Greg Johnson is a seasoned expert in clinical data sciences with over 30 years of experience across Quotient Sciences and previously with Chiltern, Kendle, Charles River, and Inveresk Research. He specializes in early-phase clinical trials and has led global biometrics operations supporting Phase I–IV studies.

At Quotient Sciences, Greg has held senior leadership roles for over a decade, currently serving as Executive Director of Data Sciences within the Scientific Consulting team. He works closely with sponsors to optimize trial design and execution, bringing deep expertise in database programming, data management, statistical analysis, and medical writing.