The claim
医療従事者はマイナ保険証にしない人が大多数?
Original review summary
The review found no data supporting the claim that most medical workers do not register for the My Number health insurance card. A survey of doctors on the medical-professionals-only site m3.com found that more than half of respondents had registered their cards as health insurance cards. However, the review cautioned that the survey does not represent all medical workers.[S1]
Additional context
The m3.com survey was conducted on November 1–2, 2024, among 695 physician members; among cardholders, 72.2% said they had registered their cards as health insurance cards. [S1]
The review states that health insurance cards stopped being newly issued from December 2, 2025, while existing cards could be used until their expiry, for up to one year. [S1]
Research date:
Sources and attribution
- [S1] 日本ファクトチェックセンター original review
Original review · Retrieved October 16, 2026