dōTERRA’s Scientific Experts


Dr. David Hill, D.C.

Executive Vice President, Chief Medical Officer, Chairman, Scientific Advisory Committee

For many years Dr. David Hill, D.C. has utilized the benefits of essential oils in modern health practices, and as a physician he is a well-known expert in essential oils and integrative medicine. Dr. Hill partners with physicians and hospitals around the world defining and establishing the medical integration and use of essential oils in modern health practices. He fosters education and advances in essential oil science through a number of university and research affiliations providing cutting edge science for essential oil users. He is a frequent guest on many radio and television shows and has authored a number of books and other publications. Dr. Hill stands at the head of a new era dedicated to empowering others to take control of their own health.


Alexandrea Paul

Quality Assurance, Director

Alexandrea Paul obtained her MA and MPhil degrees in ecology, environmental and evolutionary Biology for Columbia University, New York with a focus on medicinal plants used in Haiti. Undergraduate BS degree in zoology from Brigham Young University, Provo, UT; She also has her Masters in Botany on the medicinal uses of Citrus form the University of Florida, Gainesville, FL.

Alexandrea has over 20 years of dietary supplement experience. Her previous experience as the head of quality in a direct selling environment as the quality director at MonaVie and Neways and as the head of quality in manufacturing environment as quality director at NuStar and Kelatron.

Alexandrea’s family is originally from Haiti; she grew up in New York, Port-au-Prince, Haiti, Nassau, Bahamas, Miami, FL and London, UK.


Nicole Stevens, M.S.

Research and Development Scientist

Nicole Stevens has been conducting research with essential oils for more than 15 years. She holds a Bachelor’s degree in Technical Writing and a Master’s degree in Botany and Integrative Biology from Brigham Young University. Nicole has worked in quality control laboratories in the nutraceutical industry as well as academic research laboratories at the University of Utah and the University of Nevada Las Vegas Cancer Research Institute. In addition to research, she has taught courses in chemistry and biochemistry at Brigham Young University – Idaho and University of Nevada Las Vegas. Nicole is dedicated to advancing our understanding of essential oils through research and education.


Alex M. DaBell, M.S.

Senior Scientist, Nutraceuticals


Thao Le

Senior Research and Development Scientist


Damian Rodriguez, DHSc, MS

Health and Exercise Scientist


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