Rule 7.03 - MEDICAL OPINION WITNESSES(a) Charges for medical-legal services should be no higher than a physician's charges for other medical services and shall be computed having due regard for the time, effort and skill consumed. Such fees shall neither be so high as to prevent the patient from obtaining the physician's medical-legal services, nor so high as to give the appearance that the physician is attempting to capitalize on the patient's legal problem.(b) A physician, who has not been paid for treatment rendered to a patient, should still cooperate fully with the patient's attorney. The physician should not refuse nor slow down the submission of medical records or reports, participation in conferences with the attorneys, testimony at depositions or trial, or any other actions necessary to the resolution of the patient's legal claim. Similarly, the physician should not vary the fees normally charged for these services.Ill. R. Cir. Ct. Dupage Cnty. 7.03