Physical Therapist in Rockville Centre, NY

Performance PT from athletes who get it

Trident Physical Therapy is a one-on-one, cash-based performance PT clinic in Rockville Centre, NY. Led by CSCS- and TPI-certified physical therapists who train and compete themselves, every program is built around your sport, your body, and the goals you're actually working toward.

A man in a grey shirt stretches the leg of a man lying face down on a massage table outdoors on a golf course, while another man stretches nearby.

We treat athletes like athletes

Most PT clinics get you back to "okay." That's not the goal here. Trident was built for active adults and athletes who are training for a race, staying on the course, or pushing their performance further, people who need more than a generic exercise handout. Every session is one-on-one, every program is customized, and your providers train and compete themselves. They know what it takes to get back and to stay there.

Our Values

Three points. One standard.

The name Trident stands for three things: Trust, Loyalty, and Respect. These aren't marketing words, they're how this clinic operates with every client, every session.

Trust

You'll always know your plan, your progress, and the reasoning behind it. No handoffs, no surprises.

Loyalty

Your providers are invested in your outcome not just the session you're in. They're in it for the long game.

Respect

Your time, your goals, and your effort are taken seriously here. Every program reflects that.

Our Team

Meet the team behind Trident PT

Every provider at Trident is a credentialed physical therapist with specialized training in performance, strength, and sport. You'll work one-on-one with your provider every session, no handoffs, no techs.

Dr. Matt Barle
Owner/Performance Physical Therapist

I’m Dr. Matt. I was born and raised in Massapequa, NY. Once a Chief, always a Chief! Sports have always been a major part of my life. I’m an athlete and will always be an athlete. I played college baseball at Adelphi University. I wasn’t always the most talented on the field, but you better believe I was always one of the hardest workers in the room.

After graduating from Adelphi, I started working as a PT aide and a strength & conditioning coach for an outpatient orthopedic company. I worked with every sport you can think of and with athletes ranging from the high school to professional levels.

I attended New York Institute of Technology where I received my Doctorate of Physical Therapy. While in school, I had several clinical affiliations at a variety of different outpatient orthopedic practices throughout New York. After graduation, I continued working for the same outpatient orthopedic company for a year or so, but it wasn’t long until I wanted to take things to the next level. I was sick of having multiple patients scheduled at once and not being able to provide the quality of care I knew I could give and my patients deserved. That’s where Trident Physical Therapy was born.

Nowadays, I continue to push the limits and make sure I maintain an athlete’s mindset. I’m a jack of all trades and believe in practicing what you preach. You’ll find me strength training in the gym at least 3–4 times a week. I do yoga, and I’ve fallen in love with running—especially when the weather cooperates.

In the past year, I’ve taken on the endurance world and completed my first full marathon—the iconic New York City Marathon. I’ve got my sights set on completing the other world major marathons now. The goal is and will continue to be to show up, compete, and crush expectations.

If you’re looking for someone to hold your hand, you came to the wrong place. If you want someone who’s going to push you to be the best version of yourself, then I’m your guy. You give me 100% effort, and I’ll give you 110% all day, every day. It’s time to flip the script on what you think physical therapy looks like. If you’re ready for an unmatched physical therapy experience, let’s get started.

Dr Spencer Sundeberg
Performance Physical Therapist

Hey I’m Dr. Spencer. I’m a physical therapist with a broad background in sports, strength, and conditioning. I’m a former collegiate lacrosse player with 6 years of NCAA experience. Over the years, I’ve gained experience in a variety of training approaches, allowing me to tailor my methods to best meet the needs of each individual. I’m passionate about working with clients of all levels, whether you're recovering from an injury or striving to reach new performance goals. My focus goes beyond just helping you return to a pain-free life—I’m dedicated to taking you to the next level, unlocking your full potential, and guiding you toward long-term success. I look forward to partnering with you on your rehabilitation journey towards improved performance.

Shenneika McIntyre

I’m Shenneika, the Client Care Coordinator at Trident Physical Therapy. With over 15 years of experience in customer support, care coordination, and client communication, I’ve built my career around helping people feel supported, heard, and taken care of.

At Trident, I help manage scheduling, patient communication, follow-ups, events, community outreach, and social media content. From booking evaluations to helping organize golf and performance events, creating graphics for social media, and keeping patients informed, I’m usually behind the scenes making sure everything runs smoothly.

I love being part of a team that helps people move better, feel stronger, and get back to doing what they love. My goal is always to make every patient experience feel personal, welcoming, and stress-free, with a little fun and positive energy along the way.

If you ever need help, have questions, or are not sure where to start, I’m always just a text, call, or DM away!

