If you notice while entering a new patient in Medisoft that the city that comes up for the ZIP code entered is incorrect, you can manually change it in that patient entry screen before saving, and that new city will be associated with that ZIP code for all patients created from that point forward once you save the new patient. Unfortunately, however, the patient list will not be updated based on that new association, so existing patients that had the wrong city name will still be wrong. Correcting the existing patients is possible but would require some database work in Advantage SQL; please feel free to call us for more information if you're interested in having us do this for you.