For MA, sort of. I don't make it an official thing, but when I was looking for a new school, I'd ask them about the history of the style, and pepper in questions about who taught them and how long they've been training, and if they cross-trained. Surprisingly, once I started asking the people I talked to just kinda kept going, and I knew their entire MA history without having to ask. The few that were guarded, I didn't care to go back to.
I'd imagine if I was looking for someone for fitness, I would either need
A: a recommendation from someone I know has spent a lot of time focusing on fitness
B: a recommendation from someone I saw go from zero to hero fitness-wise
C: information from them on where they learned to be a fitness instructor, and how long they've been doing it.
That probably sounds like BS, but if I was going to go to someone to help me with my fitness, I would absolutely want to know I could trust them with it.