Welf. & Inst. Code, § 16958

If, after receiving payment from the account, a physician is reimbursed by a patient or a responsible third-party, the physician shall do one of the following:

(a) Notify the administering agency and the administering agency shall reduce the physician’s future payment of claims from the account . In the event there is not a subsequent submission of a claim for reimbursement within one year, the physician shall reimburse the account in an amount equal to the amount collected from the patient or third-party payor, but not more than the amount of reimbursement received from the account.

(b) Notify the administering agency of the payment and reimburse the account in an amount equal to the amount collected from the patient or third-party payor, but not more than the amount of the reimbursement received from the account for that patient’s care.