Skip to main content

Our People

From leadership to scientific experts

John H. Sampson, MD, PhD, MHSc, MBA

 Director

Jon Meltzer, Ph.D.

 Executive Vice President, Chief Operations Officer

Jonathan David Williams, PhD

 Director Research and Development, Oncology

Jonathan L. Klein, MD

 Medical Director, Immunohistochemistry and Digital Pathology

Jonathan L. Klein, MD

 Divisional Medical Director, Labcorp Oncology and Dianon Pathology Co-Discipline Director, Immunohistochemistry & Digital Pathology

Joseph Ferreira

 Quality Director, Mid-America Division

Joseph M. Volpe, PhD

 Executive Director, Scientific Strategy & Commercialization

Joseph S. Papiez, MD

 Anatomic Pathology, Clinical Pathology and Hematology

Josh Rifkin

 Associate Quality Director, Regulatory Affairs

Joshua B. Kish, MD

 Vice President and Divisional Medical Director, Atlantic Division, Labcorp

Judy Snyder

 Quality Director, North Central Division

Julia Wang

 Executive Vice President and Chief Financial Officer

Karis Lee, MSN, APRN, FNP-C

 Medical Science Liaison, Autoimmune | Rheumatology

Karla J. Walker, PharmD

 AVP, Discipline Director

Katherine T. Landschulz, PhD

 Senior Director and Therapeutic Area Lead, Cardiovascular/Metabolic/Renal Disease, NAFLD/NASH, Neurodegenerative Diseases, Biomarker Solution Center

Kathleen Bailey, MS, NP, PhD

 Medical Science Liaison for Autoimmune / Neurology