Dr. Greenfield has been a practicing Endodontist since 1991. She was originally trained in Lima, Peru, and earned her DDS degree at the Federico Villarreal School of Dentistry. She was also Member of the Board at the Peruvian Association of Endodontists. From 1991-1999 she continued her association as a Faculty Member in Endodontics while establishing and endodontic practice in Lima.

She was encouraged by Dr. Samuel Seltzer, one of the founding fathers of endodontics, to receive further training in the USA. She completed a DMD in 2003 and a Specialty in Endodontics in 2007 at Temple University School of Dentistry in Philadelphia. She is a superb clinician, achieving a perfect score on the clinical portion of her general dental licensing exam(NERB). While enrolled in both programs, Dr. Greenfield was a Clinical Instructor of Endodontics at Temple University School  of Dentistry  from 2000-2008.

Dr. Greenfield is an Active Member of the AAE (American Association of Endodontists) , the ADA (American Dental Association) and the PDA (Pennsylvania Dental Association) and Member of the Board of the Montgomery Bucks Dental Society and The Dental Clinic Club of Philadelphia. She upgrades her skills through Continuing Education Courses at the AAE , University of Pennsylvania and other well renowned Institutions. Dr. Ada Greenfield is the founder of Lower Gwynedd Endodontists, PC. She created her own office since 2008. She has been working at this location for many years. 

She is married to Dr. Leonard Greenfield and has a daughter, Hannah .

Dr. Nasim Levin, DDS, DMD, was born and raised in Tehran, Iran, and
earned her Doctor of Dental Surgery Degree (DDS) from the Tehran
Azad Dental School. In 2020, Dr. Levin earned her Doctor of Dental
Medicine Degree (DMD) from The University of Pennsylvania with an
honors distinction in community oral health. Dr. Levin received the
Drs. Samuel and Louis Rossman Endodontic Scholarship Award and
PASS International Dentist Award. Dr. Levin was also inducted as a
member of the Omicron Kappa Upsilon (OKU) Honor Society. The
members of OKU, elected from top 20 percent of the class.
After receiving her DMD, Dr. Levin went on to graduate from the
University of Pennsylvania School of Dental Medicine’s Endodontics
Program, where she completed advanced training in microsurgery.
During this time, Dr. Levin provided instruction on advanced
microsurgery techniques to Endodontists from around the world. Dr.
Levin also earned recognition for her poster presentation related to
endodontic microsurgery at the 2022 American Association of
Endodontists (AAE) Annual Meeting.
Dr. Levin is a part-time faculty member at the Graduate Endodontic
Department of The University of Pennsylvania. Dr. Levin is an active
professional member of the American Association of Endodontics
(AAE) and the American Dental Association (ADA).
On her free time Dr. Levin enjoys hiking, reading, cooking, and
spending time with her family.