Dr Nista & Staff

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Nista Orthodontics

Dr. Girard T. Nista, DDS

Born and raised in Western Pennsylvania, Dr. Nista started his higher education at St. Vincent College in Latrobe, PA. He graduated with a Bachelor's Degree in Chemistry and went on to Temple University School of Dentistry to earn a Doctorate in Dental Surgery. Continuing his studies at Temple, he joined the Department of Oral Pediatrics in their Certificate/Masters of Science program. His Orthodontic Certificate was awarded by Albert Einstein Medical Center in Philadelphia following completion of their three-year orthodontic residency program.

Dr. Nista is a member in good standing with the American Association of Orthodontists, American Dental Association and New Hampshire State Dental Society. Nearly all of his professional career has been spent practicing orthodontics in Stratham, NH.

Dr. Nista and his wife, Carol, are long time residents of Stratham. Their three married daughters, Julie, Marybeth and Katie, also live in Stratham with their families.


Lynn has been a member of our staff for over 19 years. She is a an orthodontic assistant with experience in both orthodontics and general dentistry. Lynn's career in dentistry has spanned more than 30 years.



Having met while in school, Carol and Dr. Nista have been married since 1977. She has been with the practice from the very beginning and now shares the office management responsibilities with Maria.