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Welcome to

Gary M. Souza Physical Therapy & Associates in Diamond Bar, CA

Welcome to Gary M. Souza, Physical Therapy & Associates where every patient can feel secure about getting the highest quality treatment in a comfortable environment. From sports injuries to orthopedic problems to work related injuries and more, over 25,000 patients and 600 referring physicians have trusted Gary M. Souza, PT & Associates to treat them professionally and comfortably. Every patient is treated with the dignity and respect they deserve; for medical professionals know successful treatment involves a partnership between therapist and patient.

Our Philosophy

Our therapeutic philosophy focuses on improving current functioning and preventing future complications through exercises and manual treatment that increase flexibility and muscle strength, and decrease pain. While in our care, you can expect to receive:

  • Education about your body and condition
  • An exercise program tailored to your needs to continue treatment at home
  • Pain management strategies
  • Manual therapy from an experienced and caring therapist
  • Information about injury prevention

Mission Statement

Through a partnership between skilled physical therapists and dedicated patients, the mission of Gary M. Souza, PT & Associates is to facilitate optimal rehabilitation in a positive, caring environment.

    • Call Us Today (909) 861-3511
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    Orthopedic and Sports Therapy
    Orthopedics | Sports Therapy | Physical Therapy | Gary M. Souza, P.T. & Associates | Diamond Bar CA

    The therapists at Gary M. Souza PT & Associates are prepared to provide the best quality care for your condition, to get you back to doing what you love most. At Gary Souza, PT & Associates, we provide a variety of services for conditions from head to foot, as well as sport-specific evaluation, intervention, and prevention. Visit our Physical Therapy page to learn more about what we can do for you.

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    Hand Therapy
    Hand Therapy | Gary M. Souza, P.T. & Associates | Diamond Bar CA

    GMSPT's hand therapy is led by Liz Souza, DPT, CHT. Dr. Souza is a Certified Hand Therapists with extensive training on the mechanics and impairments of a variety of upper extremity conditions. Our evaluation and hands-on care are our most significant tools in the rehabilitation process. We work closely with your physician to develop the best treatment options and follow the appropriate protocol for your condition. Visit our Hand Therapy page to learn more about Dr. Liz Souza and the conditions we treat.

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    Personal Fitness & Pilates
    Personal Fitness | Pilates | Gary M. Souza, P.T. & Associates | Diamond Bar CA

    GMSPT offers a personalized fitness training program, titled ProStar. Our ProStar team creates dynamic fitness programs tailored specifically for you.

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    We also offer in-clinic Pilates training. Pilates is a total body workout designed to get you fit and energized. It concentrates on building core and muscle strength, and increases flexibility, range of motion, stability and balance. We can work with the post rehabilitation patient all the way to the seasoned athlete.

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    Workers' Compensation Injuries
    Workers' Compensation | Physical Therapy | Gary M. Souza, P.T. & Associates | Diamond Bar CA

    Since 1981, GMSPT has worked closely with physicians, employers, case managers, attorneys, and more importantly, patients, to facilitate returning injured workers to work as soon as possible. Our therapists have experience with the Workers' Comp system and provide adequate communication with decision-makers to assist in making choices on returning an injured worker to their optimum ability.

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    Post-Offer Employment Testing
    Post-offer Employment Testing | Gary M. Souza, P.T. & Associates | Diamond Bar CA

    We have contracts with several nation-wide ergonomic evaluation companies, including BTE, Ergo Science, and Fit2Work.

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    Functional Capacity Evaluations
    unctional Capacity Evaluations | FCE | Gary M. Souza, P.T. & Associates | Diamond Bar CA

    Functional Capacity Evaluations are used to test the functioning level of an employee returning to work.

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    • Orthopedics | Sports Therapy | Physical Therapy | Gary M. Souza, P.T. & Associates | Diamond Bar CA
    • Hand Therapy | Gary M. Souza, P.T. & Associates | Diamond Bar CA
    • Personal Fitness | Pilates | Gary M. Souza, P.T. & Associates | Diamond Bar CA
    • Workers' Compensation Injuries | Gary M. Souza, P.T. & Associates | Diamond Bar CA
    • Post-offer Employment Testing | Gary M. Souza, P.T. & Associates | Diamond Bar CA
    • Functional Capacity Evaluations | FCE | Gary M. Souza, P.T. & Associates | Diamond Bar CA
    Success Stories
    • <
      In November 2014, I was in a serious accident that resulted in the need for a bone graft to my left forearm and insertion of a titanium plate with 13 prongs and screws… My wrist wouldn’t move, at all, I couldn’t put my thumb and index finger together, and even tearing a sugar packet open was impossible.

