Your Journey to a Confident Smile Starts Here

At Lindenhurst Orthodontics, we’re here to help you achieve the bright, confident smile you’ve always wanted through personalized & high-quality orthodontic care. Dr. Mathew A. Nissenbaum provides expert treatment in braces, Invisalign, surgical orthodontics, and dentofacial orthodontics.

Your smile matters to us as much as it does to you. Our team is dedicated to creating beautiful, lasting results for patients of every age, all in a space where you’ll always feel comfortable, supported, and genuinely welcome.

Patient-Centered Care

We treat every patient like family, providing orthodontic care rooted in genuine care & connection to help you get the most out of your treatment experience.

Treatment Designed for You

We customize every treatment plan to fit your unique needs, ensuring your care feels truly individualized. With our team, you’ll feel like the only patient in the room.

Commitment to Quality

Our team continually advances their skills through ongoing education and stays on the cutting edge of orthodontic treatments to provide you with the highest level of care.

Award-Winning Orthodontics

Lindenhurst Orthodontics is honored to be recognized as a top orthodontic practice. We were named The Best of Long Island Orthodontist in 2017 and have been proud nominees every year since.

We are deeply grateful to our amazing patients for your ongoing support. Your trust makes our success possible!

Meet The Doctor

Dr. Matthew Nissenbaum, DDS

Dr. Matthew Nissenbaum has been practicing orthodontics on Long Island for over 20 years, with more than 15 years at Lindenhurst Orthodontics. A passionate orthodontist, he takes great pride in every patient and the thousands of smiles he has helped create. His focus is always on achieving the best possible results while providing a positive, comfortable orthodontic experience.

A Long Island native, Dr. Nissenbaum graduated from Bellmore Kennedy High School in 1989 before earning a Bachelor of Science in Biology from the University of Maryland. He then received his DDS from SUNY Stony Brook School of Dental Medicine, where he earned numerous academic honors, including the Xi Psi Phi Fraternity award for the highest cumulative academic average over four years of dental school. Following dental school, he completed a three-year orthodontic residency at SUNY Stony Brook, earning his specialty certificate in orthodontics.

Outside the office, Dr. Nissenbaum enjoys spending time with his wife, two daughters, and their dog, Chilly. A devoted Yankees fan and music lover, he enjoys The Rolling Stones, as well as playing Scrabble, word games, and tackling jigsaw puzzles—many of which are proudly displayed on the walls at Lindenhurst Orthodontics!

What Our Patients Say

What We Offer

Orthodontics Focused on Affordability

We understand that the cost of braces is an important consideration for every family. At Lindenhurst Orthodontics, we never want finances to prevent a patient from receiving the care they need.

The cost of treatment varies depending on your individual plan, and our team will walk you through all options so you can choose the best fit for your smile. We’ll help create a payment plan that works within your budget and make sure you know exactly what to expect before treatment begins.

If you have orthodontic insurance, chances are we accept it! Our office is proud to work with most major insurance providers, and we also accept most major credit cards. Our staff is here to assist with insurance claims and paperwork to make the process as smooth as possible.

Please reach out with any questions about coverage or ideas for how we can make your orthodontic experience as easy and enjoyable as possible.

Serving Lindenhurst & Surrounding Areas

We proudly serve patients from Lindenhurst, Amityville, Copiague, Farmingdale, Massapequa, Babylon, West Babylon, West Islip, Melville, Dix Hills, and Plainview as well as from all across Long Island.