Nate BerkusTalk show host Nate Berkus has been hospitalized with appendicitis and is awaiting surgery.

A representative told PEOPLE, "He was on the 'Today' show ... and he wasn't feeling well. He powered through and then went straight to the hospital after that and they learned he had appendicitis."

"He was in a lot of pain," the rep added. "I don't think people realized how ill he was."

His hospitalization has halted shooting of 'The Nate Berkus Show,' which premiered in September.