Dr. Masao Hosokawa
| Area | Hokkaido Prefecture |
| Medical institution affiliation | Keiyukai Sapporo Hospital https://www.keiyukaisapporo.or.jp/ |
| Medical specialties | digestive surgery |
| Medical expertise | malignancies of the digestive organs in general (especially oesophageal cancer) |
| Graduated University | Hokkaido University |
