[pclmulqdq]

Doctors and lawyers build up immense amounts of "open-source" work that proves their skill. Almost everything a lawyer writes becomes public at some point. Doctors have patient results and billing records that can be checked on a reference call. Software engineers comparatively work in the dark and rely on softly-defined metrics.

[NegativeK]

I don't think patient results can legallay be shared (in the US) on a reference call with any specifics, and vague statements are no better or worse than a manager describing a dev's performance on projects.

And I'd be kind of surprised if a practice shared billing performance info. That'd be like sharing a tech support person's ticket close rate, but even more sensitive. Maybe at a very high level if HR isn't concerned with defamation claims?

[pclmulqdq]

Patients cannot, but other doctors see these outcomes and can comment on them in vague terms. Administrators can also comment in vague terms.

It's all anonymizable.