About the Doctor

Dr. Leonoff is a native of Long Island.  He was raised in Roslyn.

He graduated from Muhlenberg College in 1990 with a Bachelor of Science, majoring in Biology.

From 1990 to 1994, Dr. Leonoff attended SUNY@ Stony Brook School of Dental Medicine where he received his DDS degree.  He received numerous awards including the Crest Award for Excellence in Preventive Dentistry for the Elderly and the American Academy of Periodontology Student Award for Excellence in Periodontics.

Upon graduation from dental school, he stayed at Stony Brook to get his periodontal training in the Advanced Education in Periodontics Program.  The three year program ended in 1997 and he began his private practice specializing in periodontics.

During his residency in periodontics, Dr. Leonoff also participated in helping the investigation of the crash of TWA Flight 800 in 1996.  For his efforts, he received certificates of  thanks from then County Executive, Robert Gaffney, and from the School of Dental Medicine at Stony Brook.

In 2010, Dr. Leonoff was trained and licensed to perform LANAP (Laser Assisted New Attachment Procedure)  for the treatment of periodontitis.  LANAP is a revolutionary laser surgical procedure designed to treat gum disease is a more comfortable, less invasive way.  Dr. Leonoff was the second periodontist on Long Island trained and licensed to perform LANAP.

Currently Dr. Leonoff is a member of various institutions including the American Dental Association, the American Academy of Periodontology, the Dental Society of the State of New York, the Suffolk County Dental Society and the New York State PBA Police Surgeons Group.

Dr. Leonoff is married and has two children.  He is a very active car enthusiast and is currently President of the Metro NY Region of the Porsche Club of America.

Why Choose Us?

  • One of LI's Top LANAP Specialists
  • 15 Years Experience
  • Most Insurances Accepted
  • Gum Tissue Graft Professionals
  • Affordable Payment Plans
  • in-Room Entertainment
  • Same Day Appointments Available
  • State-of-the-Art Amenities
  • Cutting-Edge Technology
  • Personalized, Gentle Care
  • Comfortable, Relaxing Environment
  • Weekend Appointments
  • Licensed, Trained LANAP Specialist
  • HD TV's with Cable for Procedures

Associations & Memberships

  • American Dental Association (ADA)
  • American Academy of Implant Dentistry
  • Suffolk County Dental Society
  • IALP-Institute for Advanced Laser Dentistry

Business Hours

MondayBy Appointment
Tuesday9:00 AM to 5:00 PM
WednesdayBy Appointment
ThursdayBy Appointment
Friday9:00 AM to 5:00 PM
SaturdayBy Appointment
SundayBy Appointment