Rule 1. The department may, in the interest of utilization review and control, require identification of the attending, referring, or prescribing physician, dentist, or other practitioner on all invoices or claim adjustments submitted by medical or clinical laboratories, pharmacies, and hospitals enrolled in the medical assistance program. The attending, referring, or prescribing physician's, dentist's, or other practitioner's medical assistance program identification number or an alternative appropriate number which has been approved by the bureau of medical assistance shall be used to identify the attending, referring, or prescribing physician, dentist, or other practitioner.
Mich. Admin. Code R. 400.3351