This brief commentary reappraises the issue of emigration of physicians from developing countries to developed countries. A methodological framework is developed for assessing the impact of physician emigration on population health outcomes. The evidence from macro and micro studies suggest that developing countries especially in sub-Saharan Africa would benefit from regulating physician emigration because the loss of physicians can lower quality of healthcare services and lead to worse health outcomes. Further discussion is contained in an e-letter: http://jme.bmj.com/content/early/2013/05/30/medethics-2013-101409/reply.