Dr. Claire Rathjen is the Co-Founder and Owner of C.O.R.E. Physical Therapy and Sports Performance in Omaha, NE. She earned her Doctorate in Physical Therapy from Creighton University in 2008 and has since built a career specializing in sports performance, rehabilitation, and athletic populations.
Dr. Claire is an accomplished strength athlete and continues to compete in powerlifting at both the state and national level. She currently holds multiple Nebraska state records in the 105 lb and 114 lb weight classes and actively trains competitive athletes in strength sports.
In addition to her clinical work, Dr. Claire serves as an Adjunct Faculty Professor at Creighton University Medical Center, where she has lectured on topics including dry needling, sports performance, research, and kinesiology for athletic populations since 2016.
She is certified in dry needling through the Myopain Institute and integrates this treatment into her physical therapy practice. Dr. Claire is also fully certified in medical bike fitting and has over 13 years of experience incorporating bike fit assessments into patient care. Her expertise in slow-motion gait analysis for runners is a key component of her comprehensive sports rehabilitation approach.
Outside of the clinic, she enjoys running, triathlons, traveling, and strength training. She is also a passionate cat lover and co-owns CORE alongside her husband and best friend, Dr. Mark Rathjen, where they work side by side to deliver exceptional physical therapy and sports performance care in Omaha.
Dr. Claire is dedicated to helping patients and athletes recover from injury, improve movement efficiency, and perform at their highest level through detailed, individualized treatment plans.