Whatever you do don't go crazy all in.  I actually paid the IBR minimum while I was in residency because I was spending all the rest of my money on bitcoin mining equipment.  It did pay off, though probably not as much as you'd think since I mined them mostly at a cost of about $500 per bitcoin.
But honestly if you budget well you can get out of your debt just by being a physician.

That said, there are a LOT of junk investments here and a lot of nonsense posted and we are definitely in the middle of an altcoin bubble.  So I am honestly not sure what is good to invest in at the moment.  Right now it's mostly good for people who've already made those investments a while ago.

If you do do this I would set a budget for yourself and then diversify into like 3-4 really promising tokens, and try to get in early on the more innovative ones that really have a shot of greatly changing things.  BUT even if you do so, realize that you can lose every last penny and it wouldn't even be unlikely.  Most altcoins become worthless over time, just look at the list of altcoins that were popular 1-2 years ago and compare them to today's lists.

Right now the growth in my wealth is about 50/50 cryptocurrency and my work as an attending, but the cryptocurrency side is insanely volatile.