I don't work in healthcare but experienced burnout for sure. Here's how I see it...I worked in a job that I loved for 15 years and over time got better and better at it and had more and more responsibilities added to my work load. By the time I burnt out, I was doing so much work, so many jobs that I should have been paid for 2-3 people's jobs. I feel like once you get to that point where everyone dumps piles of work on you, there's no going back, no cutting back. Your co-workers know you know how to do everything and you become the go-to person. I woke up one day and realized despite the many suggestions I had for improving things, nothing was ever going to change. I left (almost 3 years ago) and now when I see the one friend I have left there, she tells me that literally nothing has changed and the person who took over my role has come and gone and now they have "filled" that role with someone temporarily who gets no extra pay for it. Screw that!
That being said, I took a 3 year break from working and started a new job a few weeks ago and it's kind of nice being new because the expectations of me are pretty low right now. Is the grass greener? I don't know...I guess, yes? Because the stress that I was feeling from the last job is gone. Of course there is new, different stress at the new job, but I doubt I'll allow myself to stay so long that I get burnt out again.
I'll say this...don't be afraid of change, you can probably adapt to much more than you think you can and if you're feeling like you want to do something different, give it a try. Even if it's not the greatest thing in the world, sometimes just doing something different and maybe challenging can build character. Ask me how I know. :)