This document provides a summary of the early history of the healthcare IT company Cerner. It describes how Cerner was founded in 1979 by Neal Patterson, Cliff Illig, and Paul Gorup under the name PGI, Inc. It details the educational and professional backgrounds of the three founders. It also discusses some of PGI's early clients in healthcare and how they began focusing on clinical systems, pioneering their PathNet product. The company would later become known as Cerner and grow to be one of the largest healthcare IT vendors.