Dietitians Act Article 9

A practicing dietitian should join the dietitian association in the locality of practice.The dietitian association is not entitled to refuse any membership application filed by an applicant possessing the eligible qualification.
中文原文 營養師法第9條
營養師執業,應加入所在地營養師公會。
營養師公會不得拒絕具有會員資格者入會。

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