Physical Therapists Act Article 25

A physical therapy clinic shall appoint persons to safe-keep records of physical therapy, diagnosis and written directions issued by physicians in an appropriate place for at least ten (10) years.
中文原文 物理治療師法第25條
物理治療所對於物理治療紀錄、醫師開具之診斷及書面指示,應指定適當場所及人員保管,並至少保存十年。

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