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Justina Deitz, DO is a member of Summit Health's Endocrinology department. Dr. Deitz is an accomplished researcher in her field. She has also been named an NJ Top Doctor, and ranked as Leading Physician of the World for Bergen County in 2013.


Explains conditions and treatments
Takes time to answer my questions
Provides follow-up as needed
Office cleanliness

Based on patient feedback. Read the reviews


Dr. Deitz's Rating
Patient Perspective
4.0 Explains conditions and treatments
4.0 Takes time to answer my questions
4.0 Provides follow-up as needed
Office Rating
Showing ratings for:
19-21 Fair Lawn Avenue, Fair Lawn, NJ, 07410
n/a Average office wait time
4.0Office cleanliness
4.0 Courteous staff
3.0 Scheduling flexibility
19-21 Fair Lawn Avenue
Fair Lawn, NJ, 07410
"Didn’t feel dr cared and I felt like a number in her day."
  • April 14, 2022
"dr. deitz is the best doctor and proof of that is I have been her patient for many many years with no problem. She takes time talking to me, answer my questions, explains very well what I need to do to stay healthy. She is just sooo caring and I am very happy she is my doctor. Very smart indeed."
  • July 27, 2021


19-21 Fair Lawn Avenue
Fair Lawn,NJ,07410
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm


  • Endocrinology & Metabolism


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