Anonymized patient records, preferrably with information about the doctor performing the diagnosis as well. I've only been able to find small datasets of some t

Anonymized patient records, preferrably with information about the doctor performing the diagnosis as well. I've only been able to find small datasets of some tens of thousands of records, I would like tens of millions. You can't learn much from what amounts to one small town's medical records, in terms of finding accurate diagnoses, or identify places and situations that result in better doctors.