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LynAnn Mastaj, DMD



  • Specialty Certificate in Orthodontics, Albert Einstein Medical Center, Philadelphia, PA (’92)
  • General Practice Residency, York Hospital, York, Pennsylvania (’89)
  • Doctor of Dental Medicine, University of Pennsylvania School of Dental Medicine (’88)
  • Bachelor of Arts in Chemistry, Wheaton College, Norton Massachusetts (’84)

Professional Memberships

  • American Dental Association
  • American Association of Orthodontics
  • Academy of Sports Dentistry
  • Academy of Stomatology
  • Main Line Dental Society

Professional Awards

  • Invisalign Premier Provider 2006
  • International College of Dentistry Award 1988
  • Federation of Special Care Organization 1988

About Me

Dr. LynAnn Mastaj has been a private practice orthodontist for more than 20 years specializing in braces and Invisalign for children and adults of all ages. Dr. Mastaj graduated from the University of Pennsylvania and received her specialty training in orthodontics at Albert Einstein Medical Center.

After receiving her DMD from Penn, Dr. Mastaj did a General Practice Residency at York Hospital becoming trained in all aspects of dentistry but her love of art and science inspired her to specialize in orthodontics. While receiving her specialty training at Albert Einstein Medical Center, she became a published author in the orthodontic literature.  In 2005, Dr. Mastaj became an Invisalign Premier Provider and co-authored a book with colleague Dr. Donna Galante, “Healthy and Beautiful at any Age: Your Smile and Modern Orthodontics”. Dr. Mastaj joined the Penn Dental Faculty practice in 2013 bringing her knowledge, experience and expertise in orthodontics and Invisalign to the practice.

Dr.  Mastaj lives in Bryn Mawr, Pennsylvania with her husband, Dr. Ernesto Lee, her two children and dog, Ace. For the past several years she has been an active member of the ECHOES Foundation and has traveled around the world educating children and communities about the benefits of proper oral hygiene. Dr. Mastaj is an avid alpinist having climbed Mt. Kilimanjaro, Mt. Fuji, Mt. Kosciuszko and countless highpoints in the United States. She also enjoys tennis, skiing, cooking and entertaining in her free time.