Cal. Health and Safety Code § 129052

A pledge by or to the department of, or the grant to the department of a security interest in, revenues, moneys, accounts, accounts receivable, contract rights, general intangibles, documents, instruments, chattel paper, and other rights to payment of whatever kind made by or to the department pursuant to the authority granted in this chapter shall be valid and binding from the time the pledge is made for the benefit of pledgees and successors thereto. The revenues, moneys, accounts, accounts receivable, contract rights, general intangibles, documents, instruments, chattel paper, and other rights to payment of whatever kind pledged by or to the department or its assignees shall immediately be subject to the lien of the pledge without physical delivery or further act. The lien of such pledge shall be valid and binding against all parties, irrespective of whether the parties have notice of the lien. The indenture, trust agreement, resolution, or another instrument by which such pledge is created need not be recorded or the security interest otherwise perfected.