Chugai-Igakusha
Japanese medical publisher founded in 1952, producing clinical, educational and research books and journals for healthcare professionals and students.
Last updated September 28, 2026
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Overview
Chugai-Igakusha Co., Ltd. (株式会社中外医学社) is a Japanese publisher specialising in medical and healthcare literature. It was founded in 1952 in Tokyo by Michio Aoki as the book-publishing arm of Nihon Iji Shinposha, the medical newspaper company established by Hikotaro Umezawa. The company's stated purpose was to disseminate medical and healthcare knowledge widely in Japan and abroad, and it has remained focused on that mission for more than seven decades. The publisher's catalogue spans basic medical sciences through every major clinical specialty, serving medical students, residents, practising physicians, pharmacists, nurses and other healthcare professionals. Its output includes single-topic monographs, clinical handbooks, atlases, examination-preparation titles, statistical and research-methods guides, and periodicals such as the journal J-IDEO. Recent catalogue highlights include revised editions of works on depression, cardiopulmonary bypass, bone-marrow diagnostics, TAVI procedures, blood-disease therapeutics and clinical statistics, as well as practical titles on clinic management, ChatGPT for physicians and patient follow-up for pharmacists. Chugai-Igakusha has been based in Yaraicho, Shinjuku-ku, Tokyo, since 1964, a short walk from Kagurazaka Station. The company is led by President Shigeru Aoki, who succeeded founder Michio Aoki in 2000. It remains a privately held Japanese company and has embraced digital publishing, beginning the conversion of its backlist to e-books in 2011. Its long-running journals include Rinshoi (founded 1975) and Clinical Neuroscience (founded 1983).
History
Chugai-Igakusha traces its origins to Nihon Iji Shinposha, a medical newspaper company founded in 1921 by Hikotaro Umezawa. Umezawa, having achieved success with the newspaper, sought to expand into book publishing. In 1952, Michio Aoki established Chugai-Igakusha Co., Ltd. as the book-publishing division of Nihon Iji Shinposha, based in Kobikicho, Chuo-ku, Tokyo, with Aoki serving as representative director. The company's founding purpose was to disseminate knowledge related to medicine and healthcare widely in Japan and abroad. In 1964 the company relocated to Yaraicho, Shinjuku-ku, Tokyo, where it remains headquartered today. The 1970s and 1980s saw the launch of several long-running journals: Rinshoi (臨床医) in 1975 and Clinical Neuroscience in 1983. Over the decades the publisher built an extensive catalogue of series and single-volume works, including the Q&A collections (1955, 1961), Chugai Igaku Sosho (1963), General Practitioner Sensho (1968), Diagnostic Exercises (1970), the SAS series (1977), the National Exam series (1980), the Emergency Treatment series (1984), Annual Review volumes for respiratory, circulatory, neurological, digestive, endocrine/metabolic and hematological fields (1985), Hematology Highlights (1992), Immunology Highlights (1994) and textbooks for allied health professionals (2004). In 2000, founder Michio Aoki became Representative Director and Chairman, and Shigeru Aoki assumed the role of Representative Director and President. Around this time, reflecting changes in the medical publishing industry, the company began publishing more books aimed at healthcare professionals. In 2011, Chugai-Igakusha started digitising its backlist, converting previously published books into e-books. The company continues to publish new editions and new titles across clinical medicine, nursing, pharmacy and allied health, and remains a privately held Japanese publisher.
- 2012
Publishes Color Atlas of Spinal and Spinal Cord Surgery (カラーアトラス脊椎・脊髄外科).
- 2011
Begins digitising its backlist into e-books.
- 2004
Launches the specialist basic-field textbooks for allied health professionals (コメディカルのための専門基礎分野テキスト).
- 2000
Founder Michio Aoki becomes Representative Director and Chairman; Shigeru Aoki becomes Representative Director and President.
- 1994
Launches Immunology Highlights (各领域).
- 1992
Launches Hematology Highlights (各领域).
- 1985
Launches Annual Review volumes for respiratory, circulatory, neurological, digestive, endocrine/metabolic and hematological fields.
- 1984
Launches the Emergency Treatment series.
- 1983
Launches the journal Clinical Neuroscience.
- 1980
Launches the National Exam series (国試からみた各科シリーズ).
Products and positioning
A specialist medical publisher dedicated to trustworthy, up-to-date clinical, educational and research information for healthcare professionals and students.
J-IDEO
Rinshoi (臨床医)
Clinical Neuroscience
Bone-marrow disease diagnostic atlas (骨髄疾患診断アトラス)
TAVI technical handbook (TAVIテクニカルハンドブック)
EZR statistics guide (EZRでやさしく学ぶ統計学)
Depression: from diagnosis and treatment to understanding pathophysiology (うつ病――診断・治療から病態の理解まで)
Cardiopulmonary bypass handbook (人工心肺ハンドブック)
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