What are your thoughts about putting credentials next to your name on Linkedin?

[eLearner]

"Hi, I'm <insert name>, I'm a Doctor of <insert discipline>" then that solves a lot.

you over estimate the intelligence of the average patient

You underestimate. My personal experiences taught me that patients are a lot more knowledgeable than they're given credit, it's just that too many providers are too full of themselves to listen. It's the healthcare providers that surprised me (and scared me) with their lack of intelligence. The above is something my local hospital does. They did it after some other hospitals were sued a few times by DNPs who got fired for refusing to stop introducing themselves simply as "Doctor" to patients. The idea is to eliminate the liability through transparency. But in reality, it's just a way to appease brats who are more concerned with their titles than they are concerned with doing what's best for patients.