About Our Doctor

H. Sami Osseiran, D.D.S., M.S., M.A.G.D.


A graduate of Georgetown University School of Dentistry with certification in occlusion, TMJ management and prosthodontics, Dr. Osseiran received a Master of Science degree from the same institution for his invention of an intraoral prosthesis treatment for obstructive sleep apnea and snoring. Dr. Osseiran also attended NYU for a fellowship in surgical and prosthetic implant dentistry and was awarded a prestigious Mastership from the American Academy of General Dentistry (MAGD). With more than 5,000 hours of continuing education covering all dental disciplines, Dr. Osseiran also received the honor of being recognized as one of America’s Top Dentists in cosmetic and implant dentistry for the 2005-2006 year from the Consumer Research Council of America.

Dr. Osseiran is a member of numerous associations and academies, including:

  • Mastership of the American Academy of General Dentistry
  • American Academy of Osseointegration
  • European Academy of Osseointegration
  • American Dental Association
  • DC Dental Society
  • American College of Prosthodontists
  • American Academy of Functional Orthodontics
  • International Association of Osseointegration
  • American Academy of Cosmetic Dentistry
  • International Edition of Who’s Who
  • Executives and Professionals Who’s Who

Dr. Osseiran approaches patient needs from a variety of angles, ensuring each patient receives the newest and best treatment for his/her specific situation. His dedication and passion in adopting the latest scientific and technological approaches in modern dentistry is matched only by his extensive education and experience.

 Dr. Osseiran is a top dentist in Tysons Corner, VA and Potomac, MD.  He is available for comfortable and convenient appointments in each office.

Dr. Jhosdyn Barragan

BarraganDr. Jhosdyn Barragan was born in Caracas, Venezuela before moving to the U.S where he would eventually settle in Richmond, Va. He earned his undergraduate degree in Biology with a distinction in Chemistry from James Madison University's Honors College and received his DDS degree from the world’s first dental school, the University of Maryland School of Dentistry. During his time there, he trained in various aspects of dentistry; including, but not limited to: restorative, prosthodontic, endodontic, pediatric, and digital dentistry. Dr. Barragan served as an Oral Surgery Clerk during his final year of education, training under the guidance of Oral Maxillofacial surgeons in an urgent care clinical environment.

Outside the classroom, Dr. Barragan was involved in the Hispanic Dental Association, Academy of General Dentistry, and participated in various volunteer and mission projects including the Honduras Project, a mission trip aimed at providing dental care to some of the most under-served populations in Central America. Dr. Barragan has also volunteered in numerous Mission of Mercy projects, tasked with providing quality acute dental treatment to communities with limited access to dental care. Through his service experiences, Dr. Barragan has gained a passion and appreciation for treating all types of patients and providing quality care on a personalized level.

An avid lover of learning, Dr. Barragan participated in several continuing education courses while still enrolled at the University of Maryland. He has completed courses ranging from cosmetic dentistry to periodontal surgery and continues to further his education in the latest advancements in dentistry. Dr. Barragan is thrilled to join the Advanced Dental Center team and looks forward to treating new and existing patients in the Tysons Corner area and surrounding communities. During his free time, Dr. Barragan enjoys competing in local recreation leagues, spending time with family, cooking, and traveling.