Quest Diagnostics Incorporated is a provider of diagnostic information services. The Company operates through two businesses: Diagnostic Information Services and Diagnostic Solutions. The Diagnostic Information Services business develops and delivers diagnostic testing information and services, providing insights that empower and enable a range of customers, including patients, clinicians, hospitals, integrated delivery networks (IDNs), health plans, employers and accountable care organizations (ACOs). Its Diagnostic Solutions group includes its risk assessment services business, which offers solutions for insurers, and its healthcare information technology businesses, which offers solutions for healthcare providers. The Company's services are provided under the Quest Diagnostics brand, but it also provides services under other brands, including AmeriPath, Dermpath Diagnostics, Focus Diagnostics, Athena Diagnostics, ExamOne, Quanum and Care360.