Welcome to

Glen Cove Orthodontics

At Glen Cove Orthodontics, the needs of our patients are the core of everything we do, and it’s been that way for over four decades. Our team loves to work with patients to guide them through their transformation journey. For us, the best reward is to see you smile with pride! We will work very hard to make sure that happens.

Why Glen Cove Orthodontics?

All Ages Welcome
At Glen Cove Orthodontics, we love to treat Children and Adults too. Hey Mom and Dad, while you are in the office, ask us what we can to straighten your smile too. We even offer invisible options too.Learn More »
Diamond Plus Invisalign Provider
As a Diamond Plus Invisalign Provider, we are in the highest tier that Invisalign recognizes due to our dedication and experience in treating patients. We have the knowledge and expertise to get you the predictable results you deserve!Learn More »
Brand New Technology
Staying updated on the latest technology allows us to offer you competitive prices, shorter wait times, fewer visits, and one-on -one attention from expert doctors. The result is a smile transformation that meets your expectations and dreams! Click here to learn more about our technology.Learn More »

Get to Know Your New Orthodontists

Maryann Vlahos D.M.D.


Board-Certified Orthodontist
St. Barnabas Hospital Orthodontics Residency
Northwell Health LIJ General Practice Residency
Harvard School of Dental Medicine
Columbia College, Columbia University


Every day, Dr. Vlahos uses her practice as a platform for making a positive impact in the community. She loves building relationships with her patients on their journey to a healthier and more confident smile. That means, the more you share with her, the happier she gets! Dr. Vlahos is clinically passionate about evidence-based treatment as a platform to providing you or your child with an amazing smile.


Dr. Vlahos is a new mom and is loving every minute of it. She is also an impressive cook; some say she is semi famous for her Pastitsio (Greek lasagna).

Brett Kastin D.D.S.


Over 20 years of clinical experience
Assistant Clinical Professor, Columbia University
Columbia Orthodontics Residency
Columbia School of Dental Medicine
Binghamton University


After 20 years in practice, Dr. Kastin still loves orthodontics! “When you work with patient’s month after month, you start to form a bond. The team and I start to look forward to seeing our patients as much as I like to think they look forward to their visits.” Helping change smiles while forming long lasting friendships with patients and families is what Dr. Kastin enjoys most about his profession. He also loves the art of orthodontics, as much as the science. He believes a smile is made up of a thousand little details and believes it is his job to make each one perfect


Not many people know this but Dr. Kastin, is not only an accomplished orthodontist, but also a famous athlete. In the twelfth grade, his lacrosse skills had him awarded the Newsday Scholar Athlete of the Week. No autographs please…

Ready to explore a life full of smiles?

Contact us today !


Matthew TurnerMatthew Turner
15:09 01 May 23
I am so glad I chose Glen Cove Orthodontics for my orthodontic treatment. The staff is friendly and the atmosphere is welcoming. I have never had to wait more than 5 minutes for an appointment, and that is pretty amazing for a busy office! They are also very thorough when explaining the treatment plan and explaining what's going on during each visit. Dr. Michael B. is great at making sure you know what's going on with your teeth, how they're moving, and how they will look once they are finished moving. I would definitely recommend this office to anyone looking to get braces or invisalign!
Most efficient office we’ve ever been too. Beyond professional! Everyone is always so nice and the brace process was great! 🙂
Laura Lazar-nordinLaura Lazar-nordin
16:22 26 Jan 23
WOW!! I brought my two kids here for their braces and the results were nothing short than great! Dr. Kastin was very approachable and reassuring. I will be telling family and friends that this the best orthodontic office in Glen Cove. Thank you again Dr. Kastin and all the wonderful assistants at Glen Cove Orthodontics!!
Michelle ElizabethMichelle Elizabeth
21:24 18 Jan 23
My daughter absolutely loves Dr. Kastin. She looks forward to all her appointments. The whole staff is super friendly and welcoming and we’re always leaving with smiles! Thank you to the whole team there.
Gggvvv VbbvvvGggvvv Vbbvvv
18:14 29 Apr 22
the staff is very friendly and helpful. it was an easy and calming process checking in. and have great entertainment while the short wait. the doctor made me feel safe and was a enjoyable process

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