# 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-5031-49/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-5031-49/art-1
- Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/323AC0000000201/suppl-5031-49/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-5031-49/art-1 · https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-1 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-1</sup>

**第一項**  この法律は、令和六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-5031-49/art-1/par-1 · https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-1/par-1 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-1/par-1</sup>
This Act comes into effect as of April 1, 2024; provided, however, that the provisions set forth in the following items come into effect as of the dates specified respectively in those items.
<sup>machine translation, not official</sup>

  **一**  第一条中医療法第百四条の改正規定及び第十四条の規定並びに次条並びに附則第三条、第十三条第二項、第十四条第二項、第十五条第二項及び第十八条の規定　公布の日
  <sup>suppl-5031-49/art-1/par-1/item-1 · https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-1/par-1/item-1 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-1/par-1/item-1</sup>
  the provisions amending Article 104 of the Medical Care Act in Article 1, the provisions of Article 14, the provisions of the following Article, and the provisions of Article 3, Article 13, paragraph (2), Article 14, paragraph (2), Article 15, paragraph (2) and Article 18 of the Supplementary Provisions: the date of promulgation;
  <sup>machine translation, not official</sup>

  **二**  略
  <sup>suppl-5031-49/art-1/par-1/item-2 · https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-1/par-1/item-2 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-1/par-1/item-2</sup>
  Omitted
  <sup>machine translation, not official</sup>

  **三**  第九条から第十二条までの規定並びに附則第十三条第一項及び第三項、第十四条第一項及び第三項、第十五条第一項及び第三項、第十六条、第十七条、第二十二条並びに第二十三条の規定　令和三年十月一日
  <sup>suppl-5031-49/art-1/par-1/item-3 · https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-1/par-1/item-3 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-1/par-1/item-3</sup>
  the provisions of Articles 9 through 12, and the provisions of Article 13, paragraphs (1) and (3), Article 14, paragraphs (1) and (3), Article 15, paragraphs (1) and (3), Articles 16, 17, 22 and 23 of the Supplementary Provisions: October 1, 2021;
  <sup>machine translation, not official</sup>

  **四及び五**  略
  <sup>suppl-5031-49/art-1/par-1/item-4-to-5 · https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-1/par-1/item-4-to-5 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-1/par-1/item-4-to-5</sup>
  Omitted
  <sup>machine translation, not official</sup>

  **六**  第五条の規定並びに附則第十九条の規定並びに附則第二十一条中沖縄の復帰に伴う特別措置に関する法律（昭和四十六年法律第百二十九号）第百条第三項及び同項の表の改正規定　令和五年四月一日
  <sup>suppl-5031-49/art-1/par-1/item-6 · https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-1/par-1/item-6 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-1/par-1/item-6</sup>
  the provisions of Article 5, the provisions of Article 19 of the Supplementary Provisions, and the provisions amending Article 100, paragraph (3) of the Act on Special Measures Incidental to Reversion of Okinawa (Act No. 129 of 1971) and the table of that paragraph in Article 21 of the Supplementary Provisions: April 1, 2023;
  <sup>machine translation, not official</sup>

  **七**  第三条中医療法第三十五条第一項第二号の改正規定（「第十一条第二号若しくは」を「第十一条第一項第二号若しくは」に改める部分に限る。）及び第六条の規定（医師法第十六条の十一第一項の改正規定を除く。）並びに附則第十一条、第二十条及び第二十七条の規定　令和七年四月一日
  <sup>suppl-5031-49/art-1/par-1/item-7 · https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-1/par-1/item-7 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-1/par-1/item-7</sup>
  the provisions amending Article 35, paragraph (1), item (ii) of the Medical Care Act in Article 3 (limited to the part replacing "Article 11, item (ii) or" with "Article 11, paragraph (1), item (ii) or"), the provisions of Article 6 (excluding the provisions amending Article 16-11, paragraph (1) of the Medical Practitioners' Act), and the provisions of Articles 11, 20 and 27 of the Supplementary Provisions: April 1, 2025.
  <sup>machine translation, not official</sup>

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## Cites
- suppl-5031-49/art-1/par-1/item-1: 次条 → 医師法 附則第二条 (Supplementary Provisions, Article 2), suppl-5031-49/art-2 — https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-2 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-2
- suppl-5031-49/art-1/par-1/item-1: 第十八条 → 医師法 附則第十八条 (Supplementary Provisions, Article 18), suppl-5031-49/art-18 — https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-18 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-18
- suppl-5031-49/art-1/par-1/item-3: 第十七条 → 医師法 附則第十七条 (Supplementary Provisions, Article 17), suppl-5031-49/art-17 — https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-17 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-17
- suppl-5031-49/art-1/par-1/item-7: 附則第十一条 → 医師法 附則第十一条 (Supplementary Provisions, Article 11), suppl-5031-49/art-11 — https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-11 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-11

## Cited by

1 provision cites this one. No official source publishes this direction.

- 医師法 附則第十七条第一項（罰則に関する経過措置） — https://japanlaw.org/en/medical-practitioners-act/suppl-5031-49/art-17/par-1 · https://japanlaw.org/l/323AC0000000201/suppl-5031-49/art-17/par-1

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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-20261009T095312-008, translated 2026-10-09
- This site's parser, version 165 — 医師法 — structure, counts, cross-references and defined terms, computed 2026-10-09