Open registrations:
| Event name | Event date | Event location |
| Proljetni simpozij HDED HLZ | 25.03.2021. | Zagreb |
| 14. hrvatski onkološki kongres | 22.04.2021. | Virtualni kongres |
| XII Kongres Društva nastavnika opće/obiteljske medicine (DNOOM) | 22.04.2021. | Zagreb |
| TORAKS 2021 | 19.05.2021. | Zagreb |
| 11. Internistički kongres u Opatiji | 04.06.2021. | Opatija, Croatia |
| 18th Congress of the International Society for Folk Narrative Research | 05.09.2021. | Virtual congress |
| European Cleveland Clinic Endocrinology and Diabetes update | 30.09.2021. | Split, Croatia |
| 13. kongres Hrvatskog društva za internističku onkologiju | 14.10.2021. | Šibenik |