Dedicated experts with a proven record of success.


Board of directors

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Tyler Schrenk


Tyler is a 33-year-old quadriplegic paralyzed from the neck down as a result of a diving accident in 2012. Along with being the president of the TSF he is on the Washington Assistive Technology Act Program Advisory Council and on the board of Advisors for the Harborview Medical Center Assistive Technology Lab. Tyler is a dedicated expert in the assistive technology field and is leading the way in teaching individuals and companies how to use assistive technologies to create independence. He is also a peer mentor and is dedicated to helping people gain greater independence who are living with disabilities. Tyler enjoys reading, boating, hiking, watching sports and movies.


Michael deHart

Vice President

For more than 25 years, Numotion has been the leading provider of mobility dedicated to providing specialized wheelchairs to both children and adults with disabilities. This unique profession requires an extensive knowledge of physical and cognitive disabilities, product capabilities, reimbursement, service requirements and business insight.

Prior to joining Numotion, Michael spent 22 years in the US Air Force – first in high-tech electronics and computers and finishing with Education / Training in Leadership Theories and Management Skills.

It has been Michael’s good fortune to live all across the US with time in Europe as well.

He is married to 1 wife (Lyssa) with 1 dog, and [never] too many bicycles.

Larry Schrenk


Larry is a combat veteran, retired police officer and business owner. He has experience in managing assets and resources for the disabled. He also has experience handling the finances for a business. Larry just retired from a third career and is am very proud of his son, Tyler, for his desire to help others in their trying times.


León F. Garcia-Martinez, Ph.D.


Leon and his family arrived to Woodinville 17 years ago and made it their home. Leon works as a scientist at a local biopharmaceutical company where he leads teams on the discovery of new therapies for multiple diseases and conditions including migraine, rheumatoid arthritis, and pain among others. He is married and has four children ranging from age 8 to 21. Leon and his family are very involved in multiple charitable and community opportunities through their Church. His life revolves around his Faith, his family and friends, and his work and he enjoys spending time with his wife and children.

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Kent Lindor

Vice President Business Development at Koval Williamson. A third generation Washingtonian. Married father of three. Lives in Woodinville, Washington and former neighbor of Tyler Schrenk. Currently and formerly active in a number of charitable organizations including: Tyler Schrenk Foundation, SPU Athletics, Bethany Adoption Services and Seattle Children’s Hospital thru Friends of Costco Guild.

Enjoys golf, soccer and fly fishing.

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Leslie Fox

Occupational Therapist

Leslie moved to Seattle in 2004 to earn her Masters degree in Occupational Therapy at the University of Washington. The beautiful Pacific Northwest has been “home” ever since. Leslie works at Harborview Medical Center in the neuro-rehabilitation department, serving both inpatient and outpatient clinics over the last 7 years. She is passionate about progressing the field of spinal cord injury rehabilitation and is an active member of the American Spinal Cord Injury Association (ASCIP) and a board member on the Assistive Technology Committee at Harborview. Outside of work, she enjoys travel adventures, hiking, yoga, and spending time with her family & friends.