As someone that's worked around banking and finance a fair amount in the last few years, I'd say this is not universally true. I've never worked in the medical sphere, but I have worked on everything from tiny payment systems at SMEs to massive compute systems at banks in the top handful of the fortune 500, to quasi-governmental inter-bank communications bodies, and really I've not seen any more focus on qualifications, nor reliance on 'hard' coding interviews than I've seen elsewhere in software.
Maybe medical is different, AFAICT finance and banking ain't.