Founded in 1990 by J.D. Dyer, The IMX Companies provide managed health care and insurance services to more than 1 million covered individuals, 75,000 health care providers and 50,000 pharmacies. The IMX Companies offer a variety of health plans including Health Maintenance Organizations, Health Insurance and Reinsurance, Preferred Provider Organizations, Point of Service plans, Administrative Service plans and Prescription Benefit Management plans. These plans are offered to employers, health and welfare trust funds, government entities and individuals. Maintaining headquarters in Tempe, Ariz., the privately-held, national company provides its development, management and information services through its wholly-owned subsidiary companies from its service centers in Nevada, Arizona, Hawaii, Iowa and Illinois