Our passion to fulfill the promise of personalized medicine requires that we hire and support the brightest minds. Meet some of the individuals responsible for the management of the company.​

Board of Directors

The Caris Life Sciences® Board of Directors is responsible for the overall management of the company, including guiding strategies and monitoring company performance. The Caris Board is composed of a diverse group of leaders with distinct perspectives. Many of the current directors have held leadership roles at major domestic and international companies, academic and scientific organizations, and governmental agencies.

David D. Halbert

Chairman, Founder and CEO

George Poste, DVM, PhD, FRC Path, FRS

Vice Chairman

Jonathan Knowles, PhD

Vice Chairman

Brian J. Brille

Board Member and Vice Chairman, Caris Life Sciences

Peter M. Castleman

Board Member

Jon S. Halbert

Board Member

Laurie Johansen

Board Member

Danny Phillips

Board Member

Management Team

The Caris Life Sciences® Management Team is empowered by the Board of Directors to manage and oversee company operations, and execute strategies set by the Board. The Management Team is composed of a diverse group of leaders with experiences spanning business, finance, medical, scientific, and technical services.

David D. Halbert

Chairman, Founder and CEO

Brian J. Brille


David Spetzler, MS, PhD, MBA

President and Chief Scientific Officer

Stephanie Thomas

Executive Vice President,
Chief of Staff, Office of the CEO

Jim Abraham

Senior Vice President and
Chief Data Officer

Russ Farr

Senior Vice President and
General Counsel

Michael Halbert

Senior Vice President,
Human Resources

Senior Vice President,
Clinical Research Operations

W. Michael Korn, MD

Chief Medical Officer

Ron Merlino

Senior Vice President,
Chief Information Officer

Chadi Nabhan, MD, MBA, FACP

Precision Oncology Alliance

Thomas Parker, MBA

Senior Vice President,
Chief Financial Officer

Michael Sullivan

Senior Vice President,
Chief Commercial Officer

Ginger Appleberry

Chief Compliance Officer and
Associate General Counsel

Scientific Advisory Board

The Scientific Advisory Board is comprised of external thought leaders who provide independent opinions and recommendations about Caris Life Sciences® initiatives and offerings. The Scientific Advisory Board members are experts in contemporary cancer research, drug and diagnostic development, clinical trial design, regulatory issues and reimbursement policy, as well as clinical oncologists from both the community and academic medical center settings.

George Poste, DVM, PhD, FRC Path, FRS


Jonathan Knowles, PhD


Steven D. Averbuch, MD

Former Vice President and Head of Precision Medicine at Bristol-Myers Squibb

Anna Barker, PhD

Co-Director, Complex Adaptive Systems Initiative, Arizona State

Donald Berry, PhD

Professor, Department of Biostatistics, The University of Texas MD Anderson Cancer Center

George Demetri, MD

Professor of Medicine, Harvard Medical School

Amy Heimberger, MD

Professor, Department of Neurosurgery, The University of Texas MD Anderson Cancer Center

Thomas Herzog, MD

Deputy Director, University of Cincinnati Cancer Institute and The Barrett Cancer Center

Holden Terry Maecker, PhD

Professor of Microbiology and Immunology, Stanford University

Clay Marsh, MD

Vice President and Executive Dean for West Virginia University Health Sciences

John L. Marshall, MD

Professor of Medicine and Oncology, Georgetown University

Frank McCormick, PhD, FRS, DSc (hon)

Leader, National RAS Initiative

Hamilton Moses, III, MD

Neurologist and Management Consultant, Johns Hopkins School of Medicine

David R. Parkinson, MD

President and Chief Executive Officer, ESSA Pharma, Inc.

John Quackenbush, PhD

Professor, Computational Biology and Bioinformatics, Harvard School of Public Health

Brian Rubin, MD, PhD

Chair of the Robert J. Tomsich Pathology & Laboratory Medicine Institute (RT-PLMI), Cleveland Clinic

Lee Schwartzberg, MD, FACP

Executive Director, West Cancer Center

Amalio Telenti, MD, PhD

Chief Data Scientist & Head of Computational Biology, Vir Biotechnology Inc.

Olga Troyanskaya, PhD

Professor, Lewis Sigler Institute for Integrative Genomics, Princeton University

Jeffrey Vacirca, MD, FACP

CEO and Managing Partner, New York Cancer & Blood Specialists

Nicholas J. Vogelzang, MD

Vice-Chair, SWOG GU Committee

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