1981
Graduated Jikei University School of Medicine
Completed undergraduate medical training at Jikei University School of Medicine (Tokyo) and joined the department of surgery at its affiliated hospital.
CHAIRMAN & DIRECTOR
Dr. Yoshinori Nagumo
南雲 吉則 · Chairman, Tokyo Nagumo Clinic
Founder and chairman of Tokyo Nagumo Clinic (Nagumo-kai Medical Corporation). A first-generation Japanese breast-surgery specialist, he independently founded Nagumo Aesthetic Surgery in 1988 in Ueno, Tokyo, and has combined 30+ years of clinical practice with sustained media and authorship activity to become one of the recognized public voices in Japan’s general-audience discussion of breast medicine and preventive care. He visits the Korea branch, Umnagumo Plastic Surgery, on a recurring basis for consultations and clinical oversight.
CAREER
Career Highlights
1988
Founded Nagumo Aesthetic Surgery
Independently founded the breast-specialty "Nagumo Aesthetic Surgery" clinic in Ueno, Tokyo — the starting point of Japan’s single-specialty breast surgery system.
1990
Nagumo-kai Medical Corporation established
Earned medical-corporation accreditation; Nagumo Clinic (Nishi-Gotanda, Tokyo) established under the Nagumo-kai Medical Corporation.
1995
Earned Breast Specialist credential
Earned Japan’s Breast Specialist credential alongside the opening of the Fukuoka clinic.
2000
Appointed Dr. Eom as first Korean Chief Surgeon
Appointed Dr. Soonchan Eom as Chief Surgeon at Tokyo Nagumo — the first Korean physician ever to hold the role — laying the personnel foundation for what would later become the Korea branch.
2003
Korea branch Umnagumo opens
Dr. Eom opens Umnagumo Plastic Surgery in Nonhyeon-dong, Gangnam, Seoul, as the Korea branch of Tokyo Nagumo.
2014
Tokyo Breast Reconstruction Center building
Tokyo clinic relocated to a dedicated Breast Reconstruction Center building in Sanbancho, Chiyoda-ku — strengthening integration of mammary, aesthetic, and reconstructive surgery.
AUTHORITY SIGNALS
Authority Signals in Japan
MEDIA APPEARANCE
Recurring features in major Japanese weeklies
Regular interviews and contributions in Shukan Jitsuwa, Shukan Post, Josei Jishin, and other major Japanese weeklies and women’s magazines on topics of breast medicine, healthy aging, and prevention — one of the recognized public voices in Japan’s general-audience discussion of breast medicine.
YOUTUBE CHANNEL
Dr. Nagumo Nutrition Clinic Channel
YouTube channel "Dr. Nagumo no Eiyou Gairai" (Dr. Nagumo Nutrition Clinic), hosted by Chairman Nagumo himself — general-audience medical content on cancer prevention, chronic-disease management, and healthy aging through diet and lifestyle.
BESTSELLING AUTHOR
Bestselling medical author
Author of numerous bestsellers including "50-sai wo Koetemo 30-dai ni Mieru Ikikata" (How to Look 30 in Your 50s) — disseminating messages on breast health, nutrition, and preventive medicine to general readers across Japan.
HOMETOWN AMBASSADOR
Hometown Ambassador of Ikeda-cho, Nagano
Officially appointed as Hometown Ambassador (Furusato Taishi) of Ikeda-cho in Nagano Prefecture. Sustained civic and regional-media presence operates as an authority signal beyond purely clinical contexts.
SCOPE OF PRACTICE
Scope of Practice — Integrated Single-Specialty Breast Care
- Breast Augmentation: silicone implants, hyaluronic acid, autologous fat, Mia Femtech™, Preservé™
- Breast Reduction & Mastopexy
- Breast Reconstruction: immediate post-mastectomy reconstruction, autologous tissue, implant-based
- Mammary Surgery: breast cancer screening, oncologic surgery, pharmacotherapy, second-opinion consultations
- Gender Identity Disorder (GID) Integrated Care
- Preventive Medicine & Nutritional Counseling
KOREA BRANCH CONNECTION
Connection to the Korea Branch
In 2000, Chairman Nagumo appointed Dr. Soonchan Eom as the first Korean Chief Surgeon at Tokyo Nagumo Clinic. After Dr. Eom opened Umnagumo Plastic Surgery as the Korea branch in 2003, Chairman Nagumo has continued to visit the Korea branch on a recurring basis for consultations, clinical conferences, and the sharing of new-technology validation materials.
See the full medical lineage pageREFERENCES
Career, media, and activity information on this page is drawn from the official Tokyo Nagumo Clinic site at nagumo.or.jp and from publicly available Japanese-language materials (weeklies, books, YouTube content, broadcast appearances). For more detail, see the official site directly.