Dr. Masashi Koto
| Area | Chiba Prefecture |
| Medical institution affiliation | National Institutes for Quantum Science and Technology QST Hospital https://www.nirs.qst.go.jp/hospital/aboutus/doctors.php |
| Medical specialties | radiotherapy department |
| Medical expertise | radiation oncology, head and neck tumours, heavy particle therapy |
| Graduated University | Tohoku University |
