When a person has health benefit coverage to provide payment for care or treatment rendered by a health care provider and the person has notified the health care provider of coverage within thirty days after the date the care or treatment was rendered, and if the health coverage plan, as defined in section 10-16-102(34), C.R.S., pays only a portion of the debt, prior to the assignment of the debt to a licensed collection agency, the health care provider shall mail written notice to the last-known address of the person responsible for payment of the debt at least thirty days before any collection activity on any amount due and owing the health care provider.