This study aims to evaluate and analyze the empirical impact of Public Service Motivation (PSM), job satisfaction, and organizational commitment on healthcare service quality at Avicenna Hospital, Bireuen Regency. Employing a quantitative approach with a causal explanatory research design, this study surveyed the entire nursing staff population comprising 102 registered nurses through a saturated sampling (census) technique. Primary data were gathered via structured questionnaires with a 5-point Likert scale and subjected to Multiple Linear Regression Analysis using SPSS version 26.0. Partial hypothesis testing demonstrated that Public Service Motivation exerts a positive and significant effect on healthcare service quality (tcount = 3.142 > ttable = 1.660; p = 0.002 < 0.05). Job satisfaction displays a dominant positive and significant impact (tcount = 4.060 > ttable = 1.660; p = 0.000 < 0.05). Organizational commitment also yields a positive and significant contribution (tcount = 2.190 > ttable = 1.660; p = 0.031 < 0.05). Simultaneously, all three independent variables significantly drive service quality improvements, yielding Fcount = 31.589 > Ftable = 2.69 (p = 0.000 < 0.05). The correlation coefficient (R = 0.701) signifies a strong association, while the coefficient of determination (R2 = 0.492) indicates that 49.2% of healthcare service quality variance is accounted for by these three factors, with the remaining 50.8% governed by unexamined external variables. Strategic policies must focus on strengthening intrinsic public values, improving work environment satisfaction, and fostering organizational identification.
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