Dr. Masayuki Otsuka
| Area | Chiba Prefecture |
| Medical institution affiliation | Chiba University Hospital https://www.ho.chiba-u.ac.jp/hosp/section/kantansui/index.html |
| Medical specialties | hepatobiliary and pancreatic surgery |
| Medical expertise | liver, biliary and pancreatic surgery, liver transplantation |
| Graduated University | Chiba University |
