(a) The department may collect prospective rebates from drug manufacturers for payment to pharmacies pursuant to Section 130405.
(b) The department shall notify a drug manufacturer of all instances in which it has paid a rebate amount pursuant to Section 130405 with respect to one of the manufacturer’s drugs.
(c) A drug manufacturer shall pay the department the amount of any rebate of which the drug manufacturer is notified pursuant to subdivision (b) that exceeds the amount collected by the department pursuant to subdivision (a).