The quality of services carried out by nursing staff can be assessed as an indicator of good or bad service quality in hospitals, so nurses are required to have good knowledge, skills and ethics and professional discipline, to carry out their daily duties professionally. Based on data from the American Nurses Association (ANA) (2017) regarding the implementation of the Nursing Committee (nursing committee) in hospitals, 88% can increase the professionalism of nursing staff to improve the quality of a hospital. This value must be achieved during the Covid pandemic. Respondents in this study were nurses at the Prima Medika General Hospital Denpasar, carried out during the Covid period. The number of respondents in this study were 168 respondents using the Nonprobability technique, namely the saturated sample or often called total sampling. This research uses Structural Equation Modeling (SEM) analysis of SmartPls 3.2.8 program. The results of this study indicate that: 1)Credentials Committee, Professional Quality Committee, and The Committee of Professional Ethics and Discipline has a positive and significant impact on the professionalism of nurses, 2)Credentials Committee, Professional Quality Committee, and Professional Ethics and Discipline Committee has a positive and significant effect on nurse performance, and 3)Nurse professionalism has a positive and significant effect on nurse performance.