Abstract: For a revisit patient, a first terminal reads a patient identification card. The first terminal reads a health insurance card if it is required, and compares health insurance card data with reference data. If there is a difference, the first terminal prompts the user to go to a window for verification of the health insurance card. A second terminal displays a different part of the health insurance card data that is different from the reference data, and receives an input of data corresponding to the different part. The data input via the second terminal is registered in health insurance card database. A third terminal obtains a patient list and displays the list so that the patient is visually different from another patient.