The corporation shall not in any way influence the subscriber in the subscriber’s free choice of hospital, physician, registered nurse practitioner, dentist or optometrist other than to limit its benefits to participating hospitals, physicians, dentists and optometrists. A contract between the corporation and a health care professional shall not contain a financial incentive plan that includes a specific payment made to or withheld from the health care professional as an inducement to deny, reduce, limit or delay medically necessary care that is covered by the contract with a subscriber or group of subscribers for a specific disease or condition. This section does not prohibit per diem or per case payments, diagnostic related grouping payments, or financial incentive plans, including capitation payments or shared risk arrangements, that are not connected to specific medical decisions relating to a subscriber or a group of subscribers for a specific disease or condition. Each corporation shall file with its annual report a written statement with the director that certifies that the corporation is in compliance with this subsection.