Our Physical Therapy Team

Beyond the degree and licensing required by law, we certify our physical therapist to meet the highest standards in the industry. Only then can they provide you with service. A core requirement for all our therapists is a loving, caring and helpful personality.

At FYZICAL® in Midvale you'll experience an individualized, supportive approach to physical therapy. One that uses hands on techniques and tailor made exercise programs delivered by expertly trained and licensed Physical Therapists who work one-on-one with you during your therapy sessions. We not only practice physical therapy but we live and breathe it and which results in high patient satisfaction.

Dr. George Shirley

Dr. George Shirley
PT, DPT, MS, ATC, ASTYM and TPI Certified

Dr. George Shirley graduated with a master’s degree in athletic training and a doctoral degree in physical therapy from Shenandoah University in 2005. He founded Fast Track Physical Therapy and Sports Medicine in 2009 after being discouraged by the way that Physical Therapy was being administered around the Salt Lake valley. In the Winter of 2018, Fast Track was rebranded to become: FYZICAL Therapy and Balance Centers (Midvale) and remains fully owned and operated by George and his wife, Maria. 

George has worked in various clinics across the country, as well as with an array of competitive athletes. He has served as an Athletic Trainer for several different professional teams including REAL Salt Lake (MLS), and The Mighty Ducks Ice Hockey organization. He has also worked with a number of high schools and colleges.

George is passionate about soccer, and is currently the head men’s high school boys soccer coach at The Waterford School in Sandy, UT. Since becoming the head coach in 2012-13, the Waterford Raven’s have earned an impressive record, including 3 Utah State Championships and 1 other State Championship appearance that ended with the Raven’s losing in penalty kicks. 

From Acute Care Facilities and Home Health, to high-level outpatient orthopedic clinics focusing on return-to-play for professional athletes, George has treated patients in nearly every scope of health care. As a result of his background in manual therapy, George whole-heartedly believes that each of his patients should receive a personal, hands-on experience. He is also certified in ASTYM (augmented soft tissue mobilization), which is a technique specifically utilized for overuse injuries and has great success treating those types of injuries (tendinosis, plantar fasciitis, tennis/golfer’s elbow, etc) with this technique. He is also TPI certified – TPI stands for the Titleist Performance Institute. Being TPI certified, George believes that each person has a golf swing that is uniquely most efficient for him/her. By screening and assessing the client’s biomechanics, quality of movement, general level of fitness as well as any pertinent medical history – he will help you achieve that uniquely efficient swing.  Most recently, George has developed a passion for helping those with Vestibular injuries and helping to retrain the Balance System through its 3 major components.

George comes from an athletic background, having played soccer at the college level in Virginia, and still loves to experience life through sports. Some of his interests include, skiing and snowboarding in the “greatest snow on earth,” golfing, triathlons, and generally enjoying the great outdoors. Having grown up in east Tennessee, at the base of the Great Smoky Mountains National Park, there is nowhere he would rather be than outside enjoying nature with his incredible family.


  • Knee
  • Shoulder
  • Spine
  • Foot/Ankle


  • Shenandoah University


  • DPT – Doctor of Physical Therapy
  • MS – Masters in Science
  • ATC – Certified Athletic Trainer
  • ASTYM – Augmented Soft Tissue Mobilization
  • TPI – Titleist Performance Institute
Dr. Kris Porter

Dr. Kris Porter

Dr. Kris Porter is an Alabama native and received his Doctorate in Physical Therapy from the University of Alabama at Birmingham (UAB) in 2007. He headed to the Washington DC area post graduation and practiced there for 10 years before moving to the Beehive state in August of 2017. While in the DC region, Kris completed his Board Certification in Orthopedics as well as an Orthopedic Residency Program at The Jackson Clinics. He eventually became director of that program in 2011, and he continues to run this program from Utah remotely.

Dr. Porter is an active member of the American Physical Therapy Association (APTA) and the orthopedic, research, and education sections and has served on several committees related to improving advanced physical therapy practice through residency and fellowship programs. Kris is also an APTA certified “advanced clinical instructor” and has taken students from many universities and had adjunct faculty roles at Marymount University in Arlington, VA. In addition to mentoring students and orthopedic residents, he lectures on low back pain and ankle/foot disorders, as well as on advanced mentoring principles. Kris is co-author of the peer reviewed “Pelvic Girdle” Current Concepts monograph published by the APTA and wrote a chapter on “Plantar Heel Pain” in 2014. Kris is committed to improving the profession of physical therapy globally and has been involved in physical therapy education programs in Peru, Bhutan, Ethiopia and Kenya.

Kris is skilled in treating musculo-skeletal disorders of the entire human machine, except the hand and women’s health disorders. He works with patients of all ages and abilities to include competitive athletes, but he does not work with infants. Kris was a college pitcher and naturally loves overhead athletics, and unfortunately their frequent injuries. However, through various fitness activities, Kris has also grown a passion for treating patients with lower extremity disorders and spinal disorders. Dr. Porter is skilled in custom orthotic fabrication for foot and related disorders of the knee and above. Kris is also trained in Dry Needling and uses this for chronic musculoskeletal pain most frequently. If Dr. Porter is not proficient in treating your condition fully, he is more than happy to recommend another therapist, physician or other healthcare provider that can help manage and restore function as soon as possible, to put the patient on the Fast Track to recovery!

