Governments just don't follow their own rules. This means that medical files just aren't trustworthy anymore, in the sense that the patient has no control over who sees these and how far they are sent.
I could say "this is a problem in the Netherlands, Belgium, UK and US" where I know the situation is that essentially any doctor or medical staff anywhere can see everything in your file, related or not (e.g. in Belgium a pharmacist getting a woman's birth control prescription can see if they were ever treated in psychiatric care. Hell, the way the system looks, it'd literally be hard for the pharmacist not to notice). These files can even be used against you in a court of law, for example by child services.
Not that all these countries aren't very busy introducing new ways to have the state do whatever they want to do without judicial intervention (Belgium "GAS boetes" and "snelrecht", Netherlands "ZSM"), and just not care how much damage is caused to save a few bucks.
So what are you to do as a patient ? You cannot have this file destroyed, because these people have exceptions to every known privacy law. You can usually in theory have it corrected, but the system these governments put in place is fragmented into hundreds of pieces and nobody knows how it works, so good luck. Additionally actually getting them to cooperate even using an order from a judge is near impossible, and the systems may literally not support corrections in some cases.
At this point the only advice you can give is to please ask every doctor you ask to not make any notes or files on you at all, and just deal with that. "I travel a lot and this just causes trouble" is a useful phrase in that regard.
