Blood test, background check including all prior training records that are reported to the FAA.
Not a lot of work for the candidate in the interview, but it's easy to fail one too many training events or accumulate a violation and become radioactive.
If the interview is for becoming a partner at a practice, it's a two way courtship that's more reminiscent of other businesses looking for a co-owner.
Doctors also tend to hear about each other. Even in decent sized metro areas, they can often know who to avoid.
(This process isn't perfect, but it's still way different than for software.)
The person who is the most important to you on the worst day of your life is the emt. The interview was literally "do you have a drivers license, and are you grossed out by stuff?" The rest you learned on the job.
Weird how doctors are vetted but prehospital folk are not.
edit yes there is training, but it happens after hire
The reason why EMT have such hiring practices are because many people can do the job, and there are many willing to do it.
It’s not weird if you think of in market terms.
Software development is neither exhaustively certified, nor narrow, nor perfectly transposable.
Developers want a 15 minutes interview, but also scream "Would you ask a builder if he has experience with blue hammers specifically?" when they get denied an interview because they do not have experience with the exact tech stack of a company.
Because that's how pilots and doctors work. They not only need to have experience with a blue hammer specifically, but it needs to be exact same make and model.
Imagine if a GP claimed to be neurosurgeon because they cured a headache. Developers get to call themselves fullstack the day they modify an API route.
Rigorous formal education, multiple rigorous exams, then years of shadowing and training. I went through this process, and tech interviews are a breeze by comparison.