Zenith Administrators is one of the largest, third-party benefits administrators in North America. It serves as an administrator, manager and technology service vendor for corporate employers, government entities and trade associations. The company operates more than 30 offices in several U.S. states, including Arizona, California, Colorado, Maryland, Illinois, Indiana and Louisiana. Zenith Administrators has expertise in managed care and eligibility accounting. It coordinates a drug testing program that allows employers to access information about employees. The company also specializes in issues related to health claims processing and pension and retirement administration. In addition, Zenith Administrators offers services for public employer benefits plans.