I'm not personally in this world, but know some people in it.
Yes, most or all med schools will have several full-time positions teaching, supervising curricula, and other assorted medical education things (simulation, etc.) where they actually prefer to hire MDs. That being said, I have gotten the impression that the "teaching med students is my passion" landscape is rather saturated, so these types of jobs will go to either people with tons of medical education experience or people well-connected to those offering the job.
Unless you are fully plugged into the medical education world already, the typical path would be to offer your time for some guest lecturing or med student precepting in your field for a nominal (or zero) amount of money. Then you get in the good graces of the powers that be and you get offered to do an extra lecture or facilitate an extra small group. Then maybe you get asked to sit in or advise on some committee or some new effort. Then a part-time role opens up and you hope to get that. Then in the rare event that one of the old-timers retires or moves and a full-time job opens up, you play up your CV and try to get a full-time role. As in real academia, there are more people gunning for these positions than the number of jobs available. Many of these people have additional education-related degrees and do medical education research in addition to the things I mentioned above.
My perceptions may be colored by the local dynamics here and it's possible this is not the case in the rest of the country. But from where I'm standing, if you want to make this leap, you need to commit to 2-5 years of grinding hard so that you get a local reputation as the medical education guy.