Leadership
The executive leadership team at QuidelOrtho has a shared ambition; to build a healthier world where more people in more places have access to the critical diagnostic intelligence needed to chart the course ahead.
Together with our bold and brave diagnostic changemakers, we’ll continue to seek new answers, pursue new solutions and create new realities for you, your family, your community and our world.
Leadership
Brian Blaser, President & Chief Executive Officer of QuidelOrtho Corporation, designs the company’s long-term vision and strategy.
Brian Blaser has more than 25 years of senior leadership experience in the in-vitro diagnostics industry, including 15 years at Abbott Laboratories where he oversaw the company's global diagnostics organization, including its core laboratory, point of care, rapid diagnostics and molecular diagnostics businesses. Over his career, he has held key leadership positions in operations, finance, and engineering at Johnson & Johnson, Eastman Kodak, and General Motors. Mr. Blaser currently serves on the board of directors for Quanterix and Meridian Biosciences, and as senior advisor to McKinsey. He is Chair of the University of Dayton School of Engineering Advisory Council, and Chairman of the Board of Trustees for Cristo-Rey St. Martin College Prep. He is a former member of the board of the Advanced Medical Technology Association (AdvaMed). Mr. Blaser holds a master's degree in business administration from the Rochester Institute of Technology and a bachelor’s degree in mechanical engineering technology from the University of Dayton.
Chief Human Resources Officer
Lee Bowman, Chief Human Resources Officer, oversees strategies across compensation, benefits, recruitment, talent management, training and employee development.
Lee Bowman brings over 25 years of leadership experience in human resources across various industries. His career is marked by a strong commitment to talent management and fostering inclusive, dynamic workplace cultures. Before joining QuidelOrtho, Mr. Bowman served as Senior Vice President and Chief People Officer at RadNet, where he led transformative initiatives in workforce engagement, diversity and inclusion, and leadership development. His expertise was further honed through significant roles at Edwards Lifesciences, Levi Strauss & Co., and Target, where he spearheaded high-impact HR strategies that prioritized team development and organizational growth. Mr. Bowman holds a bachelor’s degree in psychology from Towson University and an MBA from San Diego State University.
Chief Financial Officer
Joseph Busky, Chief Financial Officer of QuidelOrtho Corporation, manages global finance and drives value creation to enable growth and long-term value.
Mr. Busky has more than 30 years of experience in corporate and operational finance for large, global companies across diagnostics, medical devices, telecom, and marketing services. He has worked both for publicly owned companies and within private equity-owned settings.
Prior to joining Ortho Clinical Diagnostics in July 2020, Mr. Busky served as Chief Financial Officer for Vyaire Medical, Inc., a global medical device company. Before Vyaire, Mr. Busky was Chief Financial Officer of FDH Velocitel, an engineering services company in the telecom space. Previously, he served seven years as Chief Financial Officer of InnerWorkings, Inc., a global marketing services firm with operations in 33 countries, and held corporate and divisional finance roles for a combined 11 years at Siemens Medical Solutions Diagnostics/Dade Behring Holdings, Inc., Bayer Diagnostics and Diagnostic Products Corporation, including serving as Chief Accounting Officer at Dade Behring.
Mr. Busky holds an MBA with a finance concentration, as well as a BBA in Accounting, from Loyola University in Baltimore. He also has a CPA certification in Maryland.
Chief Legal Officer
Michelle Hodges, Chief Legal Officer of QuidelOrtho Corporation, heads the legal and compliance group, supporting the company’s global business, and oversees all legal and governance matters affecting the company.
Ms. Hodges has over two decades of professional legal experience, specializing in advising public and private companies on mergers and acquisitions, strategic investments, securities law, and corporate governance.
Ms. Hodges served as Senior Vice President, General Counsel of Quidel Corp. from December 2020 to May 2022. Prior to joining Quidel, Ms. Hodges was a corporate lawyer with the international law firm of Gibson, Dunn & Crutcher LLP from December 1996 through November 2020, serving as a Partner of the firm for 16 years.
Ms. Hodges earned her J.D. and MBA from the University of California, Los Angeles. She earned a Bachelor of Horticultural Science degree with honors from Massey University, New Zealand.
Chief Operations Officer
Phil McLellan, Chief Operations Officer, leads all aspects of quality and operations strategy and execution, focusing on delivering high-quality products with great efficiency, enhancing scalability, and supporting growth initiatives across our organization.
Phil brings over 25 years of leadership experience in operations and manufacturing within the life sciences and automotive industries. Since joining QuidelOrtho in November 2020, he has led transformative efforts to expand operational scope and capabilities, especially through recent integrations. Before joining QuidelOrtho, Phil spent 11 years at Thermo Fisher Scientific, where he led division operations teams for Laboratory Consumables, Genetic Analysis, and Bioproduction businesses, spearheading initiatives to optimize performance and innovation. He also held multiple global manufacturing roles over 12 years with Toyota Motor Manufacturing, where he honed his expertise in lean manufacturing and process improvement. Phil holds a Bachelor of Science in Mechanical Engineering from the Georgia Institute of Technology.
Executive Vice President of Research & Development & Chief Technology Officer
Jonathan Siegrist, Ph.D. Executive Vice President of Research & Development & Chief Technology Officer, leads the company’s global R&D strategy, driving innovation and advancing next-generation diagnostic solutions.
Jonathan brings over 15 years of leadership experience in the biotechnology and diagnostics industries, with a focus on molecular diagnostics, microfluidic platforms, and biomedical engineering. Before joining QuidelOrtho, Jonathan served as Chief Technology Officer and Head of Assay Research and Development at Cepheid.
Jonathan holds a PhD and Master of Science in Biomedical Engineering from the University of California, Irvine and a Bachelor of Science in Electrical Engineering from the University of California, Los Angeles. He has been recognized for his ability to lead complex, multidisciplinary teams while fostering a culture of creativity and innovation.
Brian Blaser, President & Chief Executive Officer of QuidelOrtho Corporation, designs the company’s long-term vision and strategy.
Brian Blaser has more than 25 years of senior leadership experience in the in-vitro diagnostics industry, including 15 years at Abbott Laboratories where he oversaw the company's global diagnostics organization, including its core laboratory, point of care, rapid diagnostics and molecular diagnostics businesses. Over his career, he has held key leadership positions in operations, finance, and engineering at Johnson & Johnson, Eastman Kodak, and General Motors. Mr. Blaser currently serves on the board of directors for Quanterix and Meridian Biosciences, and as senior advisor to McKinsey. He is Chair of the University of Dayton School of Engineering Advisory Council, and Chairman of the Board of Trustees for Cristo-Rey St. Martin College Prep. He is a former member of the board of the Advanced Medical Technology Association (AdvaMed). Mr. Blaser holds a master's degree in business administration from the Rochester Institute of Technology and a bachelor’s degree in mechanical engineering technology from the University of Dayton.
