St. John's Regional Medical Center in Oxnard and St. John's Pleasant Valley Hospital in Camarillo are a division of Catholic Healthcare West, a not-for-profit corporation sponsored by several religious communities. Together, St. John's hospitals represent the largest acute-care health organization in Ventura County. St. John's hospitals serve all of Ventura County and beyond, including the cities of Camarillo, Moorpark, Oxnard, Port Hueneme, Ventura, and Somis.

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