The group, the American Medical Association, will instead continue to back an expansion of Obamacare and begin to study "public option" approaches in which government coverage is offered to people alongside private health insurance plans. The plan it rejected is often referred to as "single payer," and in Congress it is embodied in the Medicare for All Act.
The bill would cover everyone living in the U.S. with a government plan and do away with private health insurance. It has long been pushed by Democratic presidential candidate Sen. Bernie Sanders, I-Vt., and has the backing of other Democratic candidates who currently serve in the Senate.
Bob Doherty, senior vice president of governmental affairs and public policy for the American College of Physicians, tweeted that the measure was defeated by only 53% of delegates at the conference.
"The delegates are clearly divided, nearly down the middle, on it," he wrote.