What our clients are saying

Serving active adults and athletes in Rockville Centre and across Long Island

Trident PT is in a beautiful gym and Matt is a superstar PT! He spent so much time with me, evaluating every muscle and creating a comprehensive plan for me. He was patient, kind and super knowledgeable. Hes got the gym space, the know-how and the personality. Its a win all around if you go to Trident!
Sally Shatzkes
Whether you are rehabbing an injury or looking to improve athletic performance, Trident Physical Therapy is the place for you. Matt works one on one with each client, and he will give you a program to follow that will target the areas that need improvement. Matt is not only a PT, but he is also a strength and conditioning coach who understands how the body needs to function in athletic performance. You will not be disappointed.
Mike Meehan
I started working with Dr. Matt to prevent injuries during my Hyrox training and competition. Dr. Matt listens attentively, is genuinely concerned about your needs, and is highly focused on your goals. He is very thorough and detail-oriented, tailoring therapy and exercises to meet my specific needs of each appt. Additionally, he incorporates manual therapies when needed. I highly recommend Dr. Matt.
M Keena
Dr. Matt is great at what he does, very helpful and knowledgeable in his field. Also a cool down to earth guy making each session enjoyable.
Marco Pantano
I have been doing personal training wit Trident for a couple of months now, and I hace seen an incredible difference even though I did physical training before somewhere else. I was not able to raise my arm due to an injury and ever since I started with Trident I have been able to lift my arms Dr. Matt is great!
Mildred Ochoa
Dr. Matt is a professional. He really cares for his patients and really works on getting them better and back to their daily life activities. Since starting with him I’ve already noticed my self getting stronger. I strong may recommend him. Better than any other PT I’ve ever had hands down.
Gina Greisheimer
Trident Physical Therapy has played a huge role in my MCL recovery journey. Over the past 7 weeks of treatment, I've experienced significant progress under Matt’s guidance. Matt is not only highly skilled but also genuinely caring, helping me through each session to my specific needs and goals. I highly recommend Trident PT to anyone looking for top physical therapy services.
Antonio Testani
Highly recommend! Dr Matt was very helpful
Muhammad Hasnain
Dr Matt is very professional and knowledgeable in his field. Helped me overcome back pain that had been bothering me for past few years. Would recommend to anyone looking for a great physical therapist.
Mohi Rubel
Dr. Matt is the best. He really helped me with my knee and now I feel stronger than ever!
Fahmir Dar
Matt helped build back my confidence in being able to work out by teaching me proper form and good mobility and strengthening exercises to overcome my fear of exacerbating my back problems.
Donna Rodriguez
Dr. Barley is great. Only a few weeks into PT and already having results. Pain is minimizing or gone in certain positions. Definitely recommend.
Rich Alvarez
I've been going to Matt for a few months now treating a hip flexor injury and he's been nothing short of awesome. His approach is very different from others in that his goal is to get you back to what you love doing not just to help you heal but help you get back and be better.
Denise Torres
Dr. Matt at Trident is a caring, intuitive and fun Trainer to work with. I am feeling substantially less pain in my knees and feel much stronger all over. I was depressed and hopeless a few months ago but now i’m full of energy and feel 20 years younger and healthier. Thank you Trident!!!!
shoshan ghoori
Trident PT is amazing!! I worked with Matt for 3 weeks when I had horrible back pain after delivering my first child. I could not even walk up my stairs and saw results in just a few days!! Highly recommend!!!
Molly Yetman
My experience with Trident Physical Therapy has been fantastic. I initially started working with Matt after a shoulder injury and within two weeks I was back to 100% health. Their programs have not only helped with injury recovery and prevention but are great for overall fitness. I look forward to continuing to work with Matt and his team and would recommend his programs to anyone!
John Palladino
Dr. Matt is great...currently helping me with back and shoulder issues. Bonus is getting overall stronger while addressing imbalances.
Peter Barlin
Dr Barle was amazing in helping me recover from a fractured femur after a bike accident. As a cyclist, I needed to get back on the bike quickly, and he has made that possible with a personalized plan. Highly recommend!
Matt Serra
Dr. Matt Barle was great to work with. Informative and effective at identifying root causes of issues. Builds out plan for recovery and improvement based on needs. Sessions come with a phone app that includes an in-depth training program with videos for each workout, tracking modules for trends, and messaging. Overall, would definitely recommend if you're in need of a PT for recovery.
Jack Anderson
The customized plan that Dr. Matt put together really honed in on my calf issues and helped to strengthen areas I had neglected. Would highly recommend!
M Cullen
