James De Leonardis, DDS
Dental
175 Atlantic Ave.
Oceanside,
NY
11572
(516) 536-7008
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
Services
- Adult Invisalign
- Bridges
- Caries Test
- Composite Fillings
- Cosmetic - Invisalign
- Cosmetic - Veneers
- Cosmetic Dentistry
- Crown Lengthening
- Crowns
- Dentures
- Digital Radiography
- Digital X-Rays
- Endodontic - Root Canals
- Endodontics
- General Dentistry
- Geriatric Dentistry
- Implant Dentistry
- Implant Supported Dentures
- Nitrous Oxide
- Oral Cancer Screening
- Oral Surgery
- Pediatric Dentistry
- Periodontal - Deep Cleaning
- Periodontal - Scaling and Root Planing
- Periodontal Therapy
- Periodontics
- Prosthodontics
- Restoration of Implants
- Safe Removal of Mercury Fillings
- TMJ - Temporomandibular Joint Disorder
- Teen Invisalign
- Teeth Extraction
- Wisdom Teeth Extraction
- Youth Dentistry
Languages
- English
Insurance
- Most insurance accepted
Payments
- American Express
- Care Credit
- Cash
- Check
- Debit
- Discover
- FSA
- Financing
- HSA
- Mastercard
- Visa
Certifications & Memberships

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5 stars Bill J 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 Anonymous Verified customer
Always a great experience.
5 stars Angelena G Customer since 2020
Always good and great staff.
5 stars Eric P 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 Patricia M Customer since 1999
The best dentist ever. He treats us like family. He and his staff have a gentle approach.
5 stars Julia H 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 Joseph M 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 Mark S Customer since 2019
Job well done
5 stars Laura K Customer since 2007
Dr D is a wonderful dentist! and his staff is great!
5 stars Iraida P Customer since 2021
Very friendly atmosphere.I had a complete check up and cleaning without any discomfort or pain.
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