Executive Team

John W. Hanna

John W. Hanna

PRESIDENT AND CHIEF EXECUTIVE OFFICER

PRESIDENT AND CHIEF EXECUTIVE OFFICER

John W. Hanna is CareDx’s President and Chief Executive Officer (CEO). John brings to CareDx over two decades of executive leadership at the intersection of new technology development and revenue growth in the molecular diagnostics and life sciences tools industries. John previously served as Chief Executive Officer of Apton Biosystems, Inc., where he led the development of a high throughput next-generation sequencing (NGS) platform for liquid biopsy and other clinical applications. Apton Biosystems, Inc. was acquired by Pacific Biosciences of California, Inc. in August 2023, where served as Vice President of Corporate Development.

John previously spent ten years at Veracyte, Inc., from September 2011 to March 2021, an oncology diagnostics company in the fields of thyroid, lung, breast, and prostate cancer, where he held numerous roles including Chief Commercial Officer and Vice President of Marketing. Prior to Veracyte, John held leadership roles at Humana and IBM. John received a BS in Political Science from Hampden Sydney College in 2001 and an MBA from the University of Miami in 2008.
Stacey Follon

Stacey Follon

Senior Vice President, Head of Human Resources

Senior Vice President, Head of Human Resources

Stacey Follon is Senior Vice President, Head of Human Resources. A member of the Executive Leadership Team, Stacey is responsible for leading the human capital strategy for more than 700 employees worldwide. She joined CareDx in February 2022 based in Omaha, Nebraska as a Vice President, HR Business Partner for Digital business, G&A (including Finance, Legal and HR) and Business Development. Her passion and impact were immediately clear as she spearheaded employee engagement efforts, building capabilities for employees and managers, and strategic talent planning.

Stacey brings highly valued experience from Intrado (a Multinational Telecomms Technology Company) where she led Human Resources Mergers and Acquisitions activities since 2019. Prior to this role, Stacey worked at S&P Global Platts and Bloomberg LP in a variety of progressive HR executive leadership roles that included living and working Internationally in the UK, Asia, New York and Omaha. Stacey graduated from Florida State University with a B.A. in English Literature.
Marica Grskovic, PhD

Marica Grskovic, PhD

CHIEF OPERATIONS OFFICER

CHIEF OPERATIONS OFFICER

Marica has spent the past two decades building and leading high-performing technology and product development teams. At CareDx, Marica has held roles of increasing leadership and management responsibilities and is currently accountable for strategy and operational oversight of the Cell Transplant Therapy business unit and Pharma Partnerships. Earlier in her career, Marica spearheaded the development of AlloSure®, the first analytically and clinically validated cell-free DNA test developed specifically for transplant patients. Prior to CareDx, Marica was a founding scientist at the stem cell-based drug discovery platform technology company iPierian (acquired by BMS), and its spin out, True North Therapeutics (acquired by Bioverativ).

Marica completed her post-doctoral fellowship on gene regulation in stem cells at University of California San Francisco and holds a PhD in molecular biology and biochemistry from European Molecular Biology Laboratory and University of Heidelberg, Germany.
Abhishek Jain

Abhishek Jain

CHIEF FINANCIAL OFFICER

CHIEF FINANCIAL OFFICER

Abhishek became CareDx’s Vice President, Corporate Controller in August 2021. Prior to joining the Company, he spent the last 20 years at Agilent Technologies, Inc., a global leader in the life sciences, diagnostics and applied chemical markets, in a series of finance and customer-facing roles of progressing responsibility. In his last role at Agilent as an Associate Vice President II, Controller-Sales and Marketing, he drove above market growth for a $5B business. He has extensive knowledge in driving channel strategy, expanding margins, scaling operations, and leading global teams. Mr. Jain is a member of the Institute of Chartered Accountants of India.
GS Jha

GS Jha

SENIOR VICE PRESIDENT, CHIEF INFORMATION OFFICER & CHIEF INFORMATION SECURITY OFFICER

SENIOR VICE PRESIDENT, CHIEF INFORMATION OFFICER & CHIEF INFORMATION SECURITY OFFICER

GS Jha is Senior Vice President, Global CIO and CISO at CareDx, bringing more than 25 years of experience, primarily in the life sciences and med tech industries. In his role at CareDx, GS is responsible for leading the company’s global IT strategies, Cybersecurity, software products quality functions, with an emphasis on organizational and digital transformation, business continuity, software product quality, and cybersecurity risk mitigation.

