Dietitians Act Article 21

A nutrition counseling institution shall post or display its institution operating permit, fee charging, and the dietitian certificate(s) of the dietitian(s) under its employment at an easily visible place of the institution.
中文原文 營養師法第21條
營養諮詢機構應將其開業執照、收費標準及所屬營養師之營養師證書,懸掛或揭示於明顯處所。

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