From Wikipedia, the free encyclopedia
Acquisition history[edit]
The following is an illustration of the company's mergers, acquisitions, spin-offs and historical predecessors:
UnitedHealth Group<br />(Founded 1974 as
Charter Med Incorporated)
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| UnitedHealthcare
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Ramsey-HMO
(Acq 1994)
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The MetraHealth Companies Inc
(Acq 1995)
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HealthPartners of Arizona
(Acq 1998)
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AmeriChoice
(Acq 2002)
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Mid Atlantic Medical Services
(Acq 2003)
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Golden Rule Financial
(Acq 2003)
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Touchpoint Health Plan
(Acq 2004)
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Oxford Health Plans
(Acq 2004)
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PacifiCare Health Systems
(Acq 2005)
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John Deere Health Care
(Acq 2005)
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Sierra Health Services Inc
(Acq 2007)
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SecureHorizons Medicare Advantage HMO
(Sold to Humana Inc. 2007)
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The Lewin Group
(Acq 2007)
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Health Net Inc. Northeast subsidiaries
(Acq 2009)
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XLHealth Corporation
(Acq 2012)
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Amil Participações S.A.
(Acq 2012)
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| Optum
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| Igenix
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