Hospital
View Hospital →
Ginza Phoenix Clinic
Japan
About Dr. Hisashi Nagai
Dr. Hisashi Nagai’s career is one of the most remarkable paths in Japanese medicine. Originally a student at the Faculty of Law at Keio University, he switched to medicine and earned his MD and PhD from the University of Tokyo, becoming a leading expert in tumour immunology and cancer immune cell therapy. His main research at the University of Tokyo Graduate School of Medicine, supported by a fellowship from the Ministry of Education, advanced knowledge of how macrophages regulate pulmonary microcirculation. His findings were published in international journals after a major multi institutional study conducted at Japan’s SPring 8 synchrotron radiation facility. As Visiting Associate Professor at Tokai University Graduate School of Human Environmental Studies, he applies strict academic standards to the challenge of using the immune system to treat advanced cancer. In 2021, he became Director of Ginza Phoenix Clinic, turning decades of research into accessible, practical treatments for patients. He developed the clinic’s patent pending NKT cell culture technology (application number 2025‑95087), demonstrating both his ongoing scientific contributions and commitment to expanding immune cell therapy.
Education & Certifications
Education
- Graduate: Kanazawa Medical University School of Medicine (2003)
- Internal Medicine Residency: The University of Tokyo Hospital (2003)
- Research Medic: First Department of Internal Medicine, Tokyo Women’s Medical University (2004)
- Assistant Professor: Graduate School of Medicine, The University of Tokyo (2010)
- Ph.D. in Medicine: The University of Tokyo (2015)
Certifications
- M.D. and Ph.D.: The University of Tokyo
- Visiting Associate Professor: Graduate School of Human Environmental Studies, Tokai University (since 2018)
- Former Assistant Professor: University of Tokyo Graduate School of Medicine
- Ministry of Education Research Fellow (University of Tokyo)
- Pending Patent Holder: NKT cell culture technology (特願2025-95087)
Awards & Recognition
Multi-institutional research at SPring-8 synchrotron radiation facility (National Cerebral and Cardiovascular Center, Tokai University – 8 other institutions)
Publications in international medical journals on macrophage-mediated pulmonary microcirculation in sleep apnea
Creator of pending-patent NKT triple immune cell therapy
Hospital Affiliation
· Next Step
Book a Consultation with Dr. Hisashi Nagai
Our team will connect you with the right specialist for your needs.
