Cal. Health & Safety Code § 127420
(a) Each hospital shall make all reasonable efforts to obtain from the patient or the patient’s representative information about whether private or public health insurance or sponsorship may fully or partially cover the charges for care rendered by the hospital to a patient, including, but not limited to, any of the following:
(b) If a hospital bills a patient who has not provided proof of coverage by a third party at the time the care is provided or upon discharge, as a part of that billing, the hospital shall provide the patient with a clear and conspicuous notice that includes all of the following:
(5) Information regarding the financially qualified patient and charity care application, including the following: