The Act Governing Preferential Treatment for Recalled Reservists Article 5

Paragraph 1Within one year after the day when a reservist is dismissed from a recall, he shall enjoy the favor of exemption from registration fee at medical institutions of the armed forces if he carries his National Health Insurance Certificate and Certificate of Dismissal from A Recall.
中文原文 後備軍人召集優待條例第5條
後備軍人自當年度解除召集之日起一年內,持全民健康保險憑證及解除召集證明書至國軍醫療院所就醫,得享有免掛號費之優惠。

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