[connor]

Honestly, it sounds like you really need to decide what you want- do you want to launch an internet startup or do you want to continue as a professional oral surgeon?

If you choose to take your money and launch your own general internet startup (ie a "Dropbox"), I suggest you quit your MD tomorrow. Treating an start-up as a side project (and a side skill) is a bad idea. After all, your competitors are spending 100% of their time on their competing start-up.

That said, you do have domain expertise in oral surgery- try and leverage that domain expertise. Use your unique blend of skills to your advantage.