<p>I agree that the tradition derives from establishing credibility as a qualified practitioner. It’s about transparency, not showing off.</p>
<p>As an academic physician, who doesn’t see patients in my office (I work in ER), I have mine hanging where students or other folks I am meeting with can see them. I enjoy seeing where people went to med school, where they did residency etc. It can be a nice conversation starter. </p>