Image 1- reference - screenshot of world bank data as accessed on 27 July 2019 from Nepal.
We can notice -
1) Sudden change (doubling) in per thousand doctors in China from 1.5 to 3.14 in 2011-12
2) Sudden change (doubling) in per thousand doctors in India from 1988 to 1991 and then suddenly decline back to half (following the previous trend before this change) from 1991 (liberalization) to 1992.
Both these trends make me curious to find the cause but unable to link with any event/policy change or anything else which might have caused these dramatic changes. Also though the lines look like constant growth, these are just straight lines joining the 2 data points with sudden change.
image 2 reference - The trend and features of physician workforce supply in China: after national medical licensing system reform https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5883882/
Image 2 from the article does not show such doubling effect from the year 2011 - 2012 and the article mention medical licensing reform long back in the 1990s. "This study analyses a unique census data set that provides the headcount of newly licensed physicians from 2005 to 2015 in China. We also review a short history of medical licensing system reform in China since the 1990s."
Kindly provide your inputs on this in comments.