Oh I've been going to this guy since he opened his practice almost 20 years ago.
He's never given me a reason to distrust him - but he's definitely one of those people who only tells you as much as you need to know before doing his work.
"Good morning, so today we're going to do stuff..."
"Uhmmm, could you be more specific?"
"Sure, hang on <whhhrrrrrrrrrrrrrr..........>"
It's pretty much the same with all health professionals in my experiences. Eye doctors, sports medicine doctors, dentists - so overworked that they don't have time to engage with their patients at any level.