Executive Leadership Team

The Executive Leadership Team translates strategy and policy into outcomes-based plans, in collaboration with the Board of Directors, ultimately advancing DIA’s impact across the globe.

Barbara Lopez Kunz

Global Chief Executive

Send Email

Barbara Lopez Kunz serves as President and Global Chief Executive of DIA, driving thought leadership and innovation in therapeutic development to improve the health of people worldwide. She previously served as President of Health and Life Sciences at Battelle, one of the world’s largest, most respected R&D organizations. She has also served as Senior Vice President/General Manager for Thermo Fisher Scientific’s Biosciences Division, as SVP for DuPont, and head of R&D for ICI. A dedicated volunteer for children's health, Barbara chairs the board of Children's National Research Institute, serves as advisor to the UC I4H Fellowship, and as Director for Aptevo Therapeutics.

Vivianna Guzman

Chief Financial Officer

Send Email

Vivianna Guzman previously served as CFO for New York Public Radio (NYPR), where she led the financial strategic planning and day-to-day operation. Prior to joining NYPR, Guzman was the CFO and, concurrently, the Head of Global Businesses for the American Management Association (AMA), a global leader in the Human Capital Development industry. Guzman spent nearly 10 years in the First City Financial Corp Ltd. with holdings in financial institutions, arbitrage, private equity, real estate, telecom, manufacturing, and chemicals. As a CPA with KPMG for over six years, she served multinational audit clients in the US and Latin America. Guzman holds a Master’s degree and a BS in Business Administration from the Universidad de Costa Rica.

Timothy Hess

Vice President of IT

Send Email

Timothy Hess serves as Vice President of IT, responsible for DIA’s global IT operations, computer infrastructure, customer and membership management databases, and website. He previously served as Director of Business Technology for Thomas Publishing Company LLC, where he managed all internal business systems, production systems, and technology projects; and as Vice President &Chief Technology Officer for Content Data Solutions, Inc., and as R&D Director for Reed Technology & Information Services. A proven technology thought leader with extensive experience in delivering high-performance systems that solve complex business problems in all development environments, Mr. Hess earned his computer science degree from Arcadia University.

Ania Mitan

Senior Vice President & Managing Director, DIA EMEA, India and Singapore

Send Email

Ania Mitan serves as the Senior Vice President & Managing Director, DIA EMEA, India and Singapore. She is former Executive Director of the commercial organization at Celgene, where she built the oncology business in the EMEA region with healthcare partners to shape quality delivery systems and new commercialization models in personalized medicine, specifically with novel cell and gene therapies. She began her career at Eli Lilly and Company, serving as Head of Commercial Development for EU mid-size countries, Head of Primary Care Business Unit for the UK and Ireland, and Head of Marketing for the Critical Care Unit. Ania earned her MBA from Simmons College and MSc in Pharmacy from Silesian Medical Academy (Poland).

Hajime Saijo

Senior Vice President & Managing Director, DIA Japan

Send Email

Hajime “Jim” Saijo, PhD, MBA, is the Sr. VP, managing director of DIA Japan. He previously established and lead the Academia Clinical Research Division, CMIC K.K., as Corporate Officer managing clinical research and investigator sponsored clinical trials. Dr. Saijo’s experience also includes serving as Director of R&D for Alcon Japan; Director of R&D and Representative Director for start-up operations of Ferring Pharmaceuticals Co. Ltd.; and as VP of Medical, Clinical and Regulatory Affairs for Japan & APEC for OvaScience. Dr. Saijo earned his PhD in Medical Science from Tokyo Medical and Dental University Graduate School of Medicine and Dentistry, and his MBA in Business Administration from Temple University Business School, Japan Campus.

Tong-Yan Wang

Senior Vice President & Managing Director, DIA China

Send Email

Tong-Yan brings 20+ years of experience in the pharmaceutical industry with a track record of business leadership and development, engagement with stakeholders across industry and government, and volunteer leadership experience in non-profit associations. She joins DIA after spending 4 years as the CEO of Sanpower Group to build up its healthcare business. Before Sanpower, she worked in Xi’an Janssen in various roles under General Med, Specialty Rx, and Market Access & Government Affairs. Tong-Yan started her career as a professor at Xian Medical University after receiving her Bachelor of Medical Science degree. She earned her MBA from Xian Jiao Tong University and her PhD in Management from ISCTE in Lisbon, Portugal.