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Our Care Team

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Donnie Yance, CN, RH (AHG)

Donnie Yance, CN, RH (AHG)

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Donnie Yance is a Clinical Master Herbalist and Certified Nutritionist renowned for his extraordinary knowledge of the healing properties of plants and nutrition, and for his distinguished ability to integrate this wisdom with modern scientific disciplines. His work is informed by a deep understanding of epigenetics, laboratory medicine, oncologic pathology, and molecular oncology—allowing him to bridge traditional botanical medicine with contemporary biomedical science in a unified clinical framework.

A professional member of the American Herbalists Guild and the National Association of Nutrition Professionals, Donnie lectures nationally and internationally on a wide range of health topics, including botanical medicine, clinical nutrition, whole-systems healing, chronic and complex illness, and integrative oncology. He is the Founder of the Mederi Center, a nonprofit organization dedicated to patient care, professional education, and clinical research in unitive medicine and integrative oncology. He is also the Founder, President, and Formulator of Natura Health Products, a professional line of botanical and nutritional formulations.

Donnie maintains his clinical practice at the Mederi Center in Ashland, Oregon, where he sees clients both in person and via telemedicine, applying his integrative care model, Mederi Care—a whole-systems approach he developed over more than thirty years of clinical experience. As a mentor, teacher, author, and healer, Donnie’s work has influenced thousands of lives and is taught to healthcare practitioners worldwide through the Mederi Academy, an online professional training program focused on whole-systems medicine, integrative oncology principles, clinical applications, and therapeutics.

Donnie is the author of Herbal Medicine, Healing and Cancer and Adaptogens in Medical Herbalism: Elite Herbs and Natural Compounds for Mastering Stress, Aging, and Chronic Disease. He publishes a weekly blog at donnieyance.com, where he shares insights on healing, research, and the evolving landscape of integrative medicine.


Watch this short video with our founder Donnie Yance to learn more about how Mederi Care® is changing lives with its integrative approach to cancer care and health optimization.

“It has been my privilege to accompany thousands of patients on their healing journeys. Because each person is a unique individual, there is clearly no “one-size-fits-all” approach that is appropriate. I have humbly learned the importance of embracing the mystery in healing while utilizing the best of scientific evidence-based medicine. From this vantage point, I developed the Mederi Care model, which is rooted in the American Eclectic herbal tradition, constitutional energetics, and contemporary clinical nutrition. At the same time, I am a disciplined and voracious scientific and medical researcher. This synthesis provides a framework for developing novel therapeutic strategies that incorporate the best of traditional, wholistic, and conventional medicines as supported by modern science. My goal is to provide patients with treatment options that include health-building as well as disease-fighting tools. I want my patients to thrive, not merely survive. Mederi Care is truly integrative in its wholism. My hope is that the fruition of Mederi Care will be the future of modern medicine, removing ego and fear in favor of compassion, humility, wisdom, and love.” Donnie Yance, CN, RH (AHG)

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