Cal. Health & Safety Code § 1364.1

Within 30 days of receiving the notice required by Section 1255.1, a health care service plan shall notify, or provide for the notification of, enrollees who have selected a medical group or independent practice association that uses a hospital that the hospital will reduce or eliminate its emergency services. The plan may require that its contracting medical groups and independent practice associations that use the hospital provide this notice. The notice shall include a list of alternate hospitals that may be used by enrollees for emergency services.