Integrative Oncologist • Longevity Physician • Cancer Survivor
"My personal journey, from battling stage IV cancer to undergoing a heart transplant, taught me the importance of resilience and integrative health."
Dr. Dawn Mussallem, DO, DipABLM
20+ Years
at Mayo Clinic
About Dr. Dawn
A Physician Who Understands the Journey
Dr. Dawn Mussallem, DO, DipABLM, is a globally recognized physician-leader in lifestyle, integrative, and longevity medicine. She serves as Chief Medical Officer of Fountain Life — named Longevity Clinic of the Year 2025 — and as a Founding Scientific Advisor to IM8 Health, shaping evidence-based protocols and product strategy at the intersection of prevention and performance. Over 20 years as a Mayo Clinic physician, she founded the Mayo Clinic Integrative Breast Oncology Program, integrating lifestyle medicine, integrative symptom management, mind-body therapies, and precision nutrition into cancer care.
Her journey is unlike any other. Diagnosed with stage IV cancer during medical school, Dr. Dawn not only survived but thrived, later undergoing a heart transplant in 2021. Remarkably, she became the first person to run a marathon just one year after a heart transplant, embodying the resilience and hope she brings to her patients every day.
Her mission: to help people not just survive, but truly live.
Credentials & Expertise
World-Class Medical Authority
Mayo Clinic
Integrative Oncologist & Consultant in Hematology/Oncology for 20+ years
Fountain Life
Chief Medical Officer of the "Longevity Clinic of the Year 2025"
Double Board-Certified
Internal Medicine and Lifestyle Medicine (DipABLM)
Marathon Record
First person to run a marathon one year after a heart transplant
As Featured In
My Philosophy
Helping People Thrive, Not Just Survive
"Every day is a gift. My journey has taught me that we have more power over our health than we often realize."
Dr. Dawn's dedication to holistic patient care and innovative, preventative health approaches has transformed the lives of thousands. Her unique perspective as both a physician and patient gives her an authenticity and emotional resonance that inspires people to take charge of their health.