Scientific and Medical Education Committee

Dr. David K. Hill

Founding Executive

Dr. Hill oversees all science, research, medical, and safety departments at doTERRA. He is known across the world as an expert in essential oils and integrative medicine.

Dr. Hill, a pioneer and leader, has been a pivotal force for bringing essential oils into the mainstream over the past several decades. He partners with international physicians, scientists, and hospitals, defining and establishing the medical integration and use of essential oils in modern health practices. He guides advances in essential oil science at top universities and research affiliations, helping provide more in-depth understanding of essential oils and their uses.

Along with his many accomplishments in essential oil science and research, Dr. Hill is also a beloved educator. At the end of the day, his favorite way to spend his time is at home with his wife, children, and grandchildren.

Dr. Russell Osguthorpe, MD

CMO, (Chief Medical Officer)

Dr. Russell Osguthorpe currently serves as chief medical officer at doTERRA. He’s establishing a network of primary care clinics focused on wellness and prevention through integrative, evidence-based medical practices. He’s also researching the use of essential oils in healthcare settings.

Dr. Osguthorpe received his medical degree from the McGill University School of Medicine, completed his residency at the Children’s Hospital in Denver, Colorado, and pediatric infectious diseases fellowship at Washington University School of Medicine.

Dr. Brannick Riggs, MD

Vice President of Education, Chairman of Scientific and Medical Education Committee

Dr. Brannick Riggs was born in Lafayette, Indiana, but he was raised around the world. He’s a board-certified family practitioner. In 2001, he graduated from the University of Arizona College of Medicine in Tucson, receiving some of his training in complementary and alternative medicine. After graduation, he participated in the McKay-Dee Family Practice Residency program, which brought him and his family to Ogden, Utah.

Dr. Riggs enjoys the full spectrum of family medicine and is a member of the American Academy of Family Physicians. Dr. Riggs served as medical director of his busy practice, as well as for a nursing home and two hospice groups. He was also the northern Utah medical director for Revere Health from 2014 to 2017.

Dr. Riggs has a strong interest in value-based healthcare and is passionate about changing the profession he loves for the betterment of patients and physicians. He was honored to receive the Patients’ Choice Award for seven consecutive years. He’s now chairman of the Scientific and Medical Education Committee and vice president of clinical initiatives for doTERRA.

Dr. Riggs enjoys using essential oils in his home and integrating them into his medical practice to bless the lives of patients. When he’s not working, Dr. Riggs and his wife, Juli, enjoy spending time with their five children out in the Wasatch Front. They garden, tend to their small farm, and love to travel the world together.

Dr. Katherine Igah-Phillips MD, MHA

Integrative Medicine

Dr. Katherine Igah-Phillips—affectionately known as Dr. K—is an award-winning international speaker and holistic humanitarian. She focuses on the power of mental, physical, emotional, and spiritual wellness.

Dr. K uses her private integrative medicine practice to provide her community with holistic, natural, and authentic medicine, delivered by a team of like-minded practitioners. She also offers a virtual mentorship program, where she creates space for personal development and elevation of consciousness. Dr. K maximizes her life’s purpose by providing necessary tools and coaching for people to access genuine wellness, holistic elevation, and a fulfilling reality.

Dr. Jessica Herzog MD, FAAP, ABOIM

General Practice

Dr. Jessica Herzog is a leader and teacher in the field of natural healing. She serves on the medical boards of Synergy Science and Infinity Medica. She’s the founder of Blue Pebble Health, an integrative and functional medicine center with locations in Utah and Pennsylvania. Her mission has always been to help others advance on their wellness journeys by uncovering what’s holding their health back. Her team of natural-minded practitioners specialize in recovery from chronic fatigue, autoimmune conditions, digestive concerns, and hormone imbalances. Dr. Herzog’s health philosophy is simple: optimize mitochondrial or cellular energy and provide foundational nutrients. This approach has worked for optimization, recovery, and prevention.

Dr. Herzog is dual board-certified and completed her undergraduate degree, medical doctorate, and pediatric residency at the University of Maryland. During her studies, she participated in research teams at the National Institutes of Health and the University of Maryland. She started her career as a pediatric hospitalist, serving in Maryland, Utah, and Pennsylvania. For the last 10 years, Dr. Herzog has exclusively worked in natural medicine, acknowledging the power of time-honored herbal and essential oil traditions. She’s also a champion of cutting-edge health technologies, which stimulate cellular energy and pair perfectly with traditional approaches.

Dr. Herzog whole-heartedly practices what she teaches, striving for the optimal balance of physical, mental, emotional, and spiritual wellness. She uses essential oils daily as part of her personal routine, taking them internally (her go-to method), diffusing, and applying topically. She lives in Utah with her family of six children.

