National Health Insurance Act Article 70

Upon the occurrence of an incident under coverage to the beneficiary, the contracted medical care institutions shall provide proper medical service based on their specialties and facilities or assist in referral without any unreasonable refusal due to the status of the beneficiary.
中文原文 全民健康保險法第70條
保險醫事服務機構於保險對象發生保險事故時,應依專長及設備提供適當醫療服務或協助其轉診,不得無故拒絕其以保險對象身分就醫。

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