It's difficult to say because you mention cyber security, but then you're also looking into going after your Masters's in health informatics. I would say identify what is exactly it is that you'd like to do before you go get a Masters in Informatics and then end up not using it.
Networking, Cyber Sec, Programming and Sysadmin skills are applicable not just in a health care setting, but almost every other sector. Masters won't really prove that you know networking fundamentals and cyber security fundamentals. If that is the route you'd like to go, I would advise you to look into getting your Net+, Sec+, and CCNA
If you want to code, then look into coding. Check out some coding tutorials on youtube (I recommend Java New Boston) and see if this is something you can stomach doing on a day to day. Practice some tutorials and work on some of the projects he has on there. Once you feel comfortable, I would look into a coding boot camp. I recommend doing all of this cause I've seen a bunch of people waste time and money pursuing coding via a boot camp and end up failing out losing time and money. They were more so fixated on the big salaries and the few months turn around. I also notice some watch those "life as a programmer" vids on youtube and think it's all chill not realizing how it works.
If working in health care, analyzing and utilizing data is what you want to do, then do your master's in informatics. Look into learning SQL (they will probably touch on this and programming in some of your classes, but probably not enough where you're well versed). I would also look into possibly grabbing some form of management/understanding of processes and procedures cert to pair with the degree as this can help you move up the ladder quickly if you're looking into management.