The taxonomy code display name is a more consumer-friendly name for the code.  The display name is a combination of the code name and the Level in which the code is nested, which more precisely identifies the code.  For example, Addiction Medicine is a physician subspecialty in Anesthesiology, Family Medicine, Internal Medicine, Preventive Medicine, and Psychiatry & Neurology.  Seeing “Addiction Medicine” does not identify the specialty of the physician, but the display name of “Addiction Medicine (Internal Medicine) Physician” clearly does.  In another example, the code “Radiology” could be confused with several codes, but “Radiology Chiropractor” specifies the exact provider.