
The Team
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Chris Mueller
Board Member
Dr. Chris Mueller is the founding chair of Active with MS. As a practicing Cardiologist, Chris is passionate about helping his patients improve their healthy longevity. When his wife, Betsy, was diagnosed with MS, Chris witnessed firsthand how trans-formative regular exercise was to her well-being and resilience. Inspired by his wife’s commitment as she set out to become the first person with MS to run across the United States, Chris became deeply invested in sharing her message about the power of physical activity with others facing similar challenges. Together, Chris and Betsy launched Active with MS to provide support, resources, and encouragement to the MS community, believing that exercise can be a vital pathway to improved health and a stronger sense of community for those living with MS
Lauren Clement
Board Member
Dr. Lauren Clement is a veterinarian who specializes in end-of-life care for pets and their families. Upon moving to Flagstaff in 2023, Lauren started her own veterinary business to provide quality, in-home end-of-life services to the communities of Northern Arizona. Lauren is also a certified running coach with a deep appreciation for the positive influence physical activity can have in people’s lives. Having connected with Betsy through running, Lauren has seen and been inspired by how powerful this impact has been in not only Betsy’s life but in the lives of those touched by Betsy’s story as well. Honored to be involved with Active with MS, Lauren believes that fostering a community focused on the value of physical activity will enrich the lives of those living with MS.


Liz Lorenz
Board Member
Ms. Elizabeth (Liz) Lorenz is an attorney who has spent the majority of her career as a health care policy professional, first working on Medicare and mental health policy on Capitol Hill and then in various positions representing underserved populations and health care providers in Arizona. Liz has also served as President and Chief Executive Officer of an education 501(c)(3) non-profit organization and spends a significant amount of her free time volunteering. When Betsy moved to Arizona, Betsy and Liz bonded over a love of Flagstaff life and mothering tween girls who are also close friends. Most of all, Betsy and Liz support each other with managing their health conditions, through laughs and tears and everything in between. Liz is very excited to see Betsy begin her incredible personal journey and raise awareness and help others with MS.
Betsy Mueller
Executive Director
Following her diagnosis with Multiple Sclerosis in August 2021, Betsy set her sights on a personal goal to run across the United States in Spring 2025. As she trained for this amazing adventure she started to realize that it was becoming larger than a personal goal. Fueled by her ability to establish connections with others and inspired by her own experience on the transformative power of exercise, she and her husband Chris created Active with MS Foundation as a way to continue to positively impact the lives of persons with Multiple Sclerosis.
