Introduction: The e-learning system applied by the co-assistant doctors in Faculty of Medicine of Udayana University is Online Academic Service for E-Learning (OASE)^[1]. This system integrates academic activities, enabling co-assistant doctors to access integrated learning resources^[2]. As time goes by, e-learning necessitates further evaluations to improve its performance in supporting co-assistant doctors education to achieve optimal clinical education quality^[3]. 

Methods: The google form survey method is used that is distributed to 118 co assistant doctors from class of 2018-2023 who are undergoing clinical education at Udayana University Hospital. The study design used is correlational research with a cross-sectional approach.

Results: The survey shows that 83,9% of co-assistant doctors are satisfied with the implementation of e-learning for providing materials, quizzes and assignments. However, 48.3% of them said that not all clinical stations provided it. As many as 44.1% of co-assistant doctors have difficulty accessing e-learning due to signal limitations, and 42.4% of them experience problems with the system. Buffering has hindered the learning process of 40.7% of them and 16.1% stated that the e-learning system was complicated. Many co-assistant doctors experiencing difficulty logging in and complain about the system’s slowness. The survey shows that 42.4% of co-assistant doctors agree that nonoptimal e-learning system can have a bad impact on their understanding.

Conclusion: The implementation of OASE as e-learning is still not optimal in all clinical stations, there are still many stations that have not implemented it. OASE system optimization is needed to support co-assistant doctors learning and improve their education quality.

Keywords: Clinical Station, Co-Assistant Doctors, E-learning, OASE