Catalyst Project

Catalyst Project

Facilitating wheelchair services through faith-based hospitals in low-resource countries.

Karen Rispin

Karen RispinAt LeTourneau University, Karen led the Wheels research project that developed and validated a set of research tools to determine how well wheelchairs work in low-resource settings. Because of this research, Karen was invited to international committees and became familiar with resources and training for appropriate assistive technology provision. Karen grew up in Kenya and is familiar with networks of mission hospitals. Karen and Phil started the Assistive Technology Catalyst Project. Phil’s skill as a videographer and photographer has been a key part of this endeavor.

Support Karen


Jonathan Biggers

Jonathan BiggersJonathan is in the process of re-certifying for his Assistive Technology Professional certification. Currently he and Kristi, who is a nurse, are primarily focused on strengthening local outreach to those with disabilities in Guatemala through Mission Impact and BeeLine wheelchair manufacturing and provision. He and Kristi are also working with the team to strengthen wheelchair provision and spiritual care for those with disabilities through mission hospitals in Africa.

Support Jonathan


  • Jonathan's Goal

Joshua C Smith

Joshua C SmithJosh operates at the intersection of business, technology, and ministry. Josh has operated a manufacturing business, developed popular fundraising software, and served since 2012 with Tying Vines, a Christian nonprofit bringing hope to disadvantaged or impoverished communities. Josh joined the Catalyst team and started Invigorate Inc., to serve as the business layer and operating entity for the group. Invigorate will build and operate manufacturing facilities to build wheelchairs and other assistive technology devices.

To learn more about Invigorate or to support Invigorate or donate wheelchairs directly, please visit: www.nvgrt.org.

Josh is currently raising personal support to be able to focus on Invigorate. Donations are processed by Tying Vines and are tax deductible. Thanks for your support!

Support Josh Video: Josh's Plan


Dr. Jessica Tsotsoros playing with a childJessica Tsotsoros, PhD OTR/L, is an Assistant Professor in the Rehabilitation Sciences Department in the College of Allied Health at the University of Oklahoma Health Sciences Center, where she teaches Occupational and Physical Therapy students and is the International Experience Coordinator. She has practiced as an occupational therapist for twenty years in early intervention, school systems, assistive technology, wellness, and mental health. Jessica Tsotsoros has studied power mobility with young children, educational technology, models of self-determination, and created a wellness intervention called IHOPE (Integrating Healthy Habits Optimized by Community Participation & Engaged Learning) for adults with severe mental illnesses. Most recently, Dr. Tsotsoros is conducting research in low-resource countries on appropriate wheelchair provision using evidence-based assessment tools created by Karen Rispin. Dr. Tsotsoros is excited to be a part of the Catalyst vision and help with outcome measurements through the Wheels Project to support the effectiveness of wheelchair provision internationally. Dr. Tsotsoros is a board member of Teaching Others and Reaching Nations (TORN) who also helps to support her service trips. If you would like to help support the research and service, please click here for a tax-deductible donation and type “Wheels Project” in the "Donation Note" box.

Support Dr. Jessica  Video: Wheels Project: Kenya


Luke McAuley

Luke McAuley and a baby

Luke is an Occupational Therapist working with SIM and seconded to BethanyKids in Kenya. Luke and his family of 5 live in Kijabe where he is the Rehab Training Program Director for BethanyKids Kenya. He has spent over a decade working with children in under served areas both in the US as well as in Kenya. Luke has a passion for working with children with disabilities and their families, especially from the perspective of treatment using Occupational Therapy and Assistive Technology. Luke with boy in a wheelchairLuke also has a passion for training others and is working on developing several training programs.

If you would like to see more about the McAuley's or are able to support them either thru financial or prayer support we would love to hear from you. You can visit their blog McAuleys to Kenya, or contact them at This email address is being protected from spambots. You need JavaScript enabled to view it. or This email address is being protected from spambots. You need JavaScript enabled to view it.


Larry Raymond

Larry Raymond

Larry Raymond, DPT, MBA, CWS, directs Rehabilitation, Wound Care, Diabetes Management, and Breast Cancer Care in the Johns Hopkins Health System, but his heart is in the underserved communities of the world. Unity in the body of Christ and caring people into the body of Christ is his focus. Larry uses the clinical and administrative gifts God has given him to provide wound care, educate on rehabilitation and wound topics, encourage, empower and struggle towards a model of healthcare based on the fact that every person bears the image of God. “When Jesus stepped ashore and saw a large crowd, He had compassion on them, because they were like sheep without a shepherd.” Mark 6:34.

To this end, Larry has volunteered with Joni and Friends Wheels for the World, for over 10 years including the distribution of the 100,000th wheelchair, with Samaritan’s Purse since 2017 in the Disaster Assistance Response Team (DART), and with Christian Appalachian Project since 2018. As a wound specialist, Larry provides care and education about chronic disease and the associated complications from the use of assistive technologies like pressure injuries. After completing an excellent Christ-centered MBA at Asbury University with a focus on non-profit management, Larry is excited to build bridges with mission hospitals, witnessing how caring for the disabled crosses all language and cultural boundaries and prepares hearts to join the body of Christ.


Ryan Propst

Ryan Propst

Ryan is a Certified Prosthetist Orthotist working out of Texas. Having grown up in Kenya, Ryan has an ingrained passion to serve in different cultures. Ryan is involved in prosthetic work in Zambia, and has also worked at Gillette Children's Specialty Healthcare as a custom seating practitioner serving adults with complex wheelchair seating needs. "I'm excited to work with the Catalyst Project to consult and collaborate for sustainable solutions. I believe that providing people with a prosthesis, orthosis, or functional seating is a practical way to empower people by restoring mobility, opportunity, and dignity."