Notwithstanding any other provision of this Section, independent practice associations and physician-hospital organizations shall make all other payments for health services within 30 days after receipt of due proof of loss. Independent practice associations and physician-hospital organizations shall notify the insured, insured's assignee, health care professional, or health care facility of any failure to provide sufficient documentation for a due proof of loss within 30 days after receipt of the claim for health services.
Failure to pay within the required time period shall entitle the payee to interest at the rate of 9% per year from the date the payment is due to the date of the late payment, provided that interest amounting to less than $1 need not be paid. Any required interest payments shall be made within 30 days after the payment.
215 ILCS 5/368a