North Island Physical Therapy is well known in the community for achieving excellence in one to one manual therapy. Our method is based heavily on the practice strategies established by the Institute of Physical Art. This specific strategy is focused on manual therapy techniques designed to improve ...

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Kate Byrne


imgKate Byrne


Kate received her Bachelor of Arts from Binghamton University, where she double majored in Biology and Spanish. Kate then went on to attend Stony Brook University where she received her Doctorate in Physical Therapy. During this time, Kate completed clinical rotations in the acute care setting, outpatient orthopedics with an emphasis on treating the athletic population, and manual outpatient orthopedics. While at Stony Brook, Kate also volunteered with the program Fit Kids for Life. This is a program designed to help kids maintain an active lifestyle and prevent childhood obesity and cardiovascular disease. Kate was inducted into the Alpha Eta Honor Society whose members consist of the top 20% of the graduating class. Kate aspires to take continuing education courses that focus on treating the pediatric oncology population as well as courses from the Institute of Physical Art. In her spare time Kate enjoys playing tennis and going on hikes.

Robert Mosca

Doctorate of Physical Therapy

imgRobert Mosca


Following his undergraduate education, at the University at Albany, Rob received his Doctor of Physical Therapy degree from Stony Brook University. After completion of the Doctorate program he has concentrated his focus on orthopedic physical therapy. He specializes in hands on treatment of orthopedic and post surgical conditions and has a true passion for sports related injuries. Rob is certified through the Titleist Performance Institute as a medical professional which makes him a great fit for managing golf related injuries and performance. Rob also has extensive experience working with various balance and vestibular disorders including positional vertigo, Ménière's disease, post concussion syndrome and more. Robert is also an avid runner who has now completed five full marathons with his eyes set on many more. With this passion comes an extensive knowledge base when treating running based injuries and analyzing runner's strides.

Mary Chatterton

No Credentials Or Degree Added



Mary brings 30+ years of experience in orthopedic physical therapy with a BS in PT from Ithaca College and an advanced masters degree in orthopedic and sports physical therapy from the University of Indianapolis. Mary brings to the table a wide berth of experience in the world of orthopedic physical therapy with an emphasis on manual therapy, patient education, and exercise prescription with her patient-focused treatments. She has worked extensively in the outpatient clinical setting and has addressed injuries that are both acute and chronic in nature. Mary has also worked in the home setting where she managed acute post op rehabilitation of total joint replacements and surgical management of fractures and spinal surgeries. Mary is an avid outdoor enthusiast, and while she no longer runs in marathons, she can be found on her bicycle or the trails. These life experiences spill over into her work and her compassion for the patient striving to return to a higher quality of life.


2500 Nesconset Highway, Suite 22 B
Stony Brook, NY 11790


We kindly ask that you notify us no later than 24 hours in advance for all rescheduling and cancellations. Thank you.


Hospital for Special Surgery’s Rehab Network has over 170 therapy clinics recommended by HSS after successfully completing the Hospital’s rigorous inspection and credentialing process.  It provides patients with a resource for locating exceptional, convenient therapy providers in their own communities.


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