Dr. Amy Wolthoff, MD

Dr. Amy Wolthoff grew up in Grapevine, Texas (a suburb of Dallas). In 2009, she received her doctor of medicine degree from the University of Texas Health Science Center in San Antonio. Dr. Wolthoff completed her internship year in internal medicine at Texas Health Resources Presbyterian Hospital in Dallas. She then joined the Department of Dermatology at the Texas Tech Health Science Center in Lubbock, where she received the Resident Leadership Award, which recognizes superior leadership qualities, professionalism, teamwork, and dedication in the residency program. She completed her dermatology board exam and became board-certified in July 2013.

Since starting in private practice in Dallas, Dr. Wolthoff has received many awards from her patients and peers, including “Three Best-Rated Dermatologists in Dallas” in 2016, “Texas Rising Stars” from 2014 to 2017, “Top 10 Doctors” in 2015, “Most Compassionate Doctor” from 2013 to 2017, and “Patient’s Choice Award” from 2013 to 2017.

Dr. Andrew Gough, DO

Dr. Andrew Gough was born and raised in England to parents who both practiced medicine and believed in the effectiveness of alternative medicine. He completed a sports science degree from Chelmsford College before moving to the US, where he studied psychology and chemistry at BYU–Idaho, graduating with honors. Dr. Gough then graduated from the founding school of osteopathic medicine, Andrew Taylor Still University, and completed his residency in emergency medicine at the St. Joseph hospital system in Detroit, Michigan.

Dr. Gough currently practices emergency medicine at Sanford Hospital in Aberdeen, South Dakota. He’s passionate about learning, studying, and educating people about the many health benefits provided by doTERRA essential oils and natural products and is dedicated to sharing how they’ve blessed his family and continue bringing hope and healing to so many people worldwide.

克里斯·斯佩尔曼博士

克里斯·斯佩尔曼博士是新泽西州一家私人诊所的牙医，为病人提供全方位的牙科服务。他于2001年以优异的成绩毕业于马里兰大学。斯佩尔曼博士也是美国综合牙科学院的成员。他潜心研究精油，并把精油用在牙科实践中。他热衷于帮助他的病人和同事了解以健康为基础的生活方式的重要性。

艾希礼·安德森博士，护理师，拥有哲学博士学位

艾希礼·安德森博士于2008年获得路易斯维尔大学护理学理学硕士学位，专攻妇女健康护理师专业；2012年获得健康专业教育证书；2016年获得护理学哲学博士学位，以上均来自路易斯维尔大学。她于2005年在贝里亚学院获得护理学理学学士学位。她曾是贝里亚学院女子篮球队的队长，并创下记录。安德森博士在追求学业的同时，参加选美比赛以争取额外的奖学金机会。她赢得了2013年美国肯塔基州小姐、2010年俄亥俄州黑人小姐的称号，并在2008年选美比赛重返校园47年后，加冕成为第一位路易斯维尔大学小姐。

安德森博士是雅典娜健康与福祉中心（Athena Health and Wellness）的创始人兼首席执行官，这是肯塔基州路易斯维尔市首个同类型的妇女健康诊所。 2020年，她与doTerra合作，开创了一项精油事业，旨在促进西方医学领域的自然健康护理。她是一位计划生育专家、训练有素的研究员、作家、认证健康科学教育家、社区活动家、国际舞台模特、演员、电台主持人和激励演说家。

2016年，安德森博士荣获盖伊·史蒂文森研究生卓越奖（Guy Stevenson Award for Excellence in Graduate Studies），这是路易斯维尔大学授予毕业博士生的最高荣誉。 2014年，她被《魅力》杂志评为肯塔基州年度杰出女性。安德森博士是美国肯塔基州黑人小姐奖学金组织的执行董事，她通过选美活动赋予年轻黑人女性力量，帮助她们培养领导技能、自信心和人际网络，以实现人生最大的目标。艾希礼与她的两个儿子阿特拉斯和艾斯居住在路易斯维尔地区。

珍妮特·罗克博士

珍妮特·罗克博士是一名兽医，也是德克萨斯州奥斯汀市山地移动兽医服务所的拥有者。她在俄亥俄州芬德雷大学获得了生物学、马术研究和兽医学预科三项学士学位，并在上学期间辅修化学。之后，她于2005年毕业于密歇根州立大学的兽医学院。

罗克博士在强压下与自己的身体和情绪斗争无果后，开始使用精油来疗愈自己。在她将精油融入日常生活后的大约6个月，把精油用在了兽医实践中。她现在擅长的领域是将针灸和精油与传统的兽医治疗方式融合在一起。

