Orthology Chelsea


Orthology is an innovative solution for rapid recovery from pain, injury, and surgery. Our goal is simple. To get you back to a pain-free life as quickly as possible.

We know what it takes to break the Cycle of Injury. Our approach goes beyond just treating the symptoms you’re feeling today, and g...

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Catherine Toner


imgCatherine Toner

Originally from New York, Catherine Toner trained for her Masters in Physical Therapy at Northumbria University, located in Newcastle upon Tyne, in North East England. Passionate about her role as caregiver, with a great record of successful outcomes, her training in the U.K. translates beautifully to treatment programs here at Orthology. She’s always putting others first, and knows that building a relationship of trust with a patient is the foundation of great care. The rewards are many. Seeing patients achieve their goals is sheer joy! Focused on long-term health, Catherine knows that when patient and practitioner work together and communicate, the recovery process is transformed. She’s always educating patients about their condition. It’s a team effort, maintained by sincere and open dialogue. By keeping each patient fully engaged in their own treatment, the path to restoring full function is much easier–and shorter. People stay committed to treatment in the clinic and especially in the work they do at home. Catherine has seen the benefits in her practice again and again. When she’s not working, Catherine is dedicated to staying fit. She especially loves to swim. She’s also known to a little shopping, and enjoys spending time with friends and family. She is certified in Sports Rehabilitation and the Graston Technique, which uses patented instruments to treat acute, chronic, and post-surgical soft tissue injuries.

Sharon Pan


imgSharon  Pan

Orthology is an extraordinary team of providers, with a wide-range of backgrounds, educational experience and cultural touchstones. Sharon is a welcome addition—and fits right in! When put on the spot by the question “if a friend or family member had to describe you in one word, what would it be and why?” Sharon stepped up to the challenge—as she has in all her endeavors: “Adaptive. Having grown up overseas, attending school in both Asia and in the states, I’ve been exposed to many different cultures, beliefs and personalities. As a result, I’ve learned how to grow and adjust to a multitude of different situations.” What better trait could a physical therapist have than the ability to “adjust to a multitude of different situations?” Indeed, the fundamental notion at Orthology is that each patient is unique, their pain personal, and care is customized to fit that individual’s needs. A graduate of Massachusetts General Hospital, Institute of Health Professions, Sharon loves traveling, exercising, reading –and especially running. She knew from an early age that she wanted to work in the health related field, but it wasn’t until her college years that she really explored what she calls “the dynamic and ever-evolving field of physical therapy.” She embraces the challenge of making clinical decisions, the opportunity to help individuals change their lifestyle through movement and exercises, and working with patients through the entirety of their care—and ultimately, to enjoy long-term health!

Yannis Mavromatakis


imgYannis Mavromatakis

Yannis Emmanuel Mavrommatakis earned his Doctor of Physical Therapy degree from Columbia University, where he specialized in adult neuro-rehabilitation while maintaining a deep interest in sport rehabilitation. Yannis grew up in England and studied in London, where he earned a Bachelor’s Degree in Biology, a Master’s Degree in Neuroscience and a PhD in Developmental Neurobiology at University College London. He came to New York to work as a research scientist at Columbia University in the Genetics and Development department, where he worked for eight years analyzing the eyes of fruit flies. While coaching the Columbia Medical School rugby team, Yannis suffered a serious knee injury and underwent physical therapy at Orthology. It was the high-quality treatment he received at Orthology that sparked his interest in physical therapy and sent him back to school to study once more and embark on his second career. Yannis believes in using evidence-based practice and designs individualized rehabilitation protocols to reduce pain and restore function. As a former patient himself, Yannis understands the importance of effective physical therapy and resuming normal physical activities as soon as possible. He’ll provide the knowledge, support, and encouragement you need to help you attain your goals. Yannis also has a passion for travel photography, rugby, soccer and the occasional pint of ice cream.

