Myron Wentz, Ph.D.

Founder and Chairman Emeritus

Dr. Myron Wentz is an internationally recognized microbiologist, immunologist, and pioneer in the development of human cell culture technology and infectious disease diagnoses. In 1992 Dr. Wentz founded USANA Health Sciences, a state-of-the-art manufacturer of nutritional supplements, foods, and personal-care products.

Kevin G. Guest

Executive Chairman of the Board

Kevin Guest joined USANA on a part-time basis in April 2003, as Executive Director of Media and Events. Following our acquisition of the media, video, and event-productions company, FMG Productions founded by Mr. Guest, he became a full-time employee of the Company and he was promoted to Vice President of Media and Events in February 2004. In January 2006, he was appointed Executive Vice President of Marketing and served in that role until July 2008, when he was appointed Chief Marketing Officer. Mr. Guest served in this role until May 2011, when he was appointed President of North America. In October 2012, he was appointed President of the Americas, Europe and South Pacific. In August 2014, Mr. Guest was appointed President of USANA and served in this role until August 2015, when he was appointed Co-Chief Executive Officer. He served in this role until November 2016 when he was appointed Chief Executive Officer. In July 2023, Mr. Guest transitioned to the role of Executive Chairman of the Board. Mr. Guest earned a B.A. in Communications from Brigham Young University.

Xia Ding


Ms. Ding is currently the Managing Director of Greater China at Sephora. She joined Sephora in 2024 where she leads Sephora's business in Mainland China and Hong Kong SAR that spans around 350 stores, two e-commerce websites, and a robust ecosystem of digital platforms and apps. Prior to joining Sephora, Ms. Ding worked at Nike from 2019 to 2024 as the Vice President of e-commerce Asia Pacific and Latin America, where she was accountable for driving the Nike digital business in Asia Pacific and Latin America markets. Prior to Nike, Ms. Ding worked for in China from 2017 to 2019 as the President of JD Fashion where she was responsible for driving the fashion business covering apparel, shoes, sportswear, bags, jewelry, watches and accessories. She was also instrumental in leading’s M&A investment strategy to fuel strategic growth. Prior to joining, Ms. Ding served as Vice President of Retail Service at Nielsen in China from 2015 to 2017 where she was responsible for overseeing Nielsen’s retail services business. Ms. Ding started her career in 1995 with Hanesbrands, Inc., where she spent the first ten years in the U.S. headquarters in various finance and corporate development roles. In 2005, Hanesbrands appointed her as the VP/General Manager of China where she brought American lingerie brand Hanes and casualwear brand Champion into the China market.

Ms. Ding is a well-regarded e-commerce and digital leader and was recognized as Forbes 2018 TOP 100 Most Successful Businesswomen in China and Forbes 2017 TOP 10 Most Influential People in China Fashion Industry. Ms. Ding received a Bachelor of Chemistry degree from the Nanjing University of China. She also earned an M.B.A from the Wake Forest University in Winston-Salem, North Carolina USA.

John T. Fleming


Mr. Fleming is a student, researcher and advocate of the direct selling channel of distribution. His many years of involvement with the direct selling business model has been through actual involvement as an independent contractor, owner of a direct selling company, officer of one of the world’s largest direct selling companies, and Publisher/Editor-in-Chief of the most notable trade publication concerning direct sales. Since 2006, he has served as founder and CEO of Ideas and Design Group, a consulting firm that services business models that utilize independent contractors to market products and services. From 2006-2015, Mr. Fleming served as Publisher and Editor-in-Chief of Direct Selling News, the most notable trade publication for executives and companies that utilize the direct selling channel of distribution. Prior to that, Mr. Fleming held a variety of executive positions with Avon, one of the largest direct selling companies in the world.

Gilbert A. Fuller


Gilbert A. Fuller has served as a director of USANA since September 2008. Prior to that, he served as our Executive Vice President, Chief Financial Officer, and Secretary since January 2006. Mr. Fuller joined USANA in May 1996, as the Vice President of Finance and served in this role until June 1999, when he was appointed as the Company's Senior Vice President. Before joining USANA, Mr. Fuller served in various executive positions for several companies. Mr. Fuller served as Chief Administrative Officer and Treasurer of Melaleuca, Inc., a manufacturer, and direct seller of personal care products. He was also the Vice President and Treasurer of Norton Company, a multinational manufacturer of ceramics and abrasives. He obtained his certified public accountant license in 1970 and kept it current until his career path developed into corporate finance. Mr. Fuller received a B.S. in Accounting and an M.B.A. from the University of Utah. In December 2012, Mr. Fuller was appointed as a director of Security National Financial Corporation, a NASDAQ-listed company.

