Steve Mister, Esq.
President & CEO

Mr. Mister has been President and CEO of CRN since 2005. Under his leadership, CRN has experienced a refined strategic focus, increased membership, and launched new initiatives to enhance consumer confidence in the supplement industry.  In addition to his role as President & CEO of CRN, he is also the Executive Director for the CRN Foundation.  Immediately prior to joining CRN, he was director of government affairs at the National Association of Professional Employer Organizations (NAPEO) where he developed and implemented a state government relations program tracking and responding to legislation in all 50 states. Before that, Mr. Mister served in several legal and legislative roles for over a decade at the Consumer Healthcare Products Association (CHPA), most recently as vice president and associate general counsel. He also worked as an attorney in the Washington, D.C. law firm of Wiley, Rein & Fielding in general litigation, government ethics, and federal election law practice groups, and had a stint on Capitol Hill as a media relations assistant for former U.S. Senator Charles McC. Mathias, Jr. Mr. Mister holds a law degree from the College of William and Mary, an M.A. in Political Communication from the University of Maryland, and a B.S. from Towson University in Maryland.

Judy Blatman
Senior Vice President, Communications

Ms. Blatman has over 20 years experience in the communications field, including expertise in issues management, lifestyle consumer marketing, crisis communications and development and execution of results-oriented publicity campaigns. She has worked in the consumer/health group of a large international public relations agency (Manning, Selvage & Lee), led public relations efforts for a luxury resort company (Princess Hotels International, Inc.), and managed communications efforts for an alcohol industry trade association (Distilled Spirits Council). At CRN, she is responsible for overseeing the development and execution of the association’s overall strategic communications efforts, and manages the Life…supplemented consumer wellness initiative.  Ms. Blatman serves on the CRN Foundation Board.  She has a B.A. in English from the University at Albany (SUNY), New York.   

John Hathcock, Ph.D.
Senior Vice President, Scientific & International Affairs

Dr. Hathcock is responsible for scientific review and regulatory interpretation, specializing in safety and international issues. He has decades of experience in the field, having served as a professor at Iowa State University and a senior scientist at the Food and Drug Administration before joining CRN in 1995. An expert on the safety evaluation of nutrients and other dietary ingredients, he has made numerous presentations on the safety of vitamins and minerals and other dietary ingredients to the U.S. Food and Nutrition Board and is the author of CRN's Vitamin and Mineral Safety (1997 and 2004). In addition to publishing numerous peer-reviewed scientific articles, he regularly presents at major national and international conferences on food safety and regulatory issues, analyzes and develops CRN policy positions, and speaks on international regulations and issues, including those pertaining to the Codex Alimentarius, the European Commission, and the ASEAN health supplements harmonization of maximum levels. He has been appointed by the government of Singapore to membership in an external advisory committee on supplements. Dr. Hathcock holds B.S. and M.S. degrees from North Carolina State University and a Ph.D. in Nutrition from Cornell University and is an elected member of professional societies in nutrition and toxicology.

Andrew Shao, Ph.D.
Senior Vice President, Scientific & Regulatory Affairs

Dr. Shao has an extensive background in human nutrition research and expertise in nutrition policy, and dietary supplement regulatory affairs and product development. Prior to joining CRN, Dr. Shao worked in Scientific Affairs for General Nutrition Corp. (GNC) in Pittsburgh, Pennsylvania and prior to that in Research and Development for Kemin Health (formerly Kemin Foods) in Des Moines, Iowa. He has authored or co-authored more than 30 peer-reviewed papers, abstracts, trade journal articles and industry position papers.  He holds a Ph.D. in Nutritional Biochemistry and an M.S. in Human Nutrition Science from Tufts University, and a B.A. in Biology from Brandeis University.  Dr. Shao is a member of the American Society for Nutrition, the American College of Nutrition, the Institute of Food Technologists and the National Strength and Conditioning Association.

Mike Greene
Vice President, Government Relations

Mr. Greene has 20 years of experience working in government relations, public policy, political campaigns and communications. He oversees the association’s federal and state legislative strategy, and is Treasurer of CRN’s Political Action Committee (CRN PAC).  Prior to joining CRN, Mr. Greene served as communication director for U.S. Rep. John D. Dingell of Michigan, worked on the Subcommittee on Disability Policy for Sen. Tom Harkin of Iowa, and began his career in television at WPLG-TV, the ABC affiliate in Miami. He received his B.A. in International Relations and Political Geography from Florida State University.