Prior to CareDx, GS Jha served as Global Chief Information Officer and Chief Information Security Officer at Accuray Inc., where he led the restructuring and rebuilding of the IT organization, and the implementation of processes, policies and applications necessary to develop world-class, secure IT services while reducing costs. Most notably the implementation of global enterprise-wide SAP ERP program implementation in record 12 months on time within budget. Previously, GS Jha has led the development and 510K Clearance of eight medical device software products and overseen their introduction to over two thousand labs globally. He also has held leadership roles at Bio-Techne, Thermo Fisher Scientific, Amgen, Accenture, and FedEx.

GS earned a Master of Science degree in computer science from Wayne State University, a Master of Business Administration degree from Northwestern University – Kellogg School of Management and a Bachelor of Science degree in computer engineering from the University of Poona in India.
Alexander L. Johnson

Alexander L. Johnson

PRESIDENT OF PATIENT AND TESTING SERVICES

PRESIDENT OF PATIENT AND TESTING SERVICES

Alex Johnson brings broad international business experience in pharma and clinical diagnostics to CareDx. Prior to joining the company, Alex was Chief Operating Officer of BioGraph 55, a venture-backed immuno-oncology drug development company that uses advanced imaging analytics and machine learning to capture clinically relevant content from the tumor microenvironment. From 2009 to 2014 he was with Novartis, where he held roles at Novartis Diagnostics, a global provider of blood screening solutions, and Novartis M&A, based in Basel, Switzerland, where he led acquisitions in oncology and diagnostics. Prior to Novartis, Alex was with UBS Investment Bank in the Global Healthcare Group. Alex studied economics at Union College (N.Y.) and received his MBA in finance from Columbia Business School.
Jeffrey A. Novack

Jeffrey A. Novack

GENERAL COUNSEL

GENERAL COUNSEL

Jeff joined CareDx in 2021. Before joining CareDx, Jeff served as an Assistant Attorney General in the Investor Protection Bureau of the New York Attorney General’s Office. Prior to that, Jeff practiced at two international law firms and clerked for The Honorable Renée Marie Bumb, Chief Judge of the United States District Court for the District of New Jersey. Jeff is a graduate of New York University School of Law and Washington University in St. Louis – Olin Business School.
Kashif Rathore

Kashif Rathore

CHIEF OF PATIENT AND DIGITAL SOLUTIONS

CHIEF OF PATIENT AND DIGITAL SOLUTIONS

Kashif Rathore has over 22 years of executive management experience in the healthcare and information technology industry. Before joining CareDx, Kashif was Vice President, Interoperability at Cerner Corporation, a global provider of electronic health records and population health solutions. He headed the expansion of the unit with worldwide growth in its interoperability business. Having served on the Board of Directors for CommonWell Health Alliance and Superscripts Advisory Council, he brings industry perspective that enables him to engage leaders across the industry to build alignment. Kashif holds a Bachelor of Business Administration degree in Management Information Systems from the University of Central Oklahoma, and a Bachelor of Arts degree in Mathematics from the University of Punjab. Kashif earned an Executive MBA from University of Missouri, Kansas City.
Robert N. Woodward, PhD

Robert N. Woodward, PhD

CHIEF SCIENTIFIC OFFICER

CHIEF SCIENTIFIC OFFICER

Dr. Robert Woodward has led research and development projects in transplant diagnostics and gene expression discovery for over 20 years. Most recently at CareDx he was responsible for the bioinformatics, biostatistics, and laboratory teams that developed and validated AlloSure®, an application of cell-free DNA to solid organ transplantation. Earlier in his career, he initiated biomarker discovery efforts with BioCardia and XDx and subsequently led the laboratory development of AlloMap, a gene expression test that has become an integral component of precise patient care in heart transplantation. During a post-doctoral fellowship at the Gladstone Institutes and University of California San Francisco, Dr. Woodward developed unique methods for analysis of gene regulation in vivo to study atherosclerosis. Following a bachelor’s degree in biology from Missouri State University, Dr. Woodward earned his Ph.D. in physiology at the University of Missouri-Columbia where he described the effects of a new transcription factor in the coordinate regulation of gene expression in response to steroids.

