I've done data analysis for a decade in the healthcare space, ML is not at all common. Basic statistics and data munging is 99% of what you need, you're mostly doing SQL to gather the data, then a lot of older folks still use SAS, my god. R looks way more "shiny" than SAS, nevermind python. Python is trendier in all other fields it seems, it really hasn't penetrated healthcare in my experience. R on the other hand, so many healthcare researchers come from academics and statistics courses where R is way way more popular than python.