On March 3, 2023, Quest Diagnostics Incorporated announced that its Board of Directors elected James E. Davis, Jim the Company's Chief Executive Officer and President, to serve in the additional position of Chairman of the Board effective April 1, 2023. Mr. Davis succeeds Stephen H. Rusckowski, who has served as Chairman of the Board since January 1, 2017. Mr. Davis, who joined the company in 2013 and assumed the role of Chief Executive Officer, President and Director on November 1, 2022, will succeed former CEO Steve Rusckowski, who remains Chairman through March 31, 2023.

Previously, Jim served as Executive Vice President for General Diagnostics since 2017. Jim joined Quest in April 2013 as Senior Vice President, Diagnostic Services and was named Senior Vice President, Operations in February 2014. Before joining Quest, Jim served as CEO of InSightec Inc. Prior to that, he held senior management positions in a two-decade career in General Electric's aviation and healthcare businesses, including leading GE's MRI business for five years.

Before GE, Jim led the development of strategic and operating initiatives for clients of McKinsey & Company Inc. He holds a master's degree in management from the Sloan School of Management at Massachusetts Institute of Technology, a master's degree in science from MIT and a bachelor's degree in aeronautical engineering from the University of Michigan. Steve Rusckowski joined Quest Diagnostics as Chief Executive Officer in May 2012. At that time Quest was not growing, and he led the transformation of the company into the leader in diagnostic information services with strong financial performance.

Steve focused Quest on accelerating growth and driving operational excellence by improving relationships with health plans and hospital health systems and expanding faster-growing businesses in advanced diagnostics and consumer testing. At the outset of the COVID-19 pandemic, Steve became deeply involved in the national response, partnering with elected officials and public health authorities, as well as healthcare providers, payers and retailers, to quickly expand access to COVID-19 testing. Prior to joining Quest Diagnostics, Steve was CEO of Philips Healthcare.

He joined Philips in 2001 when it acquired the Healthcare Solutions Group he was leading at Hewlett-Packard/Agilent Technologies. Steve served as Chairman of the Board of Directors of the American Clinical Laboratory Association from 2014 to 2017. He is also an Emeritus Director of Project Hope.

He earned a Master of Science degree in Management from the Sloan School of Management at Massachusetts Institute of Technology and a Bachelor of Science degree in Mechanical Engineering from Worcester Polytechnic Institute, where he serves on the Board of Trustees.