If he files MFS and puts the money, it's his acct and her acct can he write both of them off? 

$4,875 into his and $4,875 into hers? He needs the write off that's why I'm wondering 

"Also, can you use Medicare premiums for self-employed health ins and add a supplemental ins as well to box 15 sch C?"

I don't mean the 1040. What I am saying is a write off on the sch C self-employed health ins deduction.