Dr. Masakazu Toi
| Area | Tokyo Metropolis |
| Medical institution affiliation | Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital https://www.tmhp.jp/komagome/section/geka/gekanyusen/doctor.html |
| Medical specialties | breast surgery |
| Medical expertise | diagnosis and treatment of breast cancer |
| Graduated University | Hiroshima University |
