About Us

About Twin Cities Orthopedics

Effective April 1, 2020, Catalyst Sports Medicine integrates into Twin Cities Orthopedics (TCO). Hudson Therapy will be referred to as Catalyst Powered by TCO.

Twin Cities Orthopedics (TCO) is committed to providing world-class service. TCO’s dedicated teams of independent physicians, specialty providers and care coordinators serve patients in clinic locations, walk-in orthopedic urgent care locations, and numerous other therapy and specialty care settings across Minnesota and western Wisconsin. Regardless of the location, TCO delivers an exceptional patient experience, backed by decades of trusted orthopedic and sports medicine care. TCOmn.com

“TCO has a history of aligning with successful companies, and we are extremely excited to become part of their vibrant and growing organization. We believe you will continue to find your experience at Catalyst/TCO to be outstanding as we exceed your expectations well into the future.” – John Knutson, Catalyst Partner & CEO

To learn more about the integration, click here.


Catalyst Sports Medicine began on January 1st of 2013 when then General Manager John Knutson and Clinic Director J.W. Matheson purchased the business entity from Rich Larsen, who previously owned Larsen Sports Medicine & Physical Therapy. The 7,200-square-foot clinic, located at 2305 Willis Miller Drive in Hudson’s Industrial Park, was quickly becoming too small and congested as services were added and the business grew. Knutson and Matheson always had a goal of transforming the physical therapy clinic into a sports medicine practice. While specializing in physical therapy, athletic training, industrial medicine, orthopaedic massage services and performance training for athletes were added. As all areas of the practice were growing, the need for more space was imminent. Matheson and Knutson purchased the old “Skatery” building on the corner of Hanley & O’Keefe Roads in January of 2015 and began an extensive renovation for the sports medicine practice. On September 1st of 2015, Catalyst opened the doors to the newly renovated 22,000-square-foot facility located on 2.5 acres of land. It included an expanded PT clinic and performance training center and also a new 10,300-square-foot indoor turf training center which sets Catalyst apart from all other therapy clinics and gyms in the region. Today, Catalyst employs 20 people including physical therapists, PTAs, athletic trainers, massage therapists, strength coaches and administrative and customer service personnel.



John Knutson: Owner & CEO

John Knutson received an associate degree in commercial art from Western Wisconsin Technical Institute in 1979. John worked as a graphic designer for two years at Mound Graphic in Elk Mound, WI before buying that business and operating Star Graphics from 1981-1984. After selling Star Graphics, John became the Art Director, Production Manager and Plant Manager of All American Manufacturing of Menomonie, then Boyceville, WI from 1984-1988. In the fall of 1988, John partnered with Eric Strand to start the graphic design and printing firm RPG in Hudson. He managed RPG until 2008 when RPG merged with Digital Dynamics of River Falls and The Resco Company of Hudson. John served as President of RESCO from January of 2008 to August of 2011 when he sold his interest to his business partner. John then started working in the area of business development at LSMPT, a Hudson physical therapy clinic in October, 2011 and was named General Manager in January of 2012. In January of 2013 John and J.W. Matheson purchased the company, and changed the name to Catalyst Sports Medicine. As co-owner and CEO at Catalyst, John oversees and directs business management and operations including strategic planning, finance, HR, marketing and business development. In addition to running the Catalyst Sports Medicine business operations, John is involved in numerous community and civic organizations including the Hudson Area Chamber of Commerce, Hudson Daybreak Rotary, Junior Achievement, United Way, Knights of Columbus, Hudson Community Fund, Big Brothers Big Sisters, Hudson Booster Club and more. John was one of the founders of the Hudson Hot Air Affair, which is still running strong since its inception in 1990. John was one of five individuals who started the Junior Achievement program in Hudson in 1992. John also started the Chamber Manufacturer’s Council in 1992, which is now called the Chamber Manufacturer’s Roundtable. John also coaches the Hudson High School Girl’s (Fall) and Boy’s (Spring) Tennis team. His involvement with local groups and organizations keeps Catalyst Sports Medicine connected to what really matters to people in the Hudson community.

