National Health Insurance Act Article 71

Contracted medical care institutions shall give the beneficiary a prescription after treatment, which shall be according to the contracted medical care institutions’ dispensation, lab tests, and diagnostic examinations.The beneficiary’s drug prescription from ambulatory treatment and major lab test items shall be stored in the NHI Card.
中文原文 全民健康保險法第71條
保險醫事服務機構於診療保險對象後,應交付處方予保險對象,於符合規定之保險醫事服務機構調劑、檢驗、檢查或處置。
保險對象門診診療之藥品處方及重大檢驗項目,應存放於健保卡內。

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