Move With ONYX.

Physical Therapy and Personal Training, Boston, MA

  • We are experts in rehabilitating people after joint surgeries and other sports and orthopedic surgeries. We deliver high outcomes using various techniques such as manual therapy, dry needling, exercises, and injury prevention education. The aim is to help individuals return to competitive sports or daily activities with utmost satisfaction. Additionally, we focuses on enhancing strength, flexibility, and overall conditioning for long-term health optimization.

  • Using our backgrounds as doctors of physical therapy and strength training, we help people maximize long-term health. We work with anyone from adolescence to older-adulthood, novice to professional athlete make strides in fitness for the long haul.

Which Service is Right For You?

“You won't find a more knowledgeable,  dedicated,  passionate and trustworthy PT than Kyle. I am a professional triathlete who specializes in long course racing. I can’t recommend Kyle highly enough.”

Alice Alberts, Professional Triathelete

Owner and Lead Therapist

Dr. Kyle Mahoney, PT, DPT

Doctor of Physical Therapy

Certified Strength and Conditioning Specialist

Academic Appointments

Adjunct Faculty - Northeastern University

Lab Instructor - Massachusetts General Hospital Institute of Health Professions

Education

Sports Physical Therapy Residency - University of Southern California

Doctor of Physical Therapy - University of St. Augustine for Health Sciences

BS, Exercise Science - University of Connecticut

  • Kyle Mahoney is a Sports Residency Trained Doctor of Physical Therapy and Certified Strength and Conditioning Specialist. He is an Adjunct Professor of Physical Therapy at Northeastern University and Lab Instructor Massachusetts General Hospital Institute of Health Professions. In addition, Kyle serves as an advisor to Meloq, a return to sport device company that creates state of the art of force dynamometers and force plates. His Sports Physical Therapy Residency was completed at the University of Southern California, where he worked with the Los Angeles Angels of Anaheim, and acted as a Lead Strength Coach and Physical Therapist for East Los Angeles College. In addition, he served as the lead physical therapist for the 2019 United States World University Games team. Prior experiences also include internships at Andrews Sports Medicine in Birmingham, Alabama, and EXOS in Phoenix, Arizona, where hundreds of professional athletes in the NFL, NHL, MLB, and NBA receive sports medicine care. Kyle was a strength and conditioning coach intern from 2011-2015 for the Connecticut Huskies, including the National Champion Men’s Basketball program in 2014.

    Former Teams and Organizations

    • University of Connecticut Huskies: Men’s and Women’s Basketball, Men’s and Women’s Tennis, Volleyball, Men’s and Women’s Soccer

    • University of Southern California: Club Sports Teams, Kauffman School of Dance

    • University of California Los Angeles (UCLA) Bruins: Men’s and Women’s Tennis

    • East Los Angeles College: Men’s Football, Men’s Basketball

    • United States World University Games: Track and Field, Tennis, Rhythmic Gymnastics, Water Polo, Judo, Swimming and Diving

Why Rehabilitate and Train with ONYX?

We Teach At Local Universities and Health Science Schools

Choosing a physical therapist who teaches at a Doctor of Physical Therapy (DPT) school ensures you're receiving care from someone at the forefront of the field. We instruct at Massachusetts General Hospital Institute of Health Professions, and Northeastern University Bouvé College of Health Sciences. Their role in educating future clinicians reflects a deep understanding of best practices and a commitment to high standards of care. This expertise can lead to more precise assessments, innovative treatment strategies, and better long-term outcomes for patients.

We Have Advanced Training in Sports and Orthopedic Medicine

Selecting a physical therapist who has completed a sports residency ensures specialized expertise in treating athletic injuries and optimizing performance. Residency-trained therapists undergo advanced, focused training in sports rehabilitation, gaining hands-on experience with athletes across various levels. They develop a deep understanding of biomechanics, injury prevention, and return-to-sport strategies, allowing for more precise and effective treatment. This level of specialization can lead to faster recovery, reduced risk of re-injury, and improved athletic performance, making them an excellent choice for active individuals and athletes.

We are Strength and Conditioning Coaches

Choosing a physical therapist who is also a Certified Strength and Conditioning Specialist (CSCS) ensures a unique blend of rehabilitation and performance expertise. This dual qualification allows the therapist to not only address injuries but also design strength and conditioning programs that enhance overall physical performance and prevent future issues. They understand how to safely progress clients from rehabilitation to peak athletic function, bridging the gap between recovery and high-level activity. This approach is especially valuable for athletes and active individuals seeking to return to sport stronger and more resilient.

What clients say about ONYX

  • "Kyle is extremely knowledgeable about the human body, how it performs, and what is needed for YOUR particular injury and/or rehab. He listens to his client and responds to his/her concerns and questions accurately and with empathy. I could go on, but suffice it to say, I highly recommend Kyle as not only an excellent source of recovery, but as a person with honesty and integrity. You can trust his advice and council 100%. "

    - Danny Caverly, PGA Professional

  • “After years of battling bilateral knee issues and undergoing six surgeries—including a tibial tubercle osteotomy I never fully recovered from—I began working with Kyle at my lowest point. In just six weeks, he has completely transformed my outlook and capabilities. Kyle is an incredible listener, highly intentional, and technically skilled, tailoring every session to my specific needs. His thorough assessments and continuous adjustments to my program have been nothing short of excellent. I feel stronger than I have in years (both physically and mentally). I can't recommend him enough and I’ve worked with over a dozen physical therapists. He’s the best one.”

    - Abigail DeLaney, Director of Operations and Talent Aquisition

  • "Kyle's approach and motivation has accelerated my end goal of getting back to tennis at full strength. His ability to listen and relate to my situation was refreshing. Fantastic and flexible."

    - Matt Pernick, Pharmacist

  • "I have battled chronic back issues for years and have sought extensive treatment with up and down success. I have treated with Kyle for about 5 months, and I am so thankful that I found him. Kyle brings a unique skill set of physical therapy and sports training, which has finally gotten me on the right track. Perhaps even more significant, is his personality and caring approach to his craft. Kyle is an excellent listener who truly cares about his patients. He's a wonderful person, who I am very thankful to know. I highly recommend him!"

    - Mike Pierce, Lawyer

Come Visit Us in Back Bay

Address: 400 Commonwealth Ave, Boston, MA, 02108

Phone: +1 415-991-7792

Or Let Us Travel to You

Anywhere in the greater

Boston area.

Which Service is Right For You?