WASHINGTON — In the first major step to revive his health care agenda after his party’s loss of a filibuster-proof Senate majority, President Barack Obama on Sunday invited Republican and Democratic leaders to discuss possible compromises in a televised gathering later this month.

Obama’s move came amid widespread complaints that efforts so far by him and his Democratic allies in Congress have been too partisan and secretive.

The Feb. 25 meeting’s prospects for success are far from clear. GOP leaders demanded Sunday that Democrats start from scratch, and White House aides said Obama had no plans to do so.

“If we are to reach a bipartisan consensus, the White House can start by shelving the current health spending bill,” said Senate Minority Leader Mitch McConnell, R-Ky.

House Republican leader John Boehner of Ohio also threw some jabs while accepting Obama’s invitation. He said he was glad the White House “finally seems interested in a real, bipartisan conversation,” adding that Americans have rejected “the job-killing, trillion-dollar government takeover of health care bills passed by the House and Senate.”

Obama told CBS’s Katie Couric that he and the leaders of both parties will “go through systematically all the best ideas that are out there and move it forward.”

Asked if he was willing to start from square one, the president said he wants “to look at the Republican ideas that are out there. And I want to be very specific. ‘How do you guys want to lower costs? How do you guys intend to reform the insurance markets so people with preexisting conditions, for example, can get health care?’”

“If we can go step by step through a series of these issues and arrive at some agreements,” Obama said, “then procedurally, there’s no reason why we can’t do it a lot faster than the process took last year.”

Congress’ Democratic and Republican leaders have differed sharply on most major questions in the long-running health care debate. Only one Republican voted for the House health care bill approved in December, and no Republicans voted for a similar Senate version.

White House officials said Sunday that Obama does not intend to restart the health care legislative process from scratch. Many liberal groups and lawmakers want congressional Democrats to use all the parliamentary muscle they have to enact the measure that the Senate passed on Christmas Eve, employing rules that could bypass GOP filibusters to make changes demanded by House Democrats.