      Luckily, I found Liz Souza…She was amazing – tough, focused on helping me recover, and consistently trying creative strategies…Liz made me a customized brace to assist in getting my hand to turn over. I was able to get back to around 85% of normal, and honestly, it’s a lot farther than anyone expected. If you are interested in making a miraculous recovery, and are looking for a partner to assist and guide you through the process, Liz Souza and her expertise would be a great fit.…

      Troy Kisiel

    • In November 2014, I was in a serious accident that resulted in the need for a bone graft to my left forearm and insertion of a titanium plate with 13 prongs and screws… My wrist wouldn’t move, at all, I couldn’t put my thumb and index finger together, and even tearing a sugar packet open was impossible.

      Luckily, I found Liz Souza…She was amazing – tough, focused on helping me recover, and consistently trying creative strategies…Liz made me a customized brace to assist in getting my hand to turn over. I was able to get back to around 85% of normal, and honestly, it’s a lot farther than anyone expected. If you are interested in making a miraculous recovery, and are looking for a partner to assist and guide you through the process, Liz Souza and her expertise would be a great fit.…

      Troy Kisiel

    • <
      I have spent several months with Souza Physical Therapy following a lengthy hospitalization. I appreciate the individual care and attention that Steve Aviles and the staff have given me. Steve and the therapy plan he designed for me have pushed me and yet I feel safe when he is working with me. At my age, I didn’t think I would be able to progress much after my illness, but Steve has given me the confidence and motivation to continue to improve my strength and balance. I enjoy the atmosphere and friendly reception staff at the Center, and also appreciate their care and cooperation for several of my family members as well. Thank you, Steve and Souza staff!…

      Teresa Ogawa

    • I have spent several months with Souza Physical Therapy following a lengthy hospitalization. I appreciate the individual care and attention that Steve Aviles and the staff have given me. Steve and the therapy plan he designed for me have pushed me and yet I feel safe when he is working with me. At my age, I didn’t think I would be able to progress much after my illness, but Steve has given me the confidence and motivation to continue to improve my strength and balance. I enjoy the atmosphere and friendly reception staff at the Center, and also appreciate their care and cooperation for several of my family members as well. Thank you, Steve and Souza staff!…

      Teresa Ogawa

    • <
      Steve Aviles designed a program specifically for my recovery and worked with me to ensure my success as one might do for a longtime friend…Liz E. was amazing in contacting my provider and setting up appointments and could not have been more gracious. The entire staff knew me and warmly welcomed me with each visit and was a delight in conversation. Everything from my physical treatment to the personal touch of every staff member I encountered was instrumental in my recovery. I have a ways to go before I am fully recovered, but with the guidance of your team of professionals, I armed with the tools I need to improve.…

    • Steve Aviles designed a program specifically for my recovery and worked with me to ensure my success as one might do for a longtime friend…Liz E. was amazing in contacting my provider and setting up appointments and could not have been more gracious. The entire staff knew me and warmly welcomed me with each visit and was a delight in conversation. Everything from my physical treatment to the personal touch of every staff member I encountered was instrumental in my recovery. I have a ways to go before I am fully recovered, but with the guidance of your team of professionals, I armed with the tools I need to improve.…

    • <
      Loved getting to know the staff while I got better. Also, I appreciated the 5pm appointments so that I didn't need to miss work.…

    • Loved getting to know the staff while I got better. Also, I appreciated the 5pm appointments so that I didn't need to miss work.…

    • <
      [They explained] exactly what was wrong and how to go about healing. I have a better understanding of how my body works.…

    • [They explained] exactly what was wrong and how to go about healing. I have a better understanding of how my body works.…

    • <
      The Front Office staff provided written documentation regarding insurance payments prior to my treatment. The Therapist very quickly identified the type of therapy and developed an individualized plan that was flexible for my schedule and travel plans. Most importantly, improvement was realized in just a few days.…

    • The Front Office staff provided written documentation regarding insurance payments prior to my treatment. The Therapist very quickly identified the type of therapy and developed an individualized plan that was flexible for my schedule and travel plans. Most importantly, improvement was realized in just a few days.…

    • <
      As a health practitioner myself, I would rate your practice as exemplary! I will return if additional treatment is needed and I will refer others.…

    • As a health practitioner myself, I would rate your practice as exemplary! I will return if additional treatment is needed and I will refer others.…

    • <
      The truth is, it was the quality of the care I have always received from your team that will bring me back in the future. I first visited your office in the late 80's and the treatment was excellent then, and continues to be excellent today. Thank you again for the highest quality care one could receive.…

    • The truth is, it was the quality of the care I have always received from your team that will bring me back in the future. I first visited your office in the late 80's and the treatment was excellent then, and continues to be excellent today. Thank you again for the highest quality care one could receive.…

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