Therefore, we require that all associates receive all required vaccinations, including, but not limited to, measles, mumps, flu (based on the seasonal availability of the flu vaccine typically during October-March each year), COVID-19 vaccine (required in CA, OR and HI), as a condition of employment, and annually thereafter. Adventist Health Simi Valley is a 144-bed, nonprofit, faith-based hospital, providing a full range of inpatient, outpatient, emergency and diagnostic services to communities in Simi Valley.