Senior Leadership Team

Hal Gibson

Hal Gibson

SENIOR VICE PRESIDENT, STRATEGIC PARTNERING

SENIOR VICE PRESIDENT, STRATEGIC PARTNERING

Hal Gibson brings 22 years of sales, marketing, and business development experience in transplant diagnostics to CareDx. Prior to CareDx, Hal was at One Lambda, Inc., where he was a leader in launching and driving early clinical research and commercial adoption of single antigen bead technology for detection of anti-HLA donor specific antibodies. Post-acquisition of One Lambda by Thermo Fisher Diagnostics, he served as a senior leader in its Transplant Diagnostics business, where he helped drive clinical strategy and business development. Hal received a Bachelor of Science in biology from the University of Tampa.
Julian Husbands, MD

Julian Husbands, MD

VICE PRESIDENT, COMMERCIAL OPERATIONS - TESTING SERVICES

VICE PRESIDENT, COMMERCIAL OPERATIONS - TESTING SERVICES

Julian has more than two decades of experience spanning the healthcare spectrum, as both a clinician and through his work in multiple corporate functions with different types of companies. At Apria Healthcare, he led the creation and execution of the most successful initiative ever at Apria — a COPD clinical management program that grew to over $200M annually in five years with a 60% reduction in readmissions. At Edwards Life sciences, he had strategic and line management responsibilities within the Critical Care and Surgical Heart Valve businesses. Julian’s background also includes management consulting with McKinsey and Company, and he trained as a general surgeon at the University of Pennsylvania. Julian received his Bachelor of Science in business administration from the University of California, Berkeley and his Doctor of Medicine from the University of Pennsylvania.
Ashish Kothari, MD

Ashish Kothari, MD

VICE PRESIDENT, CELL TRANSPLANT THERAPY AND PHARMA PARTNERING

VICE PRESIDENT, CELL TRANSPLANT THERAPY AND PHARMA PARTNERING

Ashish Kothari has more than 20 years of experience in clinical development, medical affairs, strategy and business development that spans across academia, industry, and investment management. Ashish started his academic career as a spine surgeon and managed patients and taught medical students for 10 years. Following that, he held multiple leadership roles in strategy, medical affairs, and clinical development across cell therapy, oncology, neurology, infectious disease, autoimmunity, and transplant, including roles at CareDx, Genentech/Roche, McKinsey, and Royalty Pharma. He cites CareDx’s commitment to transplant patients, focus on innovation, can-do attitude, and singular focus on improving transplant patient outcomes as the elements that fuel his passion to work with his amazing team to drive the science, enhance the standards of medical practice, and ultimately, improve patients’ lives.

Ashish conducted research in tissue engineering and cell therapy at the Harvard Medical School and MIT’s Health Sciences and Technology (HST) program. He earned an MBA from the MIT-Sloan School of Management, where his thesis focused on the impact of research, innovation, and regulatory strategy on the global launch of medical technologies. He is also a CFA charter holder from the Chartered Financial Analysts’ Institute.
Marco Scheller

Marco Scheller

SENIOR VICE PRESIDENT, CLINICAL OPERATIONS

SENIOR VICE PRESIDENT, CLINICAL OPERATIONS

Marco brings over 30 years of global experience in therapeutics and diagnostics with mid- and large-cap pharma companies in roles spanning strategy, new product development, marketing, analytics, business development and operations, both commercial and clinical. Most recently at CareDx, Marco led the R&D Program Management Office, supporting the development of various new products and services, including AlloMap Kidney and KidneyCare. Prior to joining CareDx, Marco led the strategy and new products function at Ferring. Earlier in his career, Marco worked at McKinsey & Co., advising healthcare clients around the world. Besides transplantation, Marco’s therapeutic area experience includes cardiovascular, CNS, women’s health and oncology. Marco holds a master’s in pharmaceutical process engineering from ETH Zurich and an MBA in finance from Columbia Business School.
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