The purpose of this study was to establish the influence of internal appraisal on the organizational performance of national health non-governmental organizations (NGOs) in Kenya. The study utilized positivism research philosophy and cross-sectional research design. The target population constituted 564 program directors and chief executive officers (CEOs) of 282 national NGOs registered with the NGO coordination board. Stratified random sampling technique was used to select a sample size of234, of which 227 responded to the questionnaire. Structured questionnaire was used for data collection, while descriptive and inferential statistical techniques were used for data analysis.
Structural equation modelling (SEM) was applied to test the study hypothesis. Statistical package for social sciences (SPSS) Version 26 and Analysis of Moment Structures (AMOS) version 26 software were used for the analysis. The findings showed that the national health NGOs engaged in internal appraisal of leadership (M = 3.48, SD = 0.407), project development (M = 3.22, SD = 0.365) and funding (M = 3.20, SD = 0.397). In addition, it was established that conducting internal appraisal has a significant positive influence on the organizational performance of national health NGOs in Kenya(mn= 0.41,$ = 0.643,km = 6.578, 9 < 0.05). The study concluded that conducting internal appraisal is essential to enable national health NGOs in Kenya to accomplish their organizational performance objectives. This paper makes recommendations to the national health NGOs to regularly appraise internal strategic elements and continually analyze their organizations’ capacity to take advantage of current opportunities while mitigating threats.