Orlando, Florida, United States, December 2025 — Fountain Life, a leading healthy longevity brand delivering a next-generation preventive health model through advanced AI diagnostics, restorative therapeutics, and AI-driven health intelligence, has announced the appointment of Dr. Dawn Mussallem, DO, DipABLM, as Chief Medical Officer (CMO).
In her new role, Dr. Dawn Mussallem will help advance Fountain Life’s mission to deliver premium services and treatments designed to optimize health and elevate healthspan through cutting-edge diagnostics, precision prevention, and evidence-based lifestyle and regenerative strategies. She will partner closely with Fountain Life’s clinical and operations teams to refine clinical standards, enhance member outcomes, and accelerate innovation across the company’s preventive and longevity care programs.
Dr. Mussallem is a Mayo Clinic Consultant in Hematology/Oncology and Assistant Professor of Medicine, widely recognized for her work in cancer prevention, integrative oncology, lifestyle medicine, survivorship, and human performance. A double board-certified lifestyle medicine specialist at the Robert and Monica Jacoby Center for Breast Health, she is known for delivering evidence-based, holistic breast cancer care that integrates advanced diagnostics, nutrition, movement, mind-body practices, and conventional therapies to optimize longevity and quality of life.
Commenting on the appointment, Dr. William Kapp, Co-Founder and Chief Executive Officer of Fountain Life, said:
“Dr. Mussallem is the rare physician-leader who brings rigorous science, deep compassion, and firsthand lived experience to the front lines of human optimization. Her track record at Mayo Clinic building innovative programs, shaping medical education, and advancing whole-person care aligns with our commitment to redefining what healthcare can be when prevention and performance are the standard. We’re honored to welcome her as our Chief Medical Officer.”
At Mayo Clinic Florida, Dr. Mussallem founded the Integrative Medicine & Breast Health Program in 2015, creating a patient-centered model supporting individuals during and after cancer diagnosis by transforming lifestyle alongside standard treatment. She also serves as Chair of the Employee Well-Being Committee and Medical Director for the Humanities in Medicine program, leading initiatives that strengthen caregiver resilience, creativity, and meaning in work. Her work further includes championing a regenerative farm initiative connecting sustainable agriculture with clinical, culinary, and community education.
Speaking on her appointment, Dr. Dawn Mussallem, Chief Medical Officer of Fountain Life, said:
“Fountain Life positions us to humanize medicine through a truly next-generation model of care: AI-enabled and data-driven, yet deeply personal, integrating early detection, lifestyle-based disease reversal, regenerative therapies, high-touch physician-led guidance and accountability, and rigorous outcomes-focused research to extend both healthspan and lifespan. As Chief Medical Officer, my mission is to design and operationalize a scalable precision-health ecosystem that makes healthy aging, longevity, and peak existence visible, measurable, and achievable, while igniting the deeply personal purpose behind each person’s efforts so meaningful change becomes sustainable. I am alive now to partner with this pioneering, world-class team to do what no health system has yet dared to do: transform healthcare from reactive to truly preventive, research-informed, and performance-oriented, so that more people around the world can experience the profound sense of aliveness I have been gifted.”
Dr. Mussallem is also a sought-after keynote and motivational speaker, having delivered high-impact talks at the Global Wellness Summit, Mayo Clinic College of Medicine & Science Commencement, White House Correspondents’ events, and the National Academy of Sciences, as well as major global stages surrounding the Super Bowl, Wimbledon, and the US Open. Her work as an author and researcher focuses on whole-food, plant-forward nutrition, lifestyle interventions, disease modulation, survivorship, and healthspan.
Further underscoring the significance of her appointment, Shawn Buchheit, President of Fountain Life, said:
“Dr. Mussallem represents exactly the caliber of medical leadership required to scale a truly prevention-first model of care. Her ability to unite advanced clinical rigor with lifestyle medicine, member experience, and real-world outcomes will be instrumental as we continue to expand Fountain Life and set a new standard for longevity, performance, and proactive healthcare.”
Her professional mission is deeply shaped by her own extraordinary health journey, including a stage IV cancer diagnosis early in her medical training and a life-restoring heart transplant in 2021. In a landmark achievement, she became the first person in the world to run a full marathon one year after a heart transplant.
About Fountain Life
Fountain Life is a leading longevity brand committed to helping people not only live longer but live better. Founded in 2020 by Dr. Peter Diamandis, Tony Robbins, and Dr. William Kapp, the company delivers a next-generation preventive healthcare model integrating AI-guided diagnostics, regenerative medicine, and AI-driven health intelligence to optimize performance and extend healthspan and lifespan. In 2025, Fountain Life was named Longevity Brand of the Year, and its proprietary Zori AI intelligence engine received a Global Tech Award for innovation in AI-powered health intelligence.
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