175 Atlantic Ave.
Oceanside, NY 11572

Mon: 8:00AM - 7:00PM

Tue: Closed

Wed: 8:00AM - 7:00PM

Thu: 2:00PM - 7:00PM

Fri: 9:00AM - 1:00PM

Sat: 8:00AM - 1:00PM

Sun: Closed

100.0% would refer friends and family to us

5 stars Customer since 2020

Dr DeLeonardis came in on his day off at 7:30 at night to take care of a tooth I needed pulled. What Dentist does this? A Dentist who cares ! Thanks again Doc. 5 stars in my book !!

5 stars Verified customer

Always a great experience.

5 stars Customer since 2020

Always good and great staff.

5 stars Customer since 2020

I and my wife particularly appreciate James De Leonardis friendly nature and how he gives understandable dental care advice and corrective actions that could prevents more serious dental issues in future. We also appreciate the friendliness and competence of his staff. We strongly recommend De Leonardis for the resolution of your dental needs.

5 stars Customer since 1999

The best dentist ever. He treats us like family. He and his staff have a gentle approach.

5 stars Customer since 2008

The office is professional, friendly and accommodating. Dr. Leonardis has extensive knowledge and experience. He saved two of my teeth that should have been removed but with his care & direction both were saved. He has up to date equipment and experienced hygienists. If you are looking for a dentist, give them a try.

5 stars Customer since 2009

I actually enjoy going to Dr. De Leonardis' Facility. He and his staff are truly concerned for my needs and comfort. I would recommend everyone I know to use Dr. De Leonardis. I feel like I am visiting my extended family. A+++

5 stars Customer since 2019

Job well done

5 stars Customer since 2007

Dr D is a wonderful dentist! and his staff is great!

5 stars Customer since 2021

Very friendly atmosphere.I had a complete check up and cleaning without any discomfort or pain.

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