Should I go to a specialized children's orthodontic hospital?

My nephew is about to get braces for an overjet correction.

While receiving cavity treatment, I was advised to undergo orthodontic treatment.

A dental hygienist among my acquaintances is involved in the process, which includes detailed examinations and taking dental impressions, all within the same hospital.

It should be done at a place where an orthodontic specialist is present.

I heard that. The first hospital doesn't seem to be a hospital where they stay permanently. In this case, I'm wondering whether it's better to transfer to a specialized orthodontic hospital or to start treatment at the place I've been going to. If anyone has experience with children's orthodontics, please give me some advice~