Our Doctors & Surgical Team

画像 ~ ~ 銀座すみれの花クリニック

Toshiya Yokoyama, M.D., Ph.D.

Director, Ginza Sumire no Hana Clinic

Drawing on decades of experience in university hospitals and in the fields of plastic, reconstructive, and aesthetic surgery, Dr. Saiya Yokoyama is committed to providing each patient with highly specialized, carefully considered medical care.

He believes that every treatment should begin with a thorough understanding of the patient’s concerns. During consultation, he takes the time to assess each individual case and discuss treatment options based on anatomy, safety, and long-term outcomes.

Professional Background

1965
Born in Kanazawa, Ishikawa Prefecture, Japan.

1991
Graduated from the University of Occupational and Environmental Health, Japan.

1998
Completed postgraduate studies at Showa University and continued his clinical and academic career at a university-affiliated hospital.

2006–2007
Worked at Hôpital Saint-Louis in Paris, France, and studied and conducted research in microsurgery at Paris Diderot University (Paris 7).

2008
Appointed Director and Lecturer in Plastic and Reconstructive Surgery at Showa University Hospital.

2012
Appointed Director of a plastic and aesthetic surgery clinic in Tokyo.

2014
Founded Ginza Sumire no Hana Clinic.

2015
Published Keiseigeka wa Kando Geka (形成外科は感動外科), presented in English as Plastic Surgery Changes Lives, a book introducing the general public to the role and significance of plastic and reconstructive surgery.

2024
Established S&T Medical Corporation.

Board Certifications and Professional Qualifications

Japan Society of Plastic and Reconstructive Surgery (JSPRS)

  • Board-Certified Specialist in Plastic and Reconstructive Surgery
  • Certified Supervising Physician in Plastic and Reconstructive Surgery
  • Certified Supervising Physician in Aesthetic Surgery
  • Certified Supervising Physician in Wound Surgery
  • Board-Certified Specialist and Supervising Physician in Skin Tumor Surgery

Japan Society of Aesthetic Plastic Surgery (JSAPS)

  • Board-Certified Specialist in Aesthetic Plastic Surgery
  • Councilor

Additional Qualifications

  • Licensed Anesthesiology Practitioner, Ministry of Health, Labour and Welfare, Japan
  • Certified Clinical Instructor for Foreign Medical Practitioners (English), Ministry of Health, Labour and Welfare, Japan
  • Permanent Diploma in Microsurgery, Paris Diderot University (Paris 7), France

Professional Memberships

  • Japan Society of Plastic and Reconstructive Surgery (JSPRS)
  • Japan Society of Aesthetic Plastic Surgery (JSAPS) — Councilor
  • Société Française de Chirurgie Esthétique (SFCE)
  • The Japanese Society for Wound Healing (JSWH)

Academic Appointments

  • Adjunct Lecturer, Department of Plastic and Reconstructive Surgery, Chiba University
  • Concurrent Lecturer, Showa Medical University

Publications

Yokoyama, T. “La microchirurgie au Japon.” In Michel A. Germain (ed.), La microchirurgie dans le monde. Paris: Éditions Glyphe, 2012, pp. 105–130.

Plastic Surgery Changes Lives

In 2015, Dr. Saiya Yokoyama published Keiseigeka wa Kando Geka (形成外科は感動外科), a book written to introduce the general public to the true scope and meaning of plastic and reconstructive surgery.

Drawing on patients and experiences from his career as a plastic surgeon, Dr. Yokoyama explores a remarkably broad range of medicine—from reconstruction following serious accidents and burns to cancer reconstruction, pediatric care, ptosis, aesthetic surgery, and complications caused by foreign materials.

Yet the book is ultimately about more than surgical procedures.

Its Japanese title, Keiseigeka wa Kando Geka, expresses Dr. Yokoyama’s belief that plastic surgery can be “surgery that moves the heart.” Restoring a part of the body damaged by injury or disease, improving function, or resolving a concern that has burdened someone for years can bring changes that extend far beyond physical appearance. Such moments can deeply affect not only patients and their families, but also the physicians who care for them.

For the English title, we express this idea as Plastic Surgery Changes Lives.

Throughout the book, Dr. Yokoyama also reflects on the responsibilities of being a physician and on what it means to care for the patient as a whole person. This philosophy—technical precision combined with careful judgment, humility, and sincerity toward every patient—continues to guide the medical care at Ginza Sumire no Hana Clinic today.

Additional publications, books, and articles by Dr. Yokoyama are available on the Ginza Sumire no Hana Clinic website.

Revision Surgery Team

Our revision surgery team includes experienced specialists in plastic surgery and anesthesiology who work together to provide safe and carefully coordinated surgical care.

Shinsuke Takaki, M.D.
Board-Certified Plastic Surgeon
Visiting Plastic Surgeon

Kenji Toi, M.D.
Board-Certified Anesthesiologist
Visiting Anesthesiologist

Terumi Nonaka, M.D.
Board-Certified Anesthesiologist
Visiting Anesthesiologist

Kazunori Oku, M.D.
Board-Certified Anesthesiologist
Visiting Anesthesiologist