Duffy MacKay, N.D.
Vice President, Scientific & Regulatory Affairs

Dr. MacKay is a licensed Naturopathic Doctor and was a co-owner and practitioner in a family-owned New Hampshire complementary and alternative medicine private practice for seven years. In addition to his hands-on experience as a practitioner in the field of integrative medicine, he spent eight years working as a medical consultant for two companies in the dietary supplement industry, including four years as an executive with Nordic Naturals, where he was in charge of clinical research. He previously served as Technical Advisor for Thorne Research. Dr. MacKay has published articles in peer-reviewed journals, and serves on the Editorial Board of two peer-reviewed publications: the clinical journal Alternative Medicine Review and the official publication of the American Association of Naturopathic Physicians, Natural Medicine Journal.  Dr. MacKay earned his B.S. in Marine Sciences from the University of California, Santa Cruz and his N.D. from the National College of Naturopathic Medicine in Portland, Oregon. Dr. MacKay is licensed in the state of New Hampshire.

Erin Hlasney
Senior Director, Media Relations

Prior to joining CRN, Ms. Hlasney worked in the consumer practice group at two large public relations agencies—Manning, Selvage & Lee in New York City and Tierney Communications in Philadelphia.  She has worked in the public relations industry for seven years.  At CRN, she is a strong resource for print, broadcast and on-line journalists, including health, lifestyle, business and other reporters.  In addition, she manages CRN’s consumer research projects, including the association’s annual Consumer Survey on Dietary Supplements. She received her B.A. in Communications from Monmouth University of Long Branch, New Jersey.

Season Solorio
Senior Director, Public Relations

With seven years of experience working in the food, nutrition and health industries, Ms. Solorio has an expertise in distilling complicated scientific issues into practical information that consumers can apply to their own lives. Prior to joining CRN, Ms. Solorio worked in the Food/Nutrition Washington, D.C.-based practice group at Porter Novelli, an international public relations agency. At CRN, she works closely with the media and CRN’s scientists to respond to scientific studies. She is also involved in CRN’s social media strategies and helps the association build partnerships and outreach to healthcare professionals. Ms. Solorio holds a B.S. in Mass Communications from Miami University in Ohio.

Ingrid Lebert
Director, Government Relations

Ms. Lebert manages legislative activity for CRN, presenting association and industry positions to congressional offices.  In addition, she monitors federal and state legislative and regulatory activity and is responsible for coordinating CRN’s annual legislative day on Capitol Hill.  Prior to joining CRN, she worked in the Intellectual Property division of the international law firm McKenna, Long & Aldridge, and at the legislative consulting company Klein & Saks.  Ms. Lebert earned her B.S. in psychology at South Dakota State University.

Kate Murphy
Manager, Communications

Ms. Murphy works in the communications department and assists with the execution of the association's overall communications efforts.  Prior to joining CRN, she held an internship at WSLS-TV in Roanoke, Virginia, and was an active member of the Public Relations Student Society of America. Ms. Murphy graduated from Virginia Polytechnic Institute and State University where she received her B.A. in Communications.

Darryl Vann
Manager, Accounting & Finance

Mr. Vann has nearly 15 years of experience in accounting and finance. He comes to CRN from Howard University Hospital in Washington, D.C. where he was the manager of support services. Prior to his work there, he served as a staff and senior accountant at several companies and established his own account services firm in 1996, which he still operates part-time. He received his B.S. in accounting from Alabama State University.

Haiuyen Nguyen
Research and Administrative Assistant

Ms. Nguyen provides research assistance and administrative support to the scientists at CRN. She is involved in department projects including production of CRN’s Research Watch, a service for association members, and serves as a main contact and resource for CRN Regulatory Affairs Committee and Senior Scientific Advisory Council members.  She served as a research intern at FDA's Center for Food Safety and Nutrition (CFSAN) prior to joining CRN. Ms. Nguyen received her B.S. in Cell, Molecular Biology and Genetics from the University of Maryland, College Park.

Joyce Nyero
Member Services Coordinator

Ms. Nyero is responsible for coordinating member recruitment and retention in addition to maintaining the association’s database and assisting in various activities related to the annual conference. She has over 15 years of administrative experience having worked at a university, for an association and in the hospitality industry.

Gerry Satterfield
Executive Assistant to the President & CEO

Ms. Satterfield is responsible for keeping official corporate records, coordinating communication between the president and member companies, and performing administrative functions. She has over twenty years of experience ranging from research and writing to executive assistant positions for multiple companies, most recently including Ritz Camera Centers, Inc. She received her B.A. in Political Science from St. Olaf College in Minnesota.