Board of Directors

William C. Weldon

Bill Weldon serves as Chairman of the Board of Directors for HeartFlow, Inc. He spent more than four decades at Johnson & Johnson, where he began his career as a sales representative, moved to roles of increasing responsibility across business segments, and ultimately led the company through significant expansion and growth as chairman and CEO. In addition to his board position at HeartFlow, he currently serves on the boards of directors of J.P. Morgan Chase & Co., CVS Health, Chubb Corporation and Exxon Mobile Corporation; and the board of trustees of Quinnipiac University.

Casey Tansey

Casey Tansey joined USVP as a general partner in April 2005. A veteran of the medical device industry, Casey brings over 25 years of entrepreneurial, early-stage medical device and seasoned operating experience to USVP. During his tenure as CEO and President of Epicor Medical from 2001 to 2004, Casey, along with a dedicated team, pioneered a minimally-invasive treatment for atrial fibrillation and transformed the company into a recognized market leader. He led Epicor’s acquisition by St. Jude Medical at a valuation of more than $200 million. Prior to Epicor, Casey was CEO and President of Heartport, a public company that helped pioneer minimally-invasive cardiac surgery which is now a Johnson & Johnson company. Before that, he was with Baxter Edward’s Cardiovascular Division for nearly ten years, holding various sales and marketing positions. During his tenure at Baxter, Casey was involved in launching innovative heart valve products that have grown to be the market leaders.

Charles A. Taylor, Ph.D.

Dr. Taylor is a co-founder, Chief Technology Officer (CTO), and member of the Board of Directors of HeartFlow Inc. Previously, he was an Associate Professor in the Department of Bioengineering and Surgery at Stanford University with courtesy faculty appointments in the Departments of Mechanical Engineering and Radiology. He is internationally recognized for the development of computer modeling and imaging techniques for cardiovascular disease research, device design and treatment planning. He received his B.S. degree in Mechanical Engineering, M.S. degree in Mechanical Engineering and M.S. degree in Mathematics from Rensselaer Polytechnic Institute and a Ph.D. in Mechanical Engineering from Stanford University.

Jeffrey C. Lightcap

Jeffrey C. Lightcap serves as a Senior Managing Director of HealthCor Partners Management, L.P., a leading growth-oriented private equity fund which invests across all sectors of healthcare. HealthCor Partners is affiliated with HealthCor Management, a successful, research driven, heathcare-focused hedge fund. Prior to joining HealthCor Partners in late 2006, Mr. Lightcap was a Senior Managing Director at JLL Partners, a leading middle-market private equity fund, from 1997 to 2006. Prior to JLL Partners, Mr. Lightcap was a Managing Director at Merrill Lynch & Co., Inc., in the mergers and acquisitions group. Prior to joining Merrill Lynch, Mr. Lightcap was a Senior Vice President in the mergers and acquisitions group at Kidder, Peabody & Co. and briefly at Salomon Brothers. Mr. Lightcap received a B.E. in Mechanical Engineering from the State University of New York in 1981 and an M.B.A. from the University of Chicago in 1985. Mr. Lightcap serves on the board of directors of a number of companies, Careview Communications, Inc., RTI Surgical Inc. (Nasdaq: RTIX), and KellBenx, Inc.

John H. Stevens, M.D.

John Stevens has had a distinguished career as an entrepreneur and healthcare professional, and is the current President and CEO of HeartFlow. Previously, he was Co-Founder and CTO of Heartport and the Co-Founder and Executive Chairman of Amp Resources. He has had extensive experience founding, investing and leading technology focused companies. He was an Assistant Professor of Cardiovascular Surgery at Stanford University. He received his B.S. from the University of Utah and M.D. from the Stanford University School of Medicine.

Julie Cullivan

Julie Cullivan has more than 25 years of operational and technical experience across some of the world’s largest cybersecurity and IT brands. She has spent her career helping enterprise software and cloud companies scale their businesses and is a sought-after speaker on diversity and inclusion, security as a boardroom imperative, innovation and building high-impact teams. Most recently, Julie was the Chief Technology and People Officer at Forescout Technologies, and she has held executive roles focused on global sales and business operations at FireEye, Autodesk, McAfee, EMC and Oracle. She also serves on the board of directors for Axon Enterprise, Inc., and has a B.S. degree in Finance from Santa Clara University.

Lonnie M. Smith

Lonnie Smith joined Intuitive Surgical as President and CEO in June 1997, and currently serves as Chairman of the Board of Directors. During his tenure as CEO, Intuitive Surgical grew from a start-up with no revenue to over one billion dollars in revenue and approximately 1,300 employees. Prior to joining Intuitive Surgical, Mr. Smith was Senior Executive Vice President of Hillenbrand Industries. Mr. Smith joined Hillenbrand in 1978; during his tenure, he was a member of the executive committee, the office of the president and the board of directors. Mr. Smith has also held positions at The Boston Consulting Group and IBM. Mr. Smith receives his B.S.E.E. from Utah State University and an M.B.A. from Harvard Business School.