Working with Dr Matt and Trident Therapy has been a game changer for me honestly, as I am beginning to get a clearer and better understanding of my own body, its mobility and flexibility, as well as the care and consideration that is put into every visit and training session. It’s been such an amazing experience. Thank you for all the effort and devotion put into my sessions.
john snyder
Dr Matt is awesome. I do a lot of competitive running and have dealt with many injuries over the years. Matt has helped me fix a bunch of them since we’ve started working together and I’m running better than ever. The app he uses to prescribe and track strength work is excellent and the videos that come with each exercise are very helpful. Huge fan of Dr Matt!
david putterman
Dr Matt at Trident Physical Therapy is great! He is very knowledgeable and was so kind and friendly too! He really took his time with me during my evaluation, explaining the best exercises to relieve the pain in my knees. I would highly recommend him to anyone who wants more from their physical therapy experience.
jenn trotta
Matt is a great therapist, knowledgeable and hands on the entire time. I prefer working 1 on 1 with a therapist and that is exactly what you get at trident physical therapy.
Thomas McFeely
I started working with Dr. Matt while on the tail end of my recovery from a broken ankle. Working with him helped me start running long distances again and regain most of my speed before the injury. He tailors the program weekly to your progress and is super responsive for any questions. Would highly recommend!
Mike Sorvillo
I’ve been working with Dr. Matt for about 2 months now and I’m so happy with my progress! I came to him with persistent back pain (mom of 2 little kids and constantly lifting). I’ve been mostly pain free and feeling so much stronger in general. Day to day tasks are must easier and I’m feeling so much better. I would highly recommended him! So worth it!
Nicole Andrade
I’ve had a great experience at Trident PT! Dr. Barle is knowledgeable, personable, and professional. You can tell he genuinely cares and wants to help you get better. I started sessions for knee pain but he has also helped me work through a sprinted ankle and a prior wrist injury. His supplemental workouts for home and detailed and easy to follow with videos. I highly recommend Trident PT!
Kelly Ottinger
I can’t say enough good things about Matt and Trident PT! I was having chronic lower back pain for over a year and Matt was able to not only make the pain go away but show me how to optimize my workouts so the pain never comes back! Thanks again!
Kathryn Durdaller
I have so many wonderful things to say about how amazing Matt is, I don’t know where to start!! Not only is his untraditional approach AMAZING (& better than the years of PT I have tried other places) but he cares so much about getting you to feel good! He genuinely cares and listens. Not to mention he is brilliant and understands the body. I wish i found him sooner!!
Cara Voglino
I injured my AC joint playing lacrosse 2 months before my season and thought I’d never be able to return to lacrosse in time for my season. Spencer’s rehab plan strengthened my shoulder and got me back to playing and training pain-free in just a few weeks. Highly recommend!
John Kelley
I was struggling with sciatica for months before seeing Dr. Spencer. His thorough assessment and focused treatment plan relieved my symptoms. Through a combination of manual therapy and specific exercises, I’ve seen amazing progress and can finally move without pain.
MARLA CANO
I went to Dr. Spencer after a calf strain. His exercises not only tamed my pain, but also improved my strength and explosiveness, giving me the confidence to return to sprinting and soccer with zero symptoms.
Sage Gibbons
Dr. Matt is extremely knowledgeable, he listened to my concerns regarding my knee pain and was able to provide information to help me better understand what the root cause of my discomfort. I appreciated the ease of the app he uses to communicate and gives overview of what we did during our session to help me continue to strengthen my knees. I would highly recommend Dr. Matt, the location has parking making it extremely convenient as well.
Jessica Hayes
A cut above the rest, fantastic experience at Trident Physical Therapy!
Judah Schiff
Dr. Matt is awesome!! He assess your needs and gets to work building a custom program specifically to meet your needs and activity level. He has wonderful follow up and checks in to see how you are managing with home exercises. I absolutely recommend his PT/training to anyone who is seeking pain relief and getting stronger.
Diane Campbell
I am very satisfied with the runner's knee program. I was dealing with knee pain that prevent me to run. Thanks to this awesome program, after the first session I felt relief. now I’m on week seven and knee pain is completely gone Dr. Matt is exceptional and highly knowledgeable. Highly recommend
Moises Sanchez
Dr. Matt helped my Mom move better and feel stronger- would definitely recommend his services!
Clare Yetman
Matt has been fantastic to work with. He builds a customized plan based on your needs, is responsive to feedback and has always been flexible in his schedule to accommodate my chaotic work schedule. I have been struggling with bad lower back issues and matt has systematically helped build a program to get me back to working out and not having to worry about my back pain anymore. Highly recommend !
Adam Denenberg
