The Results You Expect. The Care You Deserve
Providing Quality Care in a Welcoming and Professional Environment
Now Offering Shockwave Therapy


Welcome To ProActive Physical Therapy & Sports Rehabilitation
Our History
Your Physical Therapy and Sports Rehabilitation in Valhalla, NY
For over 20 years, our privately owned family practice has been dedicated to providing exceptional and personalized Physical Therapy to our friends in the community.
Our Philosophy
At ProActive Physical Therapy & Sports Rehabilitation, we focus on hands on, manual therapy combined with therapeutic exercise and education, to provide a comprehensive treatment plan. We learn how your injury or condition have impacted your daily life, and determine how best to return your joints and soft tissue to optimal function.
Our Mission
Our mission is to be in service to our community, utilizing our advanced training and years of clinical experience, to return each individual to their optimal level of function.
Manual Therapy
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Graston Technique
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LSVT Big
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Vestibular Rehab
We properly identify and diagnose inner ear pathologies. Various treatment strategies are employed to eliminate dizziness, nausea, and vomiting caused by vertigo and other inner ear pathologies.
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Blood Flow Restriction (BFR)
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Shockwave Therapy
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Welcoming New Patients
No matter whether your condition was caused by a sport, work accident or otherwise, we welcome the chance to serve you.
Meet The Team
Demetrios Farmakopoulos
MSPT, OCS
MSPT, OCS Demetrios Farmakopoulos, founder of ProActive Physical Therapy, brings nearly 30 years of experience and a personal commitment to patient ca...
Read MoreDemetrios Farmakopoulos
MSPT, OCS
MSPT, OCS Demetrios Farmakopoulos, founder of ProActive Physical Therapy, brings nearly 30 years of experience and a personal commitment to patient care. Holding a Master’s degree in Physical Therapy from Ithaca College and board certification as an Orthopaedic Clinical Specialist (American Physical Therapy Association), Demetrios has honed his assessment and treatment skills into a seasoned clinician. His extensive experience in private practice allows him to effectively treat a broad spectrum of orthopaedic and neurological needs. As a former competitive athlete in sports ranging from basketball and rugby to triathlons and mountain biking, Demetrios understands the importance of peak performance and focuses his sports rehabilitation on improving on-field function. He prioritizes hands-on manual therapy, believing it fosters a genuine connection with patients and ensures the highest quality care. In his free time, Demetri can be found enjoying a variety of outdoor pursuits, including mountain biking, hiking with his dogs, and snowboarding.
Tunde Guttengeber
MSPT
Tunde graduated from Mercy College with a B.S. in Health Science in 2001 and with a Master of Physical Therapy degree in 2004. She is experienced prim...
Read MoreTunde Guttengeber
MSPT
Tunde graduated from Mercy College with a B.S. in Health Science in 2001 and with a Master of Physical Therapy degree in 2004. She is experienced primarily in outpatient orthopedics treating surgical and non-surgical conditions. She has also worked in long-term, sub-acute and inpatient rehabilitation settings for 10 years.
Her interests include treatment of various injuries including shoulder problems, joint replacements, sports and work injuries, as well as chronic pain and the promotion of overall health and wellness. She has completed many continuing education courses such as Kinesio Taping, shoulder rehab, spine rehab, yoga and Pilates.
In her free time she likes to read, work out, and she enjoys cooking and baking as a form of relaxation.
Kaelyn Ragonese
DPT
Kaelyn received her Doctorate of Physical Therapy from Franklin Pierce University and Bachelors in Exercise Science from Hofstra University. She holds...
Read MoreKaelyn Ragonese
DPT
Kaelyn received her Doctorate of Physical Therapy from Franklin Pierce University and Bachelors in Exercise Science from Hofstra University. She holds certifications in LSVT Big, Pain Reprocessing Therapy,Schroth Method for Scoliosis, and Graston Technique. Kaelyn believes in blending manual therapy with an evidence-based approach to exercise in order to yield the best results. She is passionate about educating her patients on their condition and different lifestyle adjustments in order to promote independence on their journey towards an optimal level of function. In her free time, she enjoys playing intramural sports, spending time with her friends and family, and traveling to new places.
Matthew Maraia
DPT
Matthew, a native of Thornwood, received his BA in Biology/Pre-Med from Boston College in 2017 and his Doctorate of Physical Therapy from Stony Brook ...
Read MoreMatthew Maraia
DPT
Matthew, a native of Thornwood, received his BA in Biology/Pre-Med from Boston College in 2017 and his Doctorate of Physical Therapy from Stony Brook University in 2021. Matthew’s treatment philosophy takes a holistic approach, recognizing that the area of pain is not always the root cause. He uses a combination of hands-on manual therapy and targeted therapeutic exercises to not only build strength and stimulate muscle growth but also to cultivate resilience in his patients. This philosophy is reflected in his personal life as well, where he enjoys an active lifestyle that includes weight lifting and hiking, spending time with family and friends.