Participants in the Medicare for All Rally in Los Angeles California on February 4, 2017. Ronen Tivony | NurPhoto | Getty Images

Americans say they want better health care. How that will happen is still up in the air. Enter Medicare for All, a term that increasingly is being used by health-care advocates, politicians and aspiring presidential candidates. The concept is the latest iteration of a complex discussion about medicine that goes back decades. The current goal: To come up with something better than the Affordable Care Act when it comes to giving more individuals access to care and reducing what they pay, while putting fewer burdens on medical industry. The debate comes as more Americans worry about health-care issues. A recent poll from the Pew Research Center found that health care ranks as a top public concern, second only to the economy. Terrorism came in third. The number of Americans who say reducing health-care costs should be a top priority for the president and Congress has increased steadily, according to Pew's survey. Eight years ago, 61 percent cited those concerns, while today that has risen to 69 percent.

And a majority of Americans are in favor of expanding public health coverage, according to a separate survey from the Henry J. Kaiser Family Foundation. Of the adults polled by Kaiser, 77 percent said they would support allowing people ages 50 to 64 to buy health insurance through Medicare. Seventy-five percent said those who do not have health insurance through their employer should be able to purchase insurance through their state's Medicaid program. In addition, 74 percent of respondents said yes to a national government-administered health plan that would be open to anyone. A smaller majority — 56 percent — said they support a national plan often known as Medicare for All, or a single government plan through which all Americans would get their insurance.

"The more gradual approaches have higher levels of support and, particularly among Republicans, those ideas are more palatable than a switch to a single government plan," said Liz Hamel, director of public opinion and survey research at the Kaiser Foundation. Americans generally like the fact that these plans would guarantee health insurance, eliminate premiums and reduce out-of-pocket costs, Hamel said. What some don't like, however, are the possibilities that a Medicare for All-type plan could eliminate private health insurance companies or the existing Medicare program and increase taxes, according to Hamel. "People want to be able to keep what they have if they like it," she said.

Unanswered questions

Medicare for All offers a different idea at a time when many feel that the Affordable Care Act failed to provide universal health-care coverage, according to Dr. Steffie Woolhandler, a co-founder of Physicians for a National Health Program. As debate around the concept grows, more Medicare for All-type proposals are emerging with similar names: Medicare for America, Medicare Extra for All, Medicare Advantage for All, to name a few, according to Woolhandler. "They sound a little like Medicare for All," Woolhandler said. "But they don't mean the same thing as the three English language words Medicare for All."

Senator Bernie Sanders (I-VT) speaks during an event to introduce the "Medicare for All Act of 2017" on Capitol Hill in Washington, September 13, 2017. Yuri Gripas | Reuters