I moved in from another ward, do I need to report to National Health Insurance? Also, which ward office should I go to?

You will need to change the National Health Insurance Address.
Please notify Insurance and Pension Division National Health Insurance Section, the ward office of your ward within 14 days.
If you receive a new insurance card by mail, it will take a few days to receive it. If you plan to be consulted immediately, you will be issued a “medical certificate” as a substitute for your insurance card, so please apply at the ward office.

Note) Please come to National Health Insurance Section after completing the procedures for transferring your resident registration.

Insurance and Pension Division National Health Insurance Section, ward office in your ward

・National Health Insurance Insured Card of the ward before moving in
・Identity verification documents (My number card, license, passport, etc.) of the person to be notified

What is necessary for the procedure (don't forget to report in such a case)
Contact (Ward Office Insurance and Pension Division)