Dr. Ohata Ken
| Area | Tokyo Metropolis |
| Medical institution affiliation | NTT Medical Center Tokyo https://www.nmct.ntt-east.co.jp/ |
| Medical specialties | gastroenterology |
| Medical expertise | diagnosis and treatment by gastrointestinal endoscopy (endoscopic treatment of early-stage oesophageal, gastric and colorectal cancer) |
| Graduated University | Nihon University |
