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Dr. Portenoy, Dr. Garver and team welcome you to our practice! We supply dentistry services to patients on Long Island, in Manhattan and throughout the New York metropolitan area. Our specialties include thorough comprehensive evaluations, cosmetic procedures, full mouth rehabilitation and dental implants.
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Reviews (10)
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Debra Hamilton
Apr 26, 2021
Always a good experience. I've cut back visits to medical facilities during the pandemic and gradually am resuming regular prevention visits. I felt very safe as they observe health protocols. The staff is friendly and caring as always. Unlike many people, I don't dread the dentist. They are good, knowledgeable, and professional people.
Rebecca Bauer
Apr 03, 2021
This is a great dental practice. Dr. Portenoy and the entire staff of Signature Dentistry of Rockville Centre are friendly and professional. The exam provided is very thorough. Everything is clearly communicated throughout the visit. The office is clean, modern and efficient.
Euripaul Euripaul
Mar 02, 2021
Dr. Garver and staff always exceed above the gold standard of care. From the minute you walk in the door the level of professionalism is very apparent, your comfort, safety and care is of utmost importance. Especially in the current climate that we are in, I felt very comfortable having my dental work done. Everyone should have a dental office like Signature Dentistry in their life. Thank You!
Joey Goodman
Feb 06, 2021
Dr. Portenoy, Dr. Garver and everyone else at this office is incredibly caring and simply amazing at what they do. If you're anxious or nervous about going to the dentist, like myself, this is the place for you. They will do everything in their power to make you feel comfortable and at ease. They will hold your hand through the entire process and explain every little detail, if you want.

They truly go above and beyond, and to boot, their work is spectacular. Everything is state of the art, and again, their work is truly top notch. I can't say enough great things about this office. If you're on the fence, don't hesitate, just make the appointment and go - and from beginning to end, the staff to the dentists, who I've worked with both, will help you out. Thank you Dr. Portenoy (and EVERYONE else too, literally everyone) for working with me.
Jodi Lipkin
Jan 21, 2021
Dr. Portenoy, Dr. Garvey and their team are always warm and friendly as well as being very professional. I feel very safe in their office in these uncertain and scary times. My family has been using them for years and the treatment we have received is perfection!
Paul Montiel
Mar 22, 2019
This is the first time that I can say it was pleasure to go to the dentist. I had never been to this office before, I was recommended by a friend. From the the minute I walked in I was treated like I was a patient for 20 years. It was nice to have a 5:00 appointment and be seen on time. The entire staff was extremely warm and welcoming. Thanks for the fantastic cleaning Euridiss. Dr. Portenoy made me feel very comfortable, he didn't seem like one of those dentist who is looking to do work on you just make money. I highly recommend Signature Dentistry of Rvc. Thanks for everything
Joan Hughes
Jan 12, 2019
The entire experience was wonderful. The staff is extremely friendly and professional. They put you at ease. Dr. Portenoy is the best! He carefully explains everything that he is doing. He makes you comfortable. He is a perfectionist! I trust his professional knowledge and expertise. I highly recommend him. I have referred friends to him and all have been happy with his services.
Regina Oleary
May 26, 2018
Dr. Portenoy is caring, patient, and one of the most highly skilled dentists in the New York area. I feel very fortunate that he was referred to me at a time that I was very anxious and fearful about all the work I knew needed to be done. He made the process calming, painless, and the best part - I am enjoying the benefits of his expertise many years later. And his staff is professional and pleasant.
Ewelina I.
May 05, 2018
I can not imagine seeing anyone else but Dr. Portenoy and Dr. Garver. Entire office is very attentive and pleasant. They make you feel comfortable and relaxed and make sure that all your questions are answered. They are all top of the line professionals with state of the art equipment. The office is newly renovated and it looks stunning! Best office ever, love them!
Heather Barnes
May 05, 2017
Dr. Portenoy and his entire team are top notch professionals! They think about and care for your teeth in a way that make you believe your mouth is the most important part of your body. I am completely assured that I don't have to worry about my dental health as long as I am in the care of Dr. Portenoy.