Founded in 1860, The Guardian Life Insurance Company of America provides life, long term care insurance, disability income, medical and dental insurance products. Based in Irvine, Calif., the company has a network of more than 3,000 financial representatives in more than 80 agencies nationwide. It serves individuals, business owners and their employees. The Guardian Life Insurance Company of America also operates one of the largest dental networks in the United States. The company's personal finance solutions comprise mutual funds, investment advisory services and brokerage accounts.