ABOUT Castanaro Dental 

John Castanaro, DDS, is a general and cosmetic dentist serving patients at Castanaro Dental in Yonkers, New York, Dr. Castanaro followed in the footsteps of his father and joined the practice in 2009, carrying on the family tradition.

Dr. Castanaro earned his bachelor’s degrees in biology and philosophy from the University of Scranton in Pennsylvania. He then received a master’s in biology from the University at Buffalo in New York, before graduating cum laude from the University at Buffalo School of Dental Medicine. Afterward, he completed a residency at Montefiore Medical Center in New York City, where he served as chief resident and became skilled in cosmetic and implant dentistry.

He stays up-to-date with the latest advancements in dentistry and continues to partake in advanced technical seminars to further his education. Dr. Castanaro believes in providing patients with the best technology and care to improve their oral health.

Dr. Castanaro is currently a clinical professor at Mount Sinai Hospital. He is also a Trustee of the Yonkers Board of Education and a member of Mayor Spano’s Health Advisory Board. He was awarded the Top Doctor Award from 2017-2019, Top Dentist New York State in 2018, and Andus Gala Honoree in 2019.

Outside of the practice, Dr. Castanaro has participated in mission trips to Mexico, where he performed dental exams, restorations, and extractions for orphans. He has also given lectures on techniques for treating acute dental trauma to military support personnel in Kuwait and Qatar.


Top Doctor '16, '17, '18, '19

Trustee For The Board Of Education In Yonkers 2019

Andrus Gala Nominee For Charity Work

Mayor's Health Advisory Committee Since 2018

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How Long Do Teeth Whitening Effects Last?

The bleaching that results from any teeth whitening process – whether in-chair whitening or at-home whitening – will last several years. Some rebound of your original tooth color can be expected from both methods.


Words from our patients

  • Google

    "Would highly recommend him and the practice to anyone! Kind, courteous, and knowledgeable!"

    Mandy M.
  • Google

    "I am so happy I went to Castanaro Dental and highly recommend to anybody who is looking for a high-quality dentist."

    Melissa M.
  • "Not only was the office clean and clearly sanitized but they had me in and out of there in under an hour with an impeccable crown. Needless to say 10/10"

    Robert C.
  • Google

    "He is extremely knowledgeable and uses the newest tools which makes it painless and comfortable."

    Ryan A.
  • Google

    "We LOVE Castanaro dental! Dr. John saved the day for me many years ago and now our whole family goes."

    Nicole A.
  • Google

    "Dr. John Castanaro is a very smart, enthusiastic, empathetic, caring and down to earth dentist."

    Lori A.
  • Google

    "Dr Castanaros office was friendly and professional. The Dr himself is amazing. I needed a crown and he matched it to my other teeth, no one can tell the difference."

    Eneida S.
  • Google

    "Best dentist ever! Cleanings and whitenings all pain free. Office staff is all super friendly and knowledgeable making the experience very comfortable."

    Nicole N.
  • Google

    "Dr. John is a great dentist! Clean and friendly office staff. The kids love going to see him and ask when their next appointment is. Great work and never painful."

    Katrina P.
  • Google

    "Thank God I found Dr Castanaro! He got me right in, put on a crown and literally saved my vacation."

    Christine S.


Now Offering Sunday Office Hours

Castanaro Dental
970 N Broadway, Suite 304
Yonkers, NY 10701
Phone: 914-964-9500
Fax: 914-964-9635
Office Hours

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