Larsen Sports Medicine is Now Catalyst Sports Medicine

Larsen Sports Medicine has been sold to John Knutson and JW Matheson.

Rich Larsen takes prestigious position with Mayo in Rochester as their new Sports Medicine Rehabilitation Coordinator

Rich Larsen, founder, President and CEO of Larsen Sports Medicine and Physical Therapy and Catalyst, recently accepted an offer from Mayo in Rochester, Minnesota, to become the Sports Medicine Rehabilitation Coordinator.  Rich will start his duties at Mayo at the end of January.  While Rich commutes to begin work there near the end of January, Brenda Larsen will remain at home with the three children while their oldest son Ty finishes grade school.  They will look to list the house for sale and hope to move to the Rochester area sometime before the start of school in the fall of 2013.


G.M., John Knutson, and Clinic Director, JW Matheson, buy the business, which will now be called Catalyst Sports Medicine

One of the conditions of Rich Larsen accepting the new position at Mayo was that he divest himself from the business and sell his practice.  The logical buyers came from within…being local businessman, John Knutson, who was currently serving as the General Manager and LSMPT Clinic Director, JW Matheson.

In taking the Mayo position, Larsen focused on selling his business internally with Matheson and Knutson and a deal was consummated on Monday, December 31st around 5:00p.m.    The new entity will be called Catalyst to try and maintain the consistency and continuity that Larsen has built, which will continue under the ownership and management of Knutson and Matheson.

Knutson says, “We very much appreciate the opportunity presented by Rich Larsen in selling us the business; certainly for the opportunity of ownership in the business, but also because of the fact that we can retain all of our staff and continue on the growth plans that we have been working on as a private independent practice.”

Matheson’s perspective is similar, “Our philosophy of providing a great experience for all our clients as we deliver the highest quality care in an evidence informed practice will continue.  Our entire team here is dedicated to exceeding our client’s expectations…like Rich Larsen has done in the past.   We intend on continue that philosophy well into the future here.”

Our contact information will remain the same for now:

2305 Willis Miller Drive, Hudson, Wisconsin 54016

Phone: 715-386-1155  /  Fax: 715-386-1105

Current Web Sites: www.lsmpt.com and www.catalystathletes.com


  • Our PT’s are the best choice for musculoskeletal aches and pains…even before they become acute injuries!  With the direct access law, you can come and see us first for physical therapy without a doctor’s referral.
  • Our Strength and Conditioning coaches are ready to help you make significant gains to get to that next level.
  • Our Athletic Trainers are continually caring for our local and regional athletes when they need that attention.
  • And our office and administrative staff will always try to exceed your expectations!

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Kevin Nelson January 14, 2013 at 06:10 PM
Congratulations John and JW! Glad to see a successful Hudson business staying local!
John Knutson January 14, 2013 at 06:26 PM
Thanks Kevin! We're happy we can retain the entire staff here as well. It's a great community to run a business in and we're happy to continue our efforts here at Catalyst Sports Medicine. JK
Bruce Hanson January 15, 2013 at 04:43 AM
Congratulations John and JW! What a tremendous asset to our great community. Best wishes to you and best wishes to Rich as he starts on his new path!


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