For some bizarre reason, at one particular health care provider my blood pressure always read high. At my current and previous primary care doctor, as well as

For some bizarre reason, at one particular health care provider my blood pressure always read high. At my current and previous primary care doctor, as well as with my personal BP monitoring deice, my BP was always in the "normal" range. But at the one doctor (a cardiologist) it was always, consistently, very high, regardless of who did the measurement or which machine they used. I felt no particular stress or discomfort there (no more so than at any other doctor), but it was like that for years.