National Health Insurance Act Article 79

The Insurer may require relevant agencies to provide the necessary information it needs to carry out the business of this Insurance, which the agencies may not refuse.The information obtained by the Insurer in accordance with the preceding paragraph shall be handled responsibly and prudently. The storage and use of relevant information shall be carried out according to the Personal Data Protection Act.
中文原文 全民健康保險法第79條
保險人為辦理本保險業務所需之必要資料,得請求相關機關提供之;各該機關不得拒絕。
保險人依前項規定所取得之資料,應盡善良管理人之注意義務;相關資料之保存、利用等事項,應依個人資料保護法之規定為之。

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