The manager said an update on Camping's condition would be issued Monday.
"Please just pray for him and do not try to contact anyone at his home or Family Radio," the message read.
A neighbor told The Oakland Tribune that Camping was "doing good," although his speech was slurred.
Camping recently offered a new date for the Rapture, Oct. 21, after his May doomsday prediction failed to materialize. He made similar claims about the world ending in 1994.