J. Scott Nixon, CPA


Mr. Nixon, a retired certified public accountant, previously served as an independent director on USANA’s Board from October 2017 through May 2019, before departing from the Board to fulfill a three-year voluntary leadership assignment for The Church of Jesus Christ of Latter-day Saints in Brazil. Mr. Nixon retired in 2015 as a partner with PricewaterhouseCoopers LLP (“PwC”) where he spent over 31 years in various roles including office managing partner and engagement partner over public and private companies in many industries. His career involved providing audit and business advisory services. Mr. Nixon was involved in numerous complex filings with the Securities and Exchange Commission on behalf of his clients. In 2007, Mr. Nixon returned from a four-year assignment in São Paulo, Brazil where he represented various interests of the PwC global firm to the 18 member firms in South and Central America and led the implementation of the Sarbanes-Oxley requirements in those countries.

Mr. Nixon previously served on several boards of directors, including: (i) ProLung, Inc. (dba IONIQ Sciences), where he served as Chairman of the Audit Committee and a member of the Compensation Committee; (ii) Deseret Trust Company, where he also served as a member of the Audit and Executive Committees; (iii) Utah State University Board of Trustees, where he also served as Chairman of the Audit Committee; and (iv) two other nonprofit boards of directors. Mr. Nixon holds both a Bachelor of Arts and Master of Accounting from Utah State University.

Peggie Pelosi


Ms. Pelosi is a corporate social responsibility/sustainability practitioner. Since 2005, Ms. Pelosi has been the Founding Partner and Strategic Advisor at Orenda Connections, a corporate social responsibility consultancy in Toronto, Ontario, Canada. She served as an Instructor in the Certificate Program in Corporate Social Responsibility at the University of St. Michael's College in the University of Toronto, and a part-time Professor in Sustainable Business Management Post Graduate Studies at Seneca College, Faculty of Business in Toronto. Since 2015, she has also served as the Executive Director of Innovators Alliance, a network of CEOs focused on sustainable and profitable growth through innovation. Prior to her career and academic work in corporate social responsibility and sustainability, Ms. Pelosi served as a member of the Company’s management team, first as Executive Director of Sales for Canada and then as Vice President of Network Development. She worked for the Company until 2004. While at the Company, Ms. Pelosi began the program that would evolve into the USANA True Health Foundation, and this led to her interest in corporate social responsibility. Prior to her roles at the Company, Ms. Pelosi had 15 years of direct selling leadership experience. Ms. Pelosi has also previously served on the Board of Directors on a number of non-profit organizations including the Children’s Hunger Fund and Big Brothers Big Sisters of Toronto. She is a graduate of the Corporate Social Responsibility & Sustainability Program at St. Michael’s College at the University of Toronto, and has completed the NACD Directorship Certification and the ESG Competent Boards Director Certification (GCB.D).

Frederic J. Winssinger


Frederic J. Winssinger became a director in May 2016. Mr. Winssinger has been a Managing Partner of RW Partners LLC (RWP) since 2006. RWP is a commercial real estate private equity investment company based in Phoenix, Arizona. Mr. Winssinger also oversees his family's general investment operations and in 2014, he co-founded PlanninCore Wealth Advisors to provide investment advice to individuals and families. Prior to 2006, Mr. Winssinger worked in strategy consulting for the Boston Consulting Group and as a Portfolio Manager/Financial Analyst for JP Morgan Asset Management and other privately held asset management companies. Mr. Winssinger received a B.A. in Mathematics and Economics from Claremont McKenna College and an M.B.A from The Wharton School of the University of Pennsylvania.

Timothy Wood, Ph.D.


Timothy E. Wood, Ph.D., previously served as Executive Vice President of Research and Development for USANA until his retirement in March of 2011. Dr. Wood joined USANA in June 1996 as Director of Research and Development, and served in this role until June 1999, when he was appointed as the Company’s Vice President of Research and Development. In January 2006, he was appointed as the Company’s Executive Vice President of Research and Development.

Before joining USANA, Dr. Wood served as Vice President of Research and Development for AgriDyne Technologies, Inc., formerly known as NPI, from 1992 to 1995. From 1980 to 1992, Dr. Wood served as Research Manager and Senior Scientist for AgriDyne Technologies.

Dr. Wood received a Bachelor’s Degree from the University of California, Santa Barbara, as well as a Master’s Degree and a Ph.D. from Yale University. He also earned an M.B.A. from Westminster College in Salt Lake City, Utah.