Management Team

Management Team

John H. Stevens, M.D.Chief Executive and Chairman of the Board of Directors

Dr. Stevens is the Chairman and CEO of HeartFlow Inc. He has had a distinguished career as an entrepreneur and health care professional. He was the Co-Founder and CTO of Heartport, the Co-Founder and Executive Chairman of Amp Resources, Co-Founder and Chairman and CEO of Sundrop Fuels. 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.


Charles A. Taylor, Ph.D.Founder, Chief Technology Officer, and Member of the Board of Directors

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.


Christopher K. Zarins, M.D.Founder, Chief Medical Officer, and Member of the Board of Directors

Dr. Zarins is a co-founder, Chief Medical Officer (CMO), and member of the Board of Directors of HeartFlow Inc. He served as the Chief of Vascular Surgery at the University of Chicago from 1978-1993. In 1993 he joined Stanford University as the Walter Clifford and Elsa Rooney Chidester Professor in Surgery and served as the Chief of Vascular Surgery at the Stanford University Medical Center from 1993-2005. Dr. Zarins served as President of the Society of Vascular Surgery in 1999.

He received his B.A. from Lehigh University and M.D. from Johns Hopkins University School of Medicine.


Jeffrey KirkChief Financial Officer

Mr. Kirk has nearly 30 years of experience working in various finance roles. He spent 26 years at Marriott International in both domestic and international locations. His responsibilities included management of finance operations in individual hotels as a Director of Finance; leading to responsibility for all Marriott hotels located in Mexico, Central America and Western South America in the finance discipline. Mr. Kirk has spent 17 years living outside the US on various international assignments. He has most recently served as Director of Operations for Amp Capital Partners, mentoring and supporting small and growing businesses.

He has a B.A. in Finance from the University of Utah and an MBA from Utah State University.


Chris HughesVice President of Engineering

Mr. Hughes has nearly 20 years of experience in developing health care and internet technology. As Senior Director of Operations in Healthcare Informatics at Philips, he directed a global team in implementation of applications for hospitals and doctors. Mr. Hughes was previously the Vice President of Operations at Stentor, a leading radiology imaging information systems provider. He also founded and was Vice President of Engineering at Trilix Information Systems, a developer of healthcare integration software acquired by eMed Technologies.

He received his M.S. in Computer Science from the Stanford University School of Engineering.


Dustin MichaelsVice President of Clinical, Quality and Regulatory Affairs

Mr. Michaels has over 15 years of experience in cardiovascular medicine and wide-ranging experience in the medical device regulatory and clinical arena. He has been instrumental in initial clinical testing and gaining commercial approval for several novel cardiovascular products including AAA stent grafts, coronary and carotid distal embolic protection and chronic total occlusion recanalization devices. Previously he served in Regulatory and Clinical Management roles at FlowCardia, PercuSurge and AneuRx. FlowCardia was acquired by CR Bard. Percusurge and AneuRx were acquired by Medtronic.

He received his B.S. in Chemistry from Kent State University.


Scott AshworthVice President of Sales and Marketing

Mr. Ashworth has over 20 years of global experience leading Sales and Marketing operations for medical imaging companies. Before HeartFlow, he served as the Vice President of Worldwide Sales and Service at Siemens Healthcare where he had global responsibility across multiple organizations. Before Siemens, Mr. Ashworth held various leadership roles at Acuson and Hewlett Packard Medical in sales, marketing and business development functions across the US and Asia Pacific. His vast multi-national experience and dual citizenship provide a valuable perspective required to build and lead world class, growth oriented organizations.

He received his B.A. from UCLA in Economics, minor in Kinesiology.


Timothy FonteVice President of Product Management

Mr. Fonte has over 7 years of experience in cardiovascular and medical device research, design, and operations as both engineer and leader. Before HeartFlow, Mr. Fonte led mechanical design of the first sub-cutaneous implantable defibrillator at Cameron Health. Mr. Fonte has a long association with HeartFlow’s core technology – having worked as a research assistant with Dr. Taylor on patient specific blood flow modeling during his time at Stanford University.

He received his B.S. from Rensselaer Polytechnic Institute and M.S. from Stanford University in Mechanical Engineering with a focus on biomechanics and computational mechanics.


Jesse KinggVice President of Global Operations

Mr. Kingg has over twenty-six years of leadership experience in a vast array of disciplines. He spent over twenty years in the US Navy as a nuclear engineer / submariner and F/A – 18 combat pilot. After retiring from the Navy as Commanding Officer of a fighter squadron, he held leadership positions in Quality and Manufacturing at Guidant Corporation and Abbott Vascular. Just prior to joining HeartFlow, he served as the General Manager at biotech firm Dendreon Corporation, where he established Dendreon’s Atlanta manufacturing facility and oversaw a team of 150 staff members.

He received his B.S. in Physics from Alma College and an M.S. in Business Management from the Stanford Graduate School of Business.