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Availability last updated 09/05/2025
Sonja grew up in the suburbs of Minneapolis, Minnesota and after many years of competitive Irish dance she was motivated to work in the field of physical therapy. She received her Associates degree as a Physical Therapist Assistant from Anoka-Ramsey Community College in 2018. She worked for two years for a short-term rehab care facility in south Minneapolis, then returned to school to finish her Bachelor’s degree in Exercise Science at Dordt University in Sioux Center, Iowa. After graduating in spring of 2022, she and her husband Joseph relocated to the Austin area.
Sonja is passionate about her role in helping individuals reach their personal goals with physical therapy and loves watching her patients’ confidence grow through the rehabilitation process. She enjoys coming up with creative ways to make PT fun and finds it an incredibly rewarding field of work.
Outside the clinic, Sonja enjoys teaching Irish dance, reading, crocheting, listening to music & podcasts, playing the piano, watching sports, staying in touch with her friends and family back in the Midwest, working out, and exploring the Austin area with her husband.
Sonja Wanninger
Physical Therapist
3601 W. William Cannon Dr
Suite 215
Austin, TX 78749
Colin is from Corpus Christi, TX where he ran track in high school. In 2019 he received his bachelor’s degree in kinesiology from The University of Texas at Austin. Colin’s passion for physical therapy started when he observed at Austin Sports Medicine for a class. He later worked as a technician at ASM, gaining lots of experience in the outpatient orthopedic setting.
He received his Doctorate in Physical Therapy with high honors from the University of St. Augustine in Austin, TX in 2023. He is currently the second resident in the ASM program, working towards being a board-certified orthopedic specialist (OCS).
Outside of the clinic, you can find Colin being outdoors, enjoying Austin’s delicious food, and spending time with his significant other.
Colin Grillo, DPT
Physical Therapist
3601 W. William Cannon Dr
Suite 215
Austin, TX 78749
Austin Sports Medicine is a prestigious orthopedics and sports medicine practice serving the community in and around Central and South Austin, as well as Bee Cave, Cedar Park, and Pflugerville, Texas. We’re proud to offer patients access to experienced orthopedic surgeons who can provide specialized treatments like total joint replacements, orthobiologics, and fracture care.
Our practice specializes in hip replacements, as well as knee, ankle, and shoulder replacement services. Our surgeons use minimally invasive techniques to speed up patient recoveries.
Our specialists treat a variety of pain conditions, including knee pain, foot and ankle pain, arthritis, and spine injuries. Depending on the reason for your visit, we may recommend physical therapy, trigger point injections, sports medicine rehabilitation, or a consultation with one of our team’s expert surgeons to ensure the best outcome for your treatment.
We use cutting-edge treatments and technology, including on-site magnetic resonance imaging (MRI), and strive to meet patients’ needs through a shared decision-making process. No matter why you come to Austin Sports Medicine, we aim to see you quickly (often next-day or even same-day appointments) and believe you deserve the highest standard of care.
To learn more about the specialized services available at Austin Sports Medicine, call the nearest office or request your appointment online today.
Mattye Mason, DPT
Physical Therapist
3601 W. William Cannon Dr
Suite 215
Austin, TX 78749
