Dr. Naokata Sumitomo
| Area | Saitama Prefecture |
| Medical institution affiliation | Saitama Medical University International Medical Center https://www.international.saitama-med.ac.jp/detail2/d2-05/ |
| Medical specialties | paediatric cardiology |
| Medical expertise | catheter ablation, treatment of arrhythmias (paediatric and adult congenital heart disease) |
| Graduated University |
