Quest Diagnostics is a leading provider of diagnostic information services for physicians, hospitals, and patients. Headquartered in New Jersey, the company operates over 2,000 domestic locations. They provide patients with clinical lab testing, pathology, and diagnostic screening for the use of preventative care, chronic condition management, and early detection of diseases. Quest Diagnostics currently serves approximately half of all U.S. physicians and hospitals, making it a trusted partner in the healthcare system.