MS, brings a wealth of experience and training to Sterling Endodontics in Glen Burnie, Maryland. Having the opportunity to enhance his patients’ lives and wellbeing is deeply rewarding, and it’s part of what makes Dr. Seung so excited to come to work each day.He completed his dental degree at the University of Maryland School of Dentistry (UMB) in Baltimore, returning to earn his Master of Science and a Certificate in Endodontics. Dr. Seung also attained his certificate for General Practice Residency at the Washington DC Veterans Affairs Medical Center.   While completing his specialty training, Dr. Seung’s research in bioactive materials was published in the Journal of Endodontics. He is also the recipient of a competitive research grant awarded by the Foundation of the American Association of Endodontists (AAE).   Dr. Seung is certified by the American Board of Endodontics (ABE) and is a diplomate of the ABE, joining an distinguished group of endodontists who have demonstrated their dedication to professional growth and providing the highest quality of patient care. He also serves as a clinical professor in the Endodontics department at his alma mater.   Dr. Seung is currently a trustee on the board of the Foundation of the American Association of Endodontists. He holds membership in the American Dental Association (ADA), American Association of Endodontists, Maryland State Dental Association (MSDA), Maryland Korean Dental Association, and the Edward C. Penick Endodontic Study Club.   A passion for personalized care guides Dr. Seung in his practice. He believes that everyone deserves access to top-quality endodontic surgery as needed and that services should always be provided in a warm and personable manner.   Patient education is woven into every visit to help patients take control of their dental health and wellness. Dr. Seung understands the stress and discomfort that frequently leads patients to his practice, and he strives to be caring and compassionate from the initial consultation through treatment and follow-up care.Meeting with Dr. Seung to explore endodontic surgical solutions begins with a simple phone call or a few moments on the online scheduling page.  

Dr. Corey Rollor is from North Potomac, Maryland. He received his bachelor’s degree in
Bioengineering from University of Maryland, College Park. He then went to University of
Maryland School of Dentistry, where he received his Doctor of Dental Surgery degree.

After finishing dental school, he completed a general practice residency at Evanston Hospital in Illinois. During this time, Dr. Rollor refined his skills and gained further experience in treatment especially in managing medically compromised patients. He then returned to Baltimore to complete his training in endodontics at the University of Maryland School of Dentistry, where he earned a Masters degree in Dental Biomedical Sciences and a certificate in Endodontics. Dr.Rollor is a member of the American Dental Association (ADA), American Association of Endodontists (AAE), and Maryland State Dental Association (MSDA).

Dr. Rollor is excited to be staying in the Baltimore area near his family. He avid DC sports fan and enjoys going to football and basketball games. During his spare time he enjoys working out, going on hikes and spending time with his family and friends.