I can tell you from personal experience that you cannot, unless you want to wait till the next year (and sign up during open enrollment). But it's not like can

I can tell you from personal experience that you cannot, unless you want to wait till the next year (and sign up during open enrollment). But it's not like cancer moves fast or anything right? You can just wait, nothing bad will happen... /s I'm a bit salty, I lost my dad to cancer last year and he was on a bullshit co-op plan that delayed treatment and made the whole experience even worse than it already was. Would insurance have saved his life? I can't answer that but the delays (before he got real insurance) couldn't have helped.