[epmaybe]

Very few physicians are tenured professors today. Many stay at the associate or assistant level.

[capnrefsmmat]

At most American institutions, associate professors are tenured.

[epmaybe]

Thanks for the correction. However, many doctors that are in mainly clinical practice but publish occasionally under the university umbrella do not generally on a tenure track. So their title may be associate professor, but they are not generally tenured. However, if they spend a significant amount of time in research they may still have tenure track.