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James E. Davis

CEO-Elect & EVP, General Diagnostics

James E. Davis is CEO-elect of Quest Diagnostics.


On February 3, 2022 Quest announced that, as part of a gradual leadership succession plan, Mr. Davis will assume the responsibilities of Chief Executive Officer, effective November 1, 2022, succeeding Steve Rusckowski.


Jim was named to his current role as Executive Vice President for General Diagnostics in 2017, in which he oversees Quest’s general diagnostics business, accounting for more than 80% of the company’s $10.8 billion revenues in 2021 and encompassing three-quarters of its employee base. He has compiled a strong record of revenue and earnings growth through strengthening relationships with Quest’s largest health plans and its hospital health system customers. He also has been responsible for integrating Quest’s regional lab acquisitions. Since early 2020, he has led and advanced the evolution of Quest’s ESG strategy.


Mr. Davis joined Quest in April 2013 as Senior Vice President, Diagnostic Services, and he managed a portfolio of businesses and was instrumental in refocusing the business on diagnostic information services. He was then named Senior Vice President of Operations in February 2014.


Before joining Quest, he served as CEO of InSightec, Inc., a medical device company. Prior to that, Jim 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, Mr. Davis led the development of strategic and operating initiatives for clients of McKinsey & Company, Inc. Mr. Davis 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.


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  • CEO-Elect & EVP, General Diagnostics

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