Most Valuable CEO #4 – Timothy E. Guertin

#4 Timothy E. Guertin, Varian Medical Systems
#4 Timothy E. Guertin


Varian Medical Systems

Timothy E. Guertin is president and chief executive officer of Varian Medical Systems and a member of the company’s Board of Directors.

Guertin joined Varian in 1976. Prior to being appointed CEO in February, 2006, he served a year as Varian’s president and chief operating officer. He was general manager and president of Varian’s Oncology Systems business, the company’s largest business and the world’s leading supplier of linear accelerators for radiation therapy for cancer, from 1990 to 2005. While managing Varian Oncology Systems, Mr. Guertin was named a corporate vice president in 1992 and executive vice president in 1999.

Score 2010 Score % Change In Score Market Value/Invested Capital Three-Year EM EM Change Mgmt Quality
94.8 91.8 3.3% A A A A

#5 Steve P. Jobs, Apple »« #3 Jeffery H. Boyd,

Chief Executive magazine (published since 1977) is the definitive source that CEOs turn to for insight and ideas that help increase their effectiveness and grow their business. Chief Executive Group also produces e-newsletters and online content at and manages Chief Executive Network and other executive peer groups, as well as conferences and roundtables that enable top corporate officers to discuss key subjects and share their experiences within a community of peers. Chief Executive facilitates the annual “CEO of the Year,” a prestigious honor bestowed upon an outstanding corporate leader, nominated and selected by a group of peers, and is known throughout the U.S. and elsewhere for its annual ranking of Best & Worst States for Business. Visit for more information.