J.W. Matheson, PT, DPT, SCS, CSCS, Board Certified Specialist in Sports & Orthopedic Physical Therapy: Owner & Clinic Director

J.W. Matheson is a 1996 graduate of the Mayo Clinic of Health Sciences and a 2001 graduate of the first public APTA credentialed Sports Physical Therapy residency at Gundersen-Lutheran Sports Medicine in Onalaska, WI. He is both a board certified specialist in sports physical therapy and a board certified specialist in orthopaedic physical therapy. J.W. completed his transitional DPT degree from the Massachusetts General Hospital Institute of Health Professions in 2005. He has also maintained his certification as a strength and conditioning specialist since 2000. Dr. Matheson is a respected author and clinical researcher and has authored and co-authored several peer-reviewed research articles on specific exercises for the spine, knee, and shoulder. J.W. integrates clinical outcomes and functional measurements into his daily clinical practice and is currently working with several partners on different models of reimbursement based on rehabilitation outcomes. He has presented at national conferences on the integration of patient reported and functional outcomes into clinical practice. Dr. Matheson is co-owner and clinic director of Catalyst Sports Medicine. He is an active member of the American Physical Therapy Association (APTA) and serves on several legislative and research committees locally and nationally. J.W. is a strong advocate for science-based medicine and cost-effective solutions to treating common musculoskeletal conditions. He is committed and passionate about doing all he can to help individuals of all ages return to the sports and recreational activities they love.

Scott Peterson, PT, DPT, CSCS, Board Certified Specialist in Orthopedic Physical Therapy

Scott Peterson received his Doctorate of Physical Therapy (DPT) from the University of Wisconsin-Madison in 2010. Prior to his DPT, he earned a B.S. in exercise science: movement science from Winona State University in Winona, MN in 2007. He has been a certified strength and conditioning specialist through the National Strength and Conditioning Association since 2007. Scott is a member of the American Physical Therapy Association and the sports section of the APTA. He enjoys participating in continued education to improve his knowledge and skills as a practitioner to better treat his patients. Scott has been an active athlete throughout his life and played collegiate football while at Winona State. He has a strong interest in sports medicine and the general orthopaedics field of PT. He enjoys spending time with his family and being active indoors and outdoors. Scott uses a variety of treatment techniques, focusing on individualized exercises to obtain optimal results. As a physical therapist, Scott enjoys helping people get back to the things they love to do.

Heidi Schulz, PT, SCS, LAT, Board Certified Specialist in Sports & Orthopedic Physical Therapy

Heidi Schulz received her degrees in athletic training and physical therapy from the University of Wisconsin-Madison. Her high achievements were honored with the Outstanding Student Athletic Trainer Award and a physical therapy student scholarship two years in a row at the University of Wisconsin-Madison. She joined Catalyst Sports Medicine in January, 2007 as a physical therapist and as one of the athletic trainers at Hudson High School. Heidi’s board certification as a specialist in orthopaedic and sports physical therapy pertains to treating a wide variety of conditions, including those involving the spine, hip, knee, ankle, shoulder, and elbow. She specializes in sports medicine and return-to-sports rehabilitation. Heidi has extensive experience in covering athletic events for youth, high school, and Division I college levels. Heidi is a Hudson High School graduate, and she currently resides with her husband and two sons in Hudson, WI. Her love for assisting athletes and patients of all kinds maintain physical health drives her to provide the best quality care.

Robyn Wells-Mangold, PT, DPT, Board Certified Specialist in Orthopedic Physical Therapy

Robyn Wells-Mangold graduated from Northwestern University in Chicago, IL with a Doctorate in Physical Therapy in December 2008. She spent her undergraduate time at the University of Iowa receiving a Bachelors degree in exercise science with a minor in psychology. Robyn has worked as a physical therapist in a variety of settings including transitional, acute, skilled nursing, and outpatient care. She has a passion for treatment of orthopedic injuries and women’s health issues. Her goal is to help people of all ages participate in a healthy and active lifestyle. Click Here to learn more about Women’s Health Services

Carissa Beeksma, PT DPT

Carissa Beeksma received her Doctorate of Physical Therapy (DPT) from Rosalind Franklin University of Medicine and Science in 2018. Prior to her DPT, she earned a B.S. in Biomedical Science from UW-River Falls in 2015. Carissa is a member of the American Physical Therapy Association, and the sports section of the APTA. Carissa has been an active athlete throughout her life with gymnastics and equestrian sports. She participated on the collegiate equestrian team for four years while at UW-River Falls. She has a strong interest in both sports medicine and treating pediatric patients. She enjoys spending time with family and friends, riding her horse and being outdoors with her two dogs. Her goal is to provide an individualized treatment plan to each patient, helping them get back to the activities and sports they love and assist them in leading a healthy, active lifestyle overall.

