PHILADELPHIA (CBS) — The Senate Health Care bill calls for major restructuring of and deep cuts to Medicaid, which provides insurance to low-income pregnant women and single mothers, children, the disabled, and the elderly.

Advocates for seniors are especially concerned.

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“Any cuts to Medicaid would be devastating,” said Holly Lange president of Philadelphia Corporation for Aging.

She says the plan calls for a cap on payments to the states.

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Since Medicaid is part state and part federal, those cuts would leave a lot of Pennsylvanians in the lurch.

“We have the fourth largest elderly population in the country, and in Philadelphia, we have a very large Medicaid population as well,” she said. “Those elderly who are low-income depend on Medicaid along with their Medicare, to help pay for their health insurance.”

Many have chronic health conditions, says Lange, and regular care allows them live healthy lives.

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“It makes no sense to cut Medicaid so that people cannot afford their insurance, they become sick, and go to the hospital, and that costs more money,” she said.