The OECD published data last month showing the relative pay of PCPs and specialists across 14 countries. The US had the highest relative pay for primary care physicians, while the Netherlands had the highest relative pay for specialists (with the US in a close second.) Most countries had less disparity between the multiplier of PCP pay to average wage and that of specialist to average wage. Note that this report counts pediatricians and probably many internists as specialists - so it understates the income disparities. Here is a link to the full report.