The medical director shall be a physician who is certified, or is an active candidate for certification, by the American Board of Internal Medicine, and who has had at least one year of formal training in chronic renal disease patient care or at least two years of experience in such care. In either case, a significant portion of the required time shall have been spent working in a dialysis unit that provides maintenance dialysis to patients with chronic renal disease.
105 CMR, § 145.121