# 医師法 / Medical Practitioners' Act — 第一条 (Supplementary Provisions, Article 1)

- Law: 医師法 (Medical Practitioners' Act), 昭和二十三年法律第二百一号
- English title "Medical Practitioners' Act": Ministry of Justice translation
- Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say.
- Provision: 第一条 (Supplementary Provisions, Article 1)（施行期日） — address `suppl-4301-79/art-1`
- Text in force since: 2026-05-21
- URL (the page that opens at this provision): https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-1
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-1
- Every provision below carries its address and both URLs on the line under it.
- Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below.

Only the Japanese as published by the government has legal effect; the text
below is a copy of it. Every English rendering below is a translation and
says which kind: the Ministry of Justice's translation, or this
site's machine translation, whose model and date the Sources list names.
They are never merged and never substituted for one another.

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### 第一条（施行期日） — Effective Date
<sup>caption: machine translation, not official</sup>
<sup>suppl-4301-79/art-1 · https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-1 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-1</sup>

**第一項**  この法律は、平成三十一年四月一日から施行する。ただし、次の各号に掲げる規定は、当該各号に定める日から施行する。
<sup>suppl-4301-79/art-1/par-1 · https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-1/par-1 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-1/par-1</sup>
This Act comes into effect on April 1, 2019; provided, however, that the provisions set forth in the following items come into effect as of the days specified in those items.
<sup>machine translation, not official</sup>

  **一**  第一条及び第四条の規定並びに次条から附則第四条まで並びに附則第九条及び第十五条の規定　公布の日
  <sup>suppl-4301-79/art-1/par-1/item-1 · https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-1/par-1/item-1 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-1/par-1/item-1</sup>
  the provisions of Articles 1 and 4, the provisions of the following Article through Article 4 of the Supplementary Provisions, and the provisions of Articles 9 and 15 of the Supplementary Provisions: the date of promulgation.
  <sup>machine translation, not official</sup>

  **二**  第三条及び第五条の規定並びに附則第六条から第八条まで、第十一条及び第十二条の規定　令和二年四月一日
  <sup>suppl-4301-79/art-1/par-1/item-2 · https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-1/par-1/item-2 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-1/par-1/item-2</sup>
  the provisions of Articles 3 and 5, and the provisions of Articles 6 through 8, Article 11 and Article 12 of the Supplementary Provisions: April 1, 2020.
  <sup>machine translation, not official</sup>

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## Cites
- suppl-4301-79/art-1/par-1/item-1: 次条 → 医師法 附則第二条 (Supplementary Provisions, Article 2), suppl-4301-79/art-2 — https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-2 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-2
- suppl-4301-79/art-1/par-1/item-1: 第十五条 → 医師法 附則第十五条 (Supplementary Provisions, Article 15), suppl-4301-79/art-15 — https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-15 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-15
- suppl-4301-79/art-1/par-1/item-2: 附則第六条から第八条まで → 医師法 附則第七条 (Supplementary Provisions, Article 7), suppl-4301-79/art-7 — https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-7 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-7
- suppl-4301-79/art-1/par-1/item-2: 附則第六条から第八条まで → 医師法 附則第八条 (Supplementary Provisions, Article 8), suppl-4301-79/art-8 — https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-8 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-8

## Cited by

4 provisions cite this one. No official source publishes this direction.

- 医師法 附則第二条第三項（検討） — https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-2/par-3 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-2/par-3
- 医師法 附則第七条第一項（医師法の一部改正に伴う経過措置） — https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-7/par-1 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-7/par-1
- 医師法 附則第八条第一項 — https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-8/par-1 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-8/par-1
- 医師法 附則第八条第二項 — https://japanlaw.org/en/medical-practitioners-act/suppl-4301-79/art-8/par-2 · https://japanlaw.org/l/323AC0000000201/suppl-4301-79/art-8/par-2

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## Sources

- e-Gov 法令検索, Digital Agency (デジタル庁) — 医師法 — the text in force from 2026-05-21 (https://laws.e-gov.go.jp/law/323AC0000000201/20260521_505AC0000000063), retrieved 2026-10-09
- Japanese Law Translation Database System, Ministry of Justice (法務省) — Medical Practitioners' Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/3992/tb), retrieved 2026-10-09
- claude-sonnet-5-5 — Machine translation, batch medical-practitioners-act-20261009T095312-007, translated 2026-10-09
- This site's parser, version 165 — 医師法 — structure, counts, cross-references and defined terms, computed 2026-10-09