PacificSource Health Plans is one of the leading health insurance companies in the United States. A nonprofit organization, PacificSource has been operational for more than 45 years. Based in Eugene, Ore., the company maintains contracts with more than 10,000 physicians, physician organizations, hospitals, medical facilities and other health care providers. It offers group insurance clients a wide range of medical, dental, prescription drug and vision benefits. PacificSource also serves individuals and families with a variety of medical plans and portability and Medicare supplement policies. Additionally, the company provides customized plans that include FlexPerks, Prime, Choice, Personal Options, preferred provider organization plan designs and self-funded dental policies.