Losing Coverage and Terminally Ill

I just moved to CA about 6 months ago–and this question is for my brother–who has been in CA for a couple of years. He currently has his insurance through a domestic partner–and that relationship is ending and he will lose insurance. What makes matters WORSE–is that he was just diagnosed with 6mo-1 year to live. He MIGHT qualify for Medi-Cal..but, that application takes 2-3 month to process.

In the meantime–would he qualify for insurance under ACA? He cannot be left with any gap in his insurance…or we’ll be broke. He wants to sign up for Anthem Blue Cross. Is there ANY way that he can have coverage by the FIRST of April? How does he get approved to sign up late?? This is all very confusing for me and I am trying to help him.