You can search for Japan medical institutions that accept non-Japanese residents in Japan and visitors from other countries. Please to use in the event of an emargency on the following site.

English
https://jmip.jme.or.jp/index.php?l=eng

Chinese
https://jmip.jme.or.jp/index.php?l=chn

Hangul
https://jmip.jme.or.jp/index.php?l=kor

Japanese
https://jmip.jme.or.jp/index.php?l=jpn