Meet The Doctors

Dentist Jeffrey Mermelstein, DMD

ONCE AGAIN named one of America’s Top Dentists 2018 and                                                NJ Top Dentist 2017/2018

 1Dr. Jeffrey Mermelstein has been serving Essex County residents since 1983.  He attended Brandeis University where he received a B.A. in biology.  He then matriculated at Fairleigh Dickinson University School of Dentistry and was awarded his Doctor of Dental Medicine in 1983.  He trained for an additional post-graduate year at the East Orange Veterans Administration Medical Center completing a General Practice Residency in Dentistry. 

Dr. Mermelstein is affiliated with the following organizations:

  • American Dental Association-member
  • New Jersey Dental Association-member
    • Past Chairperson-Communication Council  
    • Delegate-House of Delegates
    • Trustee, Board of Trustee 2001-2009
  • Essex County Dental Society-member
    • Vice President 2009 and 2010                                                                               
    • President 1997
    • Chairperson-Children’s Dental Health Month Committee
    • Member-Peer Review Council                      
  • American College of Dentists-fellow

  • Academy of General Dentistry-member

  • Pierre Fauchard Academy-fellow

Dr. Mermelstein is dedicated to continuing education in dentistry to improve and maintain his dental skills.  He regularly takes many times the state dental requirements.


Dr. Mermelstein has been on the Board of the Beth El Nursery School and the South Mountain YMCA.  He enjoys hiking, bicycling, music, art, Devils hockey, and spending time with his family.   Baily, his border terrier is a certified therapy dog and Dr. Mermelstein is a certified therapy dog handler. 

Jonathan Gellis, DDS, MS

Dr. Jonathan Gellis attended Penn. State University and received a B.A.  He then continued his education earning an M.S.  in Biomedical Sciences at Rutgers University.

Subsequently he attended the New York University College of Dentistry receiving his Doctor of Dental Surgery degree in 2017.  He trained for an additional post-graduate year at the East Orange Veterans Administration Medical Center completing a General Practice Residency in Dentistry.

Dr. Gellis is dedicated to understanding the needs and desires of each patient. He takes great pride in providing the best dentistry has to offer in creating a personalized smile for every patient. From simple restorative dentistry to advanced cosmetic cases, Dr. Gellis looks forward to improving your oral health for years to come!  He is committed to staying current with the latest technologies and advances in dentistry by attending continuing education courses.

When Dr. Gellis is not providing dental care, he enjoys playing ice hockey, going on hikes with his wife and dog, traveling and trying new restaurants.


Dr. Gellis is affiliated with the following organizations:

American Dental Association-member

New Jersey Dental Association-member