My parents will be arriving to the US as legal permanent residents by the end of January 2015. The process for obtaining the green card and social security might take at least 3 weeks and therefore they will be missing the deadline (February 15) for the Obama care enrollment. Is there any way that they can sign up for the Obama care and as soon as they get the social security number provide that information? I don’t want them to miss the deadline.
If you missed open enrollment because you weren't eligible for coverage, then become eligible, you qualify for special enrollment. This includes waiting for a green card or SSN.