Really? Evidence please
I'm likely to be one of the last people to rush to the defence of the Catholic Church, but I have to draw the line here. My own education was carried out by a missionary order and the Biology curriculum was pure Charles Darwin.
Similarly, I know some folks who went on the missions, misguided though they may have been, but they certainly didn't refuse treatment to anyone, simply because they didn't subscribe to their beliefs. Others of course may well have done.
If you know of specific cases, then by all means Name & Shame my man. If not, then you may simply be airing your unpleasant prejudices here because you feel that you have an uncritical audience. If so, kindly shut the fcuk up!