I wasn't aware health anxiety was a specific form of anxiety. I always thought of myself as a hypochondriac but that went back long before serious anxiety was a problem for me. I worried but didn't have the kind of anxiety symptoms I do now. Also, there are other things causing my anxiety other than health worries, but I would say that's the biggest one. The big question for me is how alcohol played a role in this. I worried about health etc when I drank every day, but it wasn't until I cut back significantly that the anxiety became the kind that needs professional attention.
(My doc charges a flat fee per year without taking insurance so there's never a specific fee when I visit.)