I have four girls with my ex-wife and I am now having to obtain a supplemental insurance. The children are already covered under the state medicaid program and am trying to find out about supplemental insurances but get more confused the more I see. I have been told by an insurance agent that no other major medical carrier will cover the girls as Medicaid is considered a major medical carrier. But why is it then that some people can obtain a seconday insurance and it is a major medical company such as through a spouses employer? Also, is there such a thing as a supplemental policy that is an HSA? The ex-wife knows that a supplemental will benefit no one, she just wants me to pay more out of my pocket. I know this because she told me.