I am a 19 year old who came in with a bad back and began working with Doctor Spencer. I am 2 months in with no back pain nor complaints. I love how prepared he is for every session and how much he truly cares about my growth. In conclusion I am a huge golfer and he has helped me improve the speed of my swing drastically.
Michael Davis
Matt is great at what he does. Very educated and patient. He will help you achieve your goals whatever they may be.
Rookie OfTheYear
Working with Matt has been an excellent experience so far, and the facility is stellar. Even though my issues are a little nebulous, I'm already impressed at weaknesses he's noticed and I'm excited to keep moving forward!
Tristan Martin
Dr. Matt is a real star. He has a great demeanor, explains things in easy to understand terms and most importantly helps recovery and injury prevention. He did wonders for my wife's shoulder and my tight hips. He really re-defines Physical Therapy!!
Patrick Curtin
I worked with Dr.Spencer for injury prevention as a volleyball player. I had a great experience and could really see a difference in my athletics. Every session was carefully planned with lots of attention to detail. Highly recommend!
Keira Birk
I have been working with Matt for about 5 sessions so far and am already seeing great progress. He truly creates a great program to get me strong in my injured area as well as the weaker points of my body. I highly recommend him to anyone including athletes!!!!
Brooklyn Mercer
I've been working with Spencer for 2 months now on an ankle/calf injury and some longstanding shoulder/neck issues and I'm back to feeling stronger and more confident than ever. Their focus on active rehabilitation has been the real game changer vs traditional physical therapy techniques. The body heals through movement and pushing the envelope, these guys understand that, so I highly recommend them over traditional PT options.
Josh Howell
I have worked with Dr. Barle for the past 6 months and the increase in my flexibility and stability has amazed me. I liked his program so much that my husband is participating now.
Robert Krendel
My son is a high school athlete and his soccer coach suggested he go to Trident for strengthening and overall performance support. He really likes seeing Dr. Spencer and feels that his weak areas are getting stronger which is great. The facility is extremely nice - clean and well maintained and the atmosphere is relaxed and not overly crowded. Flexible with scheduling as well.
Catherine Ryan
Trident Physical Therapy is amazing!! The level of care and personalization is unmatched. Working 1:1 with Matt has helped with my pain and confidence with heavier weights. Every week is different and builds on the last week.
Amanda Hayes
The BEST in the business!
Jeannine Palladino
Spencer was amazing. I walked in there with lots of pain and couldn't move my neck. After doing a thorough evaluation he did physical therapy on my neck and back. After the physical therapy he brought me into the gym and did a bunch of exercises that relieved all the pain and tension that I was feeling. I highly recommend this man.
Michael Riccio
I have been working with Dr Matt Barle at Trident Physical Therapy in Rockville Centre for about five weeks. He listens well and has great technique and training. He demonstrates real commitment to helping me achieve my goals. I am highly satisfied.
Theodore Werner
Matt is a terrific PT and a great guy. He takes the time to examine you properly to really understand your injury before developing a custom program that’s specific to you. I trained with him for my right shoulder and he created a program that really helped and was unique to my shoulder issues. I highly recommend him.
Mark Murphy
I really like this place here there is good service and a great environment
Micheal Israilov
I can’t recommend Matt enough. He is very professional, knowledgeable, and genuinely invested in my progress. His plan has left me feeling stronger, more confident, and motivated to keep improving.
Alex L
Started working with Spencer a couple weeks ago for mid back and knee pain while running. Very happy with the support and plan to strengthen areas of concerns to minimize strain. Very knowledgeable, facilities are very nice, the app is very user friendly and a great way to continue the work outside the sessions
Maggie O'Shea
Dr Spencer it’s by my side for the whole hour I injured my forearm and my shoulder, with his help and exercises. I am now able to lift my shoulder completely and resume my workout and date day activities! Thank you, Dr. Spencer
Michael J Ciofalo
Spencer was able to develop a plan to strengthen my shoulder. After years of pain I feel much better without needing surgery to repair.
Paul Carrozzo
Overall great experience. Really listen to my concerns and came up with an action plan to address them. Highly recommended
Mike Fagan
Spencer is great to deal with. Adjusts plans as necessary. Would recommend and use again
salriv0921
I had been dealing with pain for about a year before starting physical therapy, and working with Spencer completely changed that for me. The treatment plan was personalized and actually effective, I feel back to myself. I can’t recommend this place enough!
Anna Ludwig

Ready to train without limits?

Start with a free discovery call. We'll talk through your goals, your history, and what hasn't worked before then build a plan around what you're actually trying to accomplish.