Luke Wernberg, PT, DPT, Board Certified Specialist in Orthopedic Physical Therapy

Luke Wernberg received his Doctorate of Physical Therapy (DPT) in 2016 from the University of Minnesota. Prior to his DPT, he earned a B.S. in exercise and movement science from UW-Madison. Luke is a member of the American Physical Therapy Association and the American Academy of Sports Physical Therapy within the APTA. He is a board certified orthopedic clinical specialist, a distinction held by only 5% of all physical therapists in the state of Wisconsin. He has experience working with sports medicine and orthopedic populations, endurance athletes, Crossfit and weightlifting athletes, and additional specialization in the management of chronic pain conditions, headaches and temporomandibular joint disorders (TMD). He firmly believes in active based approaches to rehabilitation and strives to build a personalized treatment program to improve patient outcomes. Outside of the clinic, Luke is an avid fly fisherman on the trout streams and lakes of the beautiful Driftless region of Wisconsin and Minnesota.

Shelby Webber, PT, DPT

Shelby Webber received her Doctorate of Physical Therapy (DPT) from St. Catherine University in 2019. Prior to her DPT, she earned a B.S. in Applied Science from UW-Stout in 2015. Shelby is a member of the American Physical Therapy Association. She has a strong interest in general orthopedics and working with patients who enjoy participating in competitive and recreational activities. Shelby enjoys spending time with family and friends, being outdoors, and helping out with home renovation projects. As a physical therapist, Shelby enjoys helping patients recover from their injuries and get back to the activities they love.

Athletic Training

Megan Rinke, M.S. ATC, LAT: Head Athletic Trainer

Megan Rinke graduated from University of Wisconsin- River Falls (UWRF) in the fall of 2012, earning her bachelor’s degree in health and human performance with an emphasis in exercise and sport science and a minor in coaching. While at UWRF, she was a track and field athlete for four years, as well as a work study aide for two years for fall athletes. She later earned her master’s degree in athletic training from The College of Saint Scholastica in spring of 2015. During her time in Duluth she worked with local high school and college teams with a variety of sports the Duluth area, and did her internship at Ralph Lundy Academy summer soccer camps in Arden Hills, NC. After graduate school she began working at the University of Minnesota Crookston. For three years she worked with women’s volleyball, equestrian and men’s baseball teams. She provided strength and conditioning for volleyball and baseball teams and worked on preventative management of shoulder injuries. Megan began working at Catalyst Sports Medicine in the summer of 2018. She is now the head athletic trainer for Catalyst and contracts to Hudson High School’s athletics department. Megan enjoys outdoor activities, hobby farming, and Her passion for physical activity and sports medicine makes her an integral member of the Catalyst team.

Heidi Schulz, PT, OCS, SCS, LAT

See Physical Therapy

Industrial Medicine

JW Matheson, PT, DPT, MS, OCS, SCS, CSCS: Owner & Clinic Director

See Ownership


Jess Williams: Medical Billing Lead

Jess works at Catalyst Sports Medicine as the medical billing lead. She has been employed at Catalyst Sports Medicine since March, 2014. Jess received her associate’s degree in the medical administrative specialist program from Wisconsin Indianhead Technical College in New Richmond, WI in May, 2014. She specializes in insurance claims/denials, credentialing providers, and insurance contracting. Jess resides in Amery, WI with her husband, Eon and enjoys camping, reading, and spending time with her family. Her credentials along with her caring attitude help patients receive the best care.

Career Opportunities

Physical Therapists, PTA’s, Athletic Trainers and Industrial Medicine specialists, Strength & Conditioning specialists and Orthopedic Massage Therapists…please feel free to submit a letter of interest, along with your resume for future employment consideration.

Internship Opportunities

For all Internships, please send a letter of interest, along with your specific commitment or requirements to fulfill your internship obligation to the following personal at Catalyst Sports Medicine for your consideration:

Physical Therapists and PTA’s…contact Scott Peters, DPT at speterson@catalystsportsmedicine.com

Athletic Training & Industrial Medicine Specialists…contact Megan Rinke, M.S. ATC, LAT at mrinke@catalystsportsmedicine.com

Strength & Conditioning and Performance Training…contact Chase Madison, Director of Strength & Conditioning at cmadison@catalystsportsmedicine.com

Orthopedic Massage Therapists…contact Janelle Debold at jdebold@catalystsportsmedicine.com

Or feel free to call any of the supervisors at Catalyst Sports Medicine. The clinic number is 715-386-1155