I always wondered why in US doctors rarely consult each other. You come to a different doctor, and they say previous doctor was wrong and they will treat you pr

I always wondered why in US doctors rarely consult each other. You come to a different doctor, and they say previous doctor was wrong and they will treat you properly. But they will never call/email the previous doctor to ask why "right" diagnosis wasn't considered. I remember in xUSSR doctors used to consult each other a lot. Any more-or-less serious diagnosis was made by 2-3 doctors at least (primary doctor is still responsible, but other doctors may help).