Headquartered near Boston, Massachusetts, PAREXEL operates in 80 locations in 51 countries around the world, and has 18,660 employees.

We provide the most comprehensive drug development capabilities of any CRO worldwide. Our global regulatory expertise, Phase I-IV clinical research services, integrated eClinical technologies, and advanced commercialization services all work together to move you through the development journey more smoothly and cost-effectively from beginning to end.