There is tons of help needed in Medical software, I made the jump to work in Radiation Oncology in 2014 after working at a large travel website and I do not regret it at all. The key is to find a company that maintains high security while still being "agile". That way the work is meaningful, and still similar in pace to working other programming jobs.
I find my work far more impactful, knowing millions of patients are being treated by my software in some way.
Look into working at a university, "research programmer" is the title to search for. It won't pay well, but the benefits are usually world-class, the environment is incredibly fulfilling, and you can take courses for free.
I find my work far more impactful, knowing millions of patients are being treated by my software in some way.