Health Net was established as the nonprofit Health Net of California in 1977 by
Blue Cross. In 1992, a California order permitted the company to convert from a nonprofit to a for-profit company. Under the terms of the
California Department of Corporations' conversion order, the California Wellness Foundation, the successor charity to its nonprofit status, received $300 million plus 80 percent of the equity of Health Net's parent holding company. In April 1997, Health Systems International merged with Foundation Health Corporation to form Foundation Health Systems. Also in 1997, Foundation Health Systems acquired PACC Health Plans and Physicians Health Services. In November 2000, Foundation Health Systems changed its name to Health Net, Inc. when the company started trading on the New York Stock Exchange under the symbol HNT. In July 2009,
UnitedHealth Group bought Health Net's northeastern licensed subsidiaries for $510 million, and its Medicare and Medicaid businesses for $60 million. In November 2009,
Connecticut's attorney general office investigated a lost, unencrypted hard drive with customer data. Health Net offered two years of free credit protection from a company called Debix to affected customers. The sanctions were lifted in August 2011. Health Net continued to providing prescription drug plans as part of its Medicare Advantage plans.
Mergers and Acquisitions On July 2, 2015,
Centene Corporation announced it would acquire Health Net for $6.8 billion. In 2018, Health Net in Arizona was merged into other Centene holdings to form Arizona Complete Health, and Martha Smith was named as its Plan President and CEO. Separately, in September 2019, Brian Ternan was appointed CEO of Health Net in California, leading operations in that state. == Legal cases ==