It was a "breakthrough moment," Sebelius told CBS' The Early Show, noting that in the 1990s, most of these people would not have dared discuss health care reform.
Now, Sebelius says, these leaders want to "be part of the solution," adding that they have the "tools" to help start slashing the crushing costs of health care.
Sebelius also tried to allay the fears of Americans who think cost-cutting measures will lead to a worse system. "It isn't about cutting services," she said. "It's about doing smarter, more efficient, better medicine for the American people."