This study aims to examine the efficiency of Indonesian private health insurance following the application of Badan Penyelenggara Jaminan Sosial (BPJS), Indonesia's Social Insurance Administration Organization's regulations in 2014. This study compares the level of efficiency using data envelopment analysis (DEA) output orientation. Also, this study uses financial statements from 18 private insurance firms during the years 2009 to 2016. The results of this study show that, following the application of BJPS regulations, there have been no significant differences in firms' efficiency than before the application. In addition, we find that the efficiency of the joint venture health insurance companies decreased, while local health insurance efficiency increased during the observation period. This is because of a significant decline in investment returns for the joint venture health insurance companies in 2015. The results of this study are in accordance with the results of another study [16], where efficiency improvements only occur in small companies.