A major government program helps poor and low-income retirees and adults with disabilities defray what can be substantial healthcare expenses that aren’t covered by Medicare. But enrollment is unusually low in some states because of more stringent eligibility standards. The Medicare Savings Programs, which are administered by the states and funded by the federal government, subsidize Medicare’s Part A and Part B premiums and cost-sharing obligations for more than 10 million Medicare beneficiaries. But participation varies widely from state to state, according to a new report by the Kaiser Family Foundation, due to a combination of differences in need and varying eligibility standards. No more than 10 percent of the retirees in Nebraska, New Hampshire, North Dakota, Utah, and Wyoming…