When not treating patients, Kris loves to chase balls and occasionally hit them (e.g. tennis, baseball/softball and volleyball). He also loves to trail run, hunt (basically “hiking” with a weapon), ski and spend time with his wife, son and extended family. Now that his parents and brother decided to make Utah home a few years ago, Kris couldn’t resist the call of the mountains and the friendly people of the Salt Lake Valley.

Dr. Rebecca Flegal

Dr. Rebecca Flegal

Dr. Rebecca Flegal graduated with a Bachelor’s in Community Health Promotion from Northern Arizona University in 2011 and later worked within the school system to promote wellness to 4tth grade children as an effort to teach them skills that may prevent childhood obesity. She continued her education and eventually obtained her Doctorate of Physical Therapy from South College – Tennessee in 2018.

Dr. “Becky” has a special interest in the rehabilitation of dancers, as she has taught dance for 15 years to children ages 2-18. Other areas of interest for Becky include: rehabilitation of children, and women’s health/rehabilitation, and will pursue a clinical specialization in this area, as she is passionate about assisting women in staying active while they are pregnant as well as regaining their fitness levels after.  Even though these are areas of special interest for Becky, the majority of her clinical experience has been with orthopedic injuries for a wide variety of patients and ages.  She loves treating the “whole person” and enjoys working with a variety of conditions including post-surgical, sports injuries, and other orthopedic conditions, as well as vestibular injuries/rehabilitation.

While not in the clinic, you can find Rebecca spending time with her 3 amazing boys. She and her family enjoy spending most of their time outdoors: hiking, camping, backpacking, and skiing.  Some of her favorite trails include: all mountaintops along the Wasatch Front and Coyote Gulch in Southern Utah.

Samantha Johnson

Samantha Johnson
Client Care Specialist

Samantha graduated from the University of Utah, in Kinesiology. She enjoys spending her free-time outdoors – taking full advantage of the beautiful Utah landscape with family and friends. In the winter, she spends her time snowboarding; in the warmer months she enjoys getting outside to hike, bike, rock climb and camp as often as possible.

Samantha originally found Fast Track Physical Therapy and Sports Medicine by shadowing the Physical Therapists as part of her learning experience and helping to figure out if she wants to pursue that profession. By the end of her learning experience, it was such a natural fit that “Sam” was hired and has now served in different roles and continues to evolve and learn as FYZICAL Therapy and Balance Centers (Midvale) grows.

Rob Sirstins

Rob Sirstins
Fyzical Liaison/Marketing Director

Rob grew up in Salt Lake where he excelled in both football and rugby, and was heavily recruited as a college running back. He was also selected to play for the Junior USA Eagles rugby team after high school graduation, but instead chose to follow his dream of playing football at the University of Utah on a full scholarship. Unfortunately, Rob’s football career was cut short due to a tragic car accident.

After Rob’s football career came to an abrupt end, he focused on getting to the gym to retrain/rebuild his body – which he did to a level his doctors told him he would never achieve again. Through his hard work and dedication, he managed to find the rugby pitch again and began making his mark all over the country in both semi-professional and professional leagues. 

Unfortunately, with Rob’s successful athletic career also came numerous injuries: herniated discs in his back, a torn ACL, and sprained AC joints in both shoulders, just to name a few. Desperate to maintain his high-level activity and fitness, Rob scoured the Salt Lake valley looking for physical therapists to help him back to his full potential; however, he generally bounced around from facility to facility with no success – highly dissatisfied. He was eventually referred to Dr. George Shirley at FYZICAL. Once there, Rob experienced one-on-one treatment from George, who was emotionally invested in seeing Rob’s return to the competitive level he was capable of.  After completing that Physical Therapy bout, Rob once again returned to playing competitive rugby and being able to train the way he once was.  Since that initial meeting Rob remains passionate about referring teammates, clients and friends only to FYZICAL Therapy and Balance Centers (Midvale), because he knows they will receive the upmost professional care and treatment. 

Professionally, Rob has over 10 years of corporate sales experience; has founded two companies; is still just as passionate about health and fitness as ever before.  He is excited to be able to share his passion about FYZICAL Therapy and Balance Centers (Midvale), because he has experienced what truly sets it apart from other clinics around the Salt Lake valley. 

Lindsay Reid

Lindsay Reid
Client Care Specialist

Lindsay grew up in Utah, where she played competitive soccer throughout her childhood and high school years.  She still loves Real Salt Lake, and would describe herself as “the typical crazy sports fan”.  Undoubtedly, she considers her greatest achievement in life, being the mother to a wonderful and energetic son.  She loves watching her son enjoy sports the way that she does, and usually spends weekends watching him play basketball or baseball.

Outside of sports and work, Lindsay is an avid Disney fan.  If she is not outside, you are likely to find her reading a Harry Potter book or watching a Disney movie (with or without her son).  Her colleagues would describe Lindsay as fun, outgoing, and full of life.  She is bubbly with a splash of kick, and loves being a part of patients’/clients’ experience as the journey towards their full recovery here at FYZICAL.

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Leader in the health and wellness space, providing private practices with business systems, operational support, clinical education, and proprietary technology and protocols. FYZICAL® is actively changing the healthcare landscape by providing patients with wellness programs and clinical care in: Fall Prevention, Orthopedic and Vestibular Rehabilitation

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