Lying is a lie, nonsense, fiction.
Watching how you can teach a patient a lie, you can both say a doctor is lying or not.
If at the same time he does not violate the oath of the hepocracy and it will benefit the patient, then it can be considered not a lie.
And as an ordinary person - the doctor is lying like all of us ...
Yeah that's it, they have an oath, a promise that they will serve the people professionally. And whatever inside their oaths, I'm sure that it's all for the good of the patients.