由于精油改变了她的生活，于是她致力于分享doTERRA精油安全有效地使用方式来治疗动物。

詹妮特·山本博士

詹妮特·山本博士于1997年在俄克拉荷马州立大学荣获了动物科学学士学位，并于2002年在该校获得了兽医学博士学位。毕业后回到加州，詹妮特完成了小型动物就医实习，并在洛杉矶的动物专科和急救中心担任高级急救和重症监护临床医生直到2012年。 2011年，詹妮特建立了Peaceful Pets 安宁宠物居家安乐死服务，以确保她所在地区的狗和猫可以安然地离世。她将她的精力集中在业务上，从而扩大了执业范围，将安宁疗护和临终关怀纳入到服务项目中。詹妮特在2020年10月获得了她的兽医临终关怀和保守疗法证书。

她在2014年12月通过介绍，认识了doTERRA精油，很快她就成为一名健康倡导者，并将精油纳入她的综合医疗和居家安乐死服务。精油真切地改善了她许多病人的生活质量，接而成为她医疗实践中的一个重要部分。

詹妮特居住在南加州的圣克拉里塔山谷。她和她的丈夫杰里米育有两个优秀孩子，分别是艾莉和贾斯汀。他们有一只猫（Boxsie）、一只斗牛犬混种（Bella）、一只约克犬混种（Phoebe）和一只迷你品犬混种（Zero）。

米娅·弗伦佐博士

米娅·弗伦佐博士是一名居住在新泽西州北部的兽医、也是一名妻子和三个孩子的母亲。她对兽医学的热情是由她的叔叔—也是一名兽医—激发并且培养的。米娅从14岁起就跟着她叔叔学习和工作。她于1998年从俄亥俄州立大学兽医学院毕业，并于毕业后回到她的家乡。

她是位一所于新泽西州哈斯布鲁克高地的哈斯布鲁克高地动物医院的拥有者和医疗总监。弗伦佐博士生病的动物们都获益于她所倡导的全面和传统相结合的治疗方法，尤其是doTERRA精油、天然健康和疾病的预防。

弗伦佐博士通过她自己的亲身经历对精油的力量深信不疑。当她的女儿与健康问题作斗争时，她对自己感到越来越沮丧。弗伦佐博士发现doTERRA顺畅呼吸和保卫复方对她女儿的健康非常有益和有效。

弗伦佐博士自豪且自信地与她的家人、朋友和客户谈论天然的doTERRA精油和产品的益处，无论是在美国还是在国外。当她看到生病动物在身体和情绪上都有了显著的改善的时候，她写下了《SpOIL 您的宠物: 猫狗精油的实用指南》这本书。

拉瑞·麦卡斯基尔博士

麦卡斯基尔博士在位于巴吞鲁日郊区的路易斯安那州中部的村庄长大。他在路易斯安那州立大学完成了本科学位。 1970年1月，他被任命为美国空军（USAF）少尉，成为一名战斗机飞行员。他一直服役到1977年8月，之后便进入LSU兽医学院。

在兽医学校期间，他加入了美国空军预备役，以兼职的方式继续他的飞行生涯。麦卡斯基尔博士保持了29年的双重职业—执业兽医和飞行员。他也是一名参加过越南战争和海湾战争的老兵。他于1981年5月从兽医学校毕业，并于同年8月在路易斯安那州的新路开设了麦卡斯基尔兽医医院，这是一家混合动物诊所。

他对兽医针灸和中国传统兽医学（TCVM）的兴趣和研究始于位于佛罗里达州雷迪克的气研究所。他于2009年3月成为CVA，现在是一名经认证的中国传统兽医学执业医师（CTCVMP），这说明他已经获得兽医针灸、中国兽医草药、中国兽医食品疗法和中国兽医推拿（按摩技术）方面的认证。

他将doTERRA精油疗法纳入他对动物的治疗中。他喜欢在世界各地推广中国传统兽医学，并指导正在学习兽医针灸的学生。他也是气研究所的讲师，在中国向学生传授针灸知识。

麦卡斯基尔博士与他的妻子露和他们的黄色拉布拉多犬Cakki居住在路易斯安那州奥斯卡市的福尔河边。他们育有两个孩子，马特和梅根，以及五个孙子/女。他们都是新道路上的圣玛丽天主教堂的积极成员。他的爱好是锻炼身体、与Cakki一起打鸽子和鸭子。

贾妮思·费舍博士

贾妮思·费舍博士毕业于加拿大爱德华王子岛的大西洋兽医学院。在她职业生涯的初期，她意识到健康也许可以通过一种更全面的方法来获得。 2005年，她通过国际兽医针灸协会成为一名合格的兽医针灸师。从那时起，她就融合了针灸和传统的中医草药治疗。

她也是一名经认证的犬类康复治疗师和动物脊椎按摩师。

她对天然解决方案的渴望使她找到了doTERRA精油。在目睹了精油在家中的实际疗效后，贾妮思决定将精油融入到她的兽医康复实践中。到现在为止，她的办公室每天都有doTERRA精油的扩香，她也喜欢与同事分享精油对动物病症的益处。