“I think it's imperative that Republicans do a replacement simultaneous to repeal,” Sen. Rand Paul said Wednesday. | Getty Rand Paul: Trump 'fully supports my plan to replace Obamacare'

Sen. Rand Paul on Friday said President-elect Donald Trump "fully supports" his plan to simultaneously repeal and replace the Affordable Care Act.

"I just spoke to [Trump] and he fully supports my plan to replace Obamacare the same day we repeal it," the Kentucky senator tweeted. "The time to act is now."

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During an appearance on MSNBC's "Morning Joe" Wednesday, the libertarian-leaning senator urged congressional Republicans to not repeal the healthcare law without proposing and passing a replacement bill the same day, warning that insurance companies could go bankrupt and require a bailout if they did not.

“I think it's imperative that Republicans do a replacement simultaneous to repeal,” Paul said. “If they don't, Obamacare continues to unravel.”

Trump had advocated for such an approach to repealing Obamacare following his electoral victory.

“We’re going to do it simultaneously. It’ll be just fine. That’s what I do. I do a good job,” the president-elect said in his first post-election interview with "60 Minutes" on Nov. 11. “We’re not going to have like a two-day period and we’re not going to have a two-year period where there’s nothing. It will be repealed and replaced. It’ll be great health care for much less money.”

Other Republican senators who have come out in recent days in favor of simultaneous repeal and replace include Bob Corker, Lamar Alexander, Susan Collins and Tom Cotton.

Following a meeting between GOP congressional leadership and Vice President-elect Mike Pence, Republican lawmakers have reportedly prioritized repealing the law. Though lawmakers say they fully intend to put forth legislation to replace the law, a plan has yet to materialize, leaving open the potential for a delay between repealing and replacing.

President Barack Obama, meanwhile, has urged restraint, telling Republicans that repealing and not replacing the law would be "reckless."

"The question for Paul Ryan and Mitch McConnell is, why is it that you feel obliged to repeal it before you show what it is that’s going to replace it," Obama told Vox in an interview Friday. "There’s been no real explanation about why you’d try to do this before the new president is inaugurated."