Unfortunately there is no way to get around the Medicaid deductible. Your marriage did in fact increase the household income and there is no way around that effecting your income for Medicaid eligibility other than divorce.
You do qualify for Medicare benefits because of your disability. You can apply for traditional Medicare. There will be some cost plus you will have to pay for a supplement. However, Medicare should be less than your Medicaid deductible. You apply for Medicare at the Social Security office or by calling. Here is the Medicare website: http://www.medicare.gov/default.aspx
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