dоTERRA Scientists


Dr. David Hill, DC

Founding Executive, Chairman of Scientific Operations

For many years, Dr. David Hill has utilized the benefits of essential oils in modern health practices as a physician. He is well-known throughout the world as an expert in essential oils and integrative medicine. Dr. Hill partners with physicians, scientists, and hospitals around the world, defining and establishing the medical integration and use of essential oils in modern health practices for individual use.

He guides advances in essential oil science through a number of top university and research affiliations, providing more in-depth understanding for essential oils and their use. He is a frequent guest on many radio and televisions shows and has authored a number of books and other publications. Dr. Hill’s greatest joy is found in educating and empowering others and his family to take control of their own health.


Cody Beaumont, PhD

Director of Analytical Services and Quality Control

Dr. Beaumont oversees all analytical laboratory testing and Quality Control activities for doTERRA. He has over 12 years of analytical experience including method development, validation, stability programs, testing, and laboratory process improvements. Dr. Beaumont has extensive experience designing and building high quality analytical laboratories and managing day-to-day testing needs. Dr. Beaumont holds a PhD in medicinal chemistry from the University of Michigan-Ann Arbor and holds memberships in American Chemical Society (ACS) and Association of Official Analytical Chemists (AOAC).


Alexandrea Paul, MS

Quality Assurance, Director

Alexandrea Paul obtained her MA and MPhil degrees in ecology and environmental and evolutionary biology from Columbia University, New York with a focus on medicinal plants used in Haiti. She received her undergraduate bachelor's degree in zoology from Brigham Young University and her master's degree in botany on the medicinal uses of citrus from the University of Florida.

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, MS

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, MS

Senior Scientist, Nutraceuticals

Alex DaBell is the principal scientist for development of doTERRA’s nutritional products. He holds a master's degree in Physiology and Developmental Biology from Brigham Young University. With nearly a decade of industry experience, Alex is well qualified to lead the development of some of the highest-quality nutritional products available anywhere. He enjoys learning about new discoveries in nutrition and brainstorming how those discoveries might make their way into new and existing doTERRA products. Alex, his wife, Lisa, and their three children enjoy the outdoors, making beautiful music, and trying out new recipes.


Thao Le, BS

Senior Research and Development Scientist

Thao has a love of science as demonstrated through her work on Personal Care and Household products for over sixteen years. Prior to joining doTERRA in January 2015, she has been instrumental in creating world class products for Arbonne, Nu Skin, Neways, Dr. Perricone, Pfizer, Procyte, Pharmacia Upjohn and many more at Sorenco Laboratories.

Her experience in working as an Analytical Chemist at Weider Nutrition International for over eight years gave her key insights into cosmetic product formulation. She is passionate about making the best product using the most innovative, safe ingredients and enjoys seeing the satisfaction from Wellness Advocates eyes after testing our products. Thao earned a Bachelor of Science in Chemistry from the University of Utah in 1999. She has been a part of the Intermountain West Society of Cosmetic Chemists and served as secretary.


Damian Rodriguez, DHSc

Health and Exercise Scientist

Dr. Damian Rodriguez has spent most of his life researching nutrition, exercise, and the lifestyle behaviors associated with optimal wellness. Prior to joining dōTERRA, he worked in public health and as a strength coach and nutritionist to professional and collegiate athletes. He holds a doctorate degree in Health Sciences from A.T. Still University, where he focused his research on obesity and completed his dissertation examining national trends in obesity comorbidities. He also holds a master’s degree in Exercise Physiology with an emphasis in athletic performance, a bachelor’s in Nutritional Science, as well as numerous professional certifications in exercise and nutrition.

Dr. Rodriguez is a lifelong athlete who has competed in everything from powerlifting to triathlons. Along with his interest in health, he is also passionate about bringing awareness to autism spectrum disorders. Living with Asperger’s Syndrome himself, along with having served as a mentor to autistic teens, Dr. Rodriguez has written and spoken about his experiences being a husband and father with an autism spectrum disorder.


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