Northern Jersey ENT / Sovereign Medical Group

85 Harristown Rd Ste 105 Glen Rock, NJ 07452

It is outside of normal business hours for this location. Please fill out the appointment request form for a call back.

A message from Northern Jersey ENT / Sovereign Medical Group about COVID-19:

Our office is currently open Monday through Thursday in our Glen Rock office. Patients should call when they arrive, and we will tell them when they are ready to be received in the office. We have your safety and ours in mind as we wear masks and we require you to wear a mask covering your nose and mouth. We are disinfecting all common areas.


Photo of Harry Katz, MD from Northern Jersey ENT / Sovereign Medical Group

Harry Katz,

Dr. Harry Katz, MD, is a board-certified otolaryngologist - a physician who specializes in disorders of the ear, nose, and throat.

He earned his bachelor’s degree, cum laude, from the Columbia University School of Engineering and Applied Sciences, and earned his medical degree from New York University School of Medicine. After post-graduate training in surgery at Long Island Jewish Hillside Medical Center, he completed his residency in otolaryngology at New York University Bellevue-Manhattan VA Medical Center.

A Fellow of the American College of Surgeons, Dr. Katz also is a member of the American Academy of Otolaryngology – Head and Neck Surgery and the American Rhinologic Society.

Photo of Nicole Groat, AuD, CCC-A, FAAA from Northern Jersey ENT / Sovereign Medical Group

Nicole Groat,


Dr. Nicole Groat is a licensed Audiologist and Hearing Aid Dispenser in the state of New Jersey. She joined our team of professionals in July of 2021.

Dr. Groat earned a Bachelor of Science degree in Communication Sciences and Disorders from Penn State University and a Doctor of Audiology degree from A.T. Still University. She holds a certificate of Clinical Competence in Audiology from the American Speech Language Hearing Association and is a Fellow of the American Academy of Audiology.

Dr. Groat gained experience working in a variety of clinical settings routinely performing a full range of diagnostic services. Her knowledge in the latest technology offers patient’s options based on their needs, lifestyle and budget.


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Healthy Hearing posts all positive and negative reviews that meet publishing criteria.

Read 122 verified patient reviews for Northern Jersey ENT / Sovereign Medical Group! Their average review score is 4.95 () from 122 reviews.

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“My ENT is Dr. Harry Katz. Dr. Valerie Kriney is an audiologist in his practice who tested my hearing a couple of years ago. The practice is not pushy about getting hearing aids. Recently I decided it was time (tired of dealing with low talkers, movies with poor sound, etc.). The first hurdle I had to get over was sticker shock with the price for these tiny things. The second hurdle was learning about HA attributes, options, and brands. Costco seemed at first like an obvious choice because of price. However, I never got to my appointment because they were so busy that there was a two month wait time. During this period I became educated and learned that, while they have a number of brands, Costco often doesn't carry the top models for a brand. Believe me, money is important, however my criteria, within reason, is: best sound, worthwhile features, and accessible, personalized service. My vetting consisted of Consumer Reports (marginally useful), Google (a bit better), and friends that had HA (the best). Because of all of the above I decided to spend my time and money with Dr. Kriney. She is very thorough in testing and explaining the intricacies of HA. At no time did I feel I was being pushed into a decision or rushed. Dr. Kriney is professional, friendly, and was able to give me confidence in making my choice. I've now been using my new HA for three weeks. They're comfortable to the point where I don't even notice them. I very much appreciate Dr. Kriney's help with my hearing.”

of Wyckoff, NJ   
12/09/2020    Review submitted online
5 out of 5 1.

“Dr. Valerie Kriney is professional, knowledgeable, and most pleasant to work with. She gave me all the time I needed, and more, as she fitted me with, and explained the intricacies of, my new hearing aids. Thank you, Dr. Kriney!”

of Ridgewood, NJ   
09/08/2020    Review submitted online
5 out of 5 1.

“Very helpful with hearing aids and proper fitting. ”

of Wyckoff, NJ   
03/27/2020    Review received via mail
5 out of 5 1.

“Dr. Valerie Kriney Au.D. is an excellent communicator and she takes time to go over every aspect of your hearing problem. She then explains in detail your new hearing aid. ”

of Saddle River, NJ   
03/23/2020    Review received via mail
5 out of 5 1.

“Very helpful, informative. ”

of Fair Lawn, NJ   
03/16/2020    Review received via mail
5 out of 5 1.

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Clinic details

Comprehensive ENT/Hearing Care in one location

Northern Jersey ENT Associates is one of the largest single-specialty New Jersey Ear, Nose, throat (ENT) group practices in Bergen County that offers a full range of hearing care services to patients of all ages. Our highly qualified clinical professionals provide complete testing, evaluations and offer the most advanced hearing devices that are available. We can help you make the best choices with all of your hearing needs and achieve a better quality of life through better hearing.


Hearing care services

We provide full comprehensive hearing services including:

• Hearing evaluation and testing

•Evaluation of dizziness and balance problems

•Tinnitus evaluation and testing

•Hearing aid evaluation and dispensing

•Hearing aid adjustment and servicing

•Custom ear protection

•Assistive listening devices

•Specialized auditory testing


Hours of operation

Monday9 am - 5 pm
Tuesday9 am - 5 pm
Wednesday9 am - 5 pm
Thursday9 am - 5 pm
Friday9 am - 1 pm

Clinic links

Accepted forms of payment

  • Visa
  • MasterCard
  • American Express
  • Discover
  • Cash
  • Check
  • Debit
  • Financing available for those who qualify
  • Insurance accepted, please call for details
Disclaimer: This clinic profile is for general information purposes only.