Enforcement Rules of the National Health Insurance Act Article 40

For change or correction of the beneficiary’s name, birthday, National ID Number, or Resident Certificate Uniformed ID Number, or change of postal address or household registration address declared by the insured in Category 6, the group insurance applicant shall fill out a copy of item change application, and hand in the application to the Insurer along with relevant certification.
中文原文 全民健康保險法施行細則第40條
保險對象之姓名、出生年月日、國民身分證統一編號或居留證統一證號變更或錯誤、第六類被保險人申報之通訊地址或戶籍地址變更時,投保單位應即填具保險對象變更事項申報表一份,連同有關證件送交保險人。

English translation for reference only; the Chinese text prevails. Not legal advice.