Physicians Act Article 23

In addition to the regulations in the previous article, a physician may not without reason reveal information about a patients condition or health information that he or she is aware of or in possession of as a result of his or her practice.
中文原文 醫師法第23條
醫師除依前條規定外,對於因業務知悉或持有他人病情或健康資訊,不得無故洩露。

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