Our Doctors


Kathleen's intention is to treat every patient as a unique individual, requiring a precise treatment plan and home exercise program. She uses a comprehensive assessment to examine the body as an entire unit, not just one injured segment. Whether you are an elite athlete, weekend warrior, or Average Joe, Kathleen's primary goals are to enhance your biomechanics, prevent reinjury, and ultimately return you back to activities you love.


Dr. Kershisnik Sieg's physical therapy experience includes: adolescent sports medicine at Children’s Hospital, outpatient orthopedics, running/gait analysis, post-operative rehab, and women's health. Additionally, Kathleen has experience in treating high school and college athletes while working in Regis Jesuit HS and The University of Wyoming's athletic training room.


I am a Colorado native that enjoys everything outdoors, listening to country music, watching sunrises at Red Rocks, and spending time with my friends, family, and husband. I played golf for the University of Wyoming and became their first 4 year academic all american golfer. While I still enjoy playing the game, I have a greater passion for teaching it now! Those who know me best will tell you I have a loving yet very competitive spirit that I can thank my 2 older brothers for!


  • Undergraduate:

    • B.S. Kinesiology - University of Wyoming

  • Graduate:

    • Doctorate of Physical Therapy - University of Colorado Anschutz Medical Campus

  • Certifications:

    • Functional Dry Needling


  • Working with Golfers & Runners

  • Adolescent & Collegiate Athletes

  • Functional Dry Needling

  • Graston Technique

  • Cupping

  • Corrective Exercise

  • Rock Tape

  • Running/Gait Analysis



Let's Get Physical