Donnie Yance is a Clinical Master Herbalist and Certified Nutritionist, internationally renowned for his pioneering work in botanical and nutritional medicine, particularly in the field of integrative cancer.
Long considered by colleagues to be the authority in his field, Donnie has authored two definitive books on botanical and herbal medicine: Herbal Medicine, Healing and Cancer (1999) and Adaptogens in Medical Herbalism: Elite Herbs and Natural Compounds for Mastering Stress, Aging and Chronic Illness (2013).

In addition, he has been involved in authoring and co-authoring dozens of articles that have appeared in major industry publications and national journals. Additionally, Donnie gives several lectures each year at major hospitals and conferences across the US for both patients and health care providers, as well as making radio and television appearances.

Donnie is the creator of the Mederi Care model, a highly advanced, unitive approach combining cutting-edge scientific research with ancient healing traditions, and the president and founder of the Mederi Center, a not-for-profit organization dedicated to personalized patient care, professional education, and clinical research in wholistic medicine and integrative oncology. He is also the President and Formulator of Natura Health Products, a line of advanced botanical and nutritional products for healthcare practitioners.

Donnie is a Registered Herbalist (RH), a professional member of the American Herbalists Guild (AHG) and the National Association of Nutrition Professionals, and a professed Secular Franciscan (SFO), which equips him with the breadth and wisdom to touch on the spiritual aspects of healing.

Rooted in decades of intense study, rigorous scientific research, and clinical practice,
Donnie’s life’s work synthesizes his seemingly disparate lifelong passions for the ancient healing traditions of botanical and nutritional medicine, Franciscan theology, and jazz (an accomplished jazz musician, Donnie is affectionately nicknamed the ‘Funk Monk’ by his bandmates) into a powerfully healing, unitive model for healthcare that has transformed thousands of patients’ lives to this day. Tellingly, no less than five books have been published by cancer survivors who credit Donnie’s work for their successful battles against their disease.

LeRoy Mobley is an American singer-songwriter who blends his various talents to inspire audiences around the world. With a passion for storytelling through music, film, and live concerts, LeRoy has captivated hearts with his powerful voice and amazing stage presence.