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.
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.
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.
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.
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!
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!
“Absolutely love this office! The staff is wonderful! Dr. Nissenbaum is the most honest and detailed orthodontist you can find! I had my braces on for 2 years and the results are simply amazing! Doc and his staff genuinely care about their patients.” — Emily B
“If you are looking for an over qualified Orthodontist look no further !!! From the awesome staff to the doctor himself it was a pleasure to have been his patient. Everyone is accommodating and patient and so nice.” — Sha T.
“My daughter’s teeth came out beautifully. Less time than we expected that she needed to wear her braces for. Clean office, friendly staff, and overall great experience.” — Kathy C.
“Always very easy to work with for scheduling and emergencies. The front office people are extremely efficient and friendly. Had two children needing braces and from start to finish the results were outstanding. I would highly recommend the doctor and his staff to anyone needing this treatment.” — Steve C.
“Love everything about the practice! Myself and the boys were treated here and were completely satisfied with everything from start to finish.” — Vanessa N.
“Both of my children have had a wonderful experience at this office. Everyone in that office is very professional. They make each visit enjoyable. Most importantly my children have great smiles. I highly recommend going there.” — Elias C.
“Best Orthodontist!!!!!!! Both my kids went here, and I couldn’t have been any happier.” — Nancy P.
Everyone in the office is amazing!! They are sweet and kind and a pleasure to deal with!!” — Barbara N.
“Had braces for 4 years and recently got them off in June!! Loved the doctors and staff they are very friendly! Loved how my teeth turned out! Very happy with the treatment I got from this place and I still do for my retainer checkups!” — Natalie C.
“We had a great experience with Lindenhurst Orthodontics! Dr. Matt is an awesome doctor who really cares about his patients. My daughter loved him. We never waited and were in and out quickly. They are the best!!!” — Melissa I.
“I’ve been coming here for a year and a half now for my orthodontic treatment. The whole staff is so friendly and answers my questions and makes me feel comfortable.” — Michele A.
“My family loves Lindenhurst Orthodontics and their entire staff. Dr. Nissenbaum is the best. My kids felt very comfortable with him and the staff was a pleasure to work with. We have sent many people to his office and every one has given him rave reviews.” — Scott C.
“Lindenhurst Orthodontics is a great place. Dr. Nissenbaum is a wonderful doctor. My son has been a patient of Dr. Nissenbaum for the past 5 yrs. They always take great care of their patients. When you have an emergency they fit you in right away.” — Lori M.
“I’ve been coming here for a year and a half now for my orthodontic treatment. The whole staff is so friendly and answers my questions and makes me feel comfortable.” — Lindsay
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.
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.