Fat Joe's taking a break from ripping mics to tear into America's healthcare system and the politicians allowing hospitals to essentially steal from patients ... and TMZ Hip Hop's learned he's taking this fight all the way to Washington, DC.
Joey Crack recorded this incredibly powerful message last month in the Bronx, calling out healthcare "crooks" for hiding hospital prices -- something that's actually illegal, but as Joe points out ... no one's policing the system.
Joe teamed up with Power to the Patients to demand change, and you can tell he's feeling this cause as much as any verse he's ever recorded. As he says on the spot, "When we can't see or compare prices, hospitals charge us whatever they want. They robbing us!!!"
The Bronx icon has some A-list companies in the fight for patients' rights. You might recall ... Susan Sarandon and Cynthia Erivo filmed their own PSAs last year for Power to the Patients, which aired during the Oscars.
Susan also joined us on "TMZ Live" to tackle the hot button issue.
We're told Fat Joe's so serious about this campaign, he'll be attending the White House Correspondents' dinner later this month to rep the org, and, hopefully, get some DC powerbrokers onboard with the effort.
He adds, "Right now millions across the country are being dragged into debt because they're blindsided by the cost of medical bills" ... and his goal is to remind communities of their rights, while demanding elected officials do something to "end this injustice."