Jun Zhu Zhang


imgJun Zhu Zhang

Jun Zhu Zhang earned his degree of Doctor of Physical Therapy with Honors from Columbia University, completing an Advanced Orthopedic Track. As a native New Yorker, Jun graduated Magna Cum Laude from Skidmore College, receiving a Bachelors of Science degree in Health and Exercise Sciences. After Skidmore, Jun worked at NYSportsMed/Orthology as a PT Aide, assisting patients in their rehabilitation journey. It was here that his passion for helping others grew along with the knowledge that the application of evidence based techniques led to better, faster results. Jun became a physical therapist to play a vital part in patient journeys towards health and wellness. He believes that living a healthy life and making health conscious decisions are not always easy, rather they take time, practice, diligence and consistency. This thought process translates similarly to many injuries, aches and pains. He strives to reach both short and long term goals by easing each patient’s unique concerns and helping them to understand their injury at all levels– emotional, intellectual, and musculoskeletal. Friends and family describe him as “positive,” and there is no doubt his patients would say the same. Jun’s “can-do” optimism, aptitude for problem solving, and unshakeable determination make him pivotal in a therapeutic setting. As Jun states, “I believe that it is up to me to help guide you, and for you to make the decisions and put in the effort. Full function is restored by inspiring confidence that they will get back to doing the things they love.” Jun continues to be a fierce advocate for every patient’s overall fitness, knowing that being active is the real path toward lifelong good health.

Pallavi Shah


imgPallavi Shah

Pallavi Shah completed her Bachelor’s Degree in Physical Therapy from N.I.O.H. in Calcutta, India, the country’s leading orthopedic institute. She then earned her Master’s Degree from Queen Margaret University, UK. Described by friends and family as straightforward and positive, Pallavi is right at home at Orthology. She’s inspired by her work, dedicated to “correctly diagnosing and treating her patients to the point of maximum recovery.” As you’d expect, helping her patients achieve their goals is very satisfying and fulfilling for her, and has been the key motivation for her to learn new techniques. 15 years into her physical therapy career, Pallavi’s passion for her craft has not dimmed. She’s built up expertise in Dry Needling, Kineseo Taping, Custom Orthotics, TMJ Rehab, Vestibular Rehab, Spinal Manipulation, Myofascial Release, Pre /Post Natal Rehab and Ergonomic Rehab. An avid runner, she says Runnersworld.com is her go-to website. Running has shown her that maintaining an awareness of your body, staying active, and always hydrating are just good health fundamentals. Favorite athlete? Of course, she’d pick the guy who just keeps on running, Roger Federer. And what professional is more straightforward and positive than the famed tennis star? Pallavi also enjoys cooking. In fact, she says “Food is Nirvana” for her! When not cooking up some Nirvana or running, she enjoys spending time with family and continuing to enhance her physical therapy treatment skills. One more thing. Pallavi’s motto is “achieve an active, pain free life.” She’s a natural Orthologist!

Jack Renfroe


imgJack Renfroe

Jack Renfroe engages all of his patients with energy and enthusiasm. It’s part of what makes him so effective as a physical therapist. Given his passion for sports, you would have guessed he’d bea natural. “I believe that these interests help me relate to patients,” says Jack. It’s true! He wants to get patients “back in the game,” doing what they love to do. His vibrant spirit makes him a great caregiver—one that gets transformative results. Every person that comes to him for treatment knows that Jack is teammate, coach, and trainer all rolled into one. But Jack knows that PT is not a sport, and he effectively translates his passion for sports to provide successful care based on research, proven techniques and the latest therapeutic advances. He’s clear on his objectives: to promote health and wellness to all ages; to give patients the tools to lead a healthier life; to make sure patients get better and accomplish their goals; to educate them and make sure they truly understand their condition. Jack grew up in the heartland—Oklahoma—and later graduated from the University of Oklahoma in Norman, his hometown. A soccer player, he still loves to compete. When he’s not finding fun new ways to exercise, treating patients, pursuing his love for cooking, or traveling, he’s likely checking scores on ESPN.com. And when asked who his favorite all time athlete is, he goes with the best: Jack Nicklaus. A proven winner. It makes sense. Because the positive energy and professional focus that Jack Renfroe brings to treatment makes everyone he treats feel like a winner.


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