According to the US Navy, 4 are currently deployed, 1 is prepping for deployment, 3 are coming out of drydock maintenance, 2 are in drydock, 1 (Ford) is still undergoing certification, and 1 is still technically building (has been launched).
So we can 5 ready for action now, and 3 more 60 - 90 days out.
Wiley is right, Reagan is "Fwd deployed" and in maintenance at Yokosuka.
But she's not in drydock and has her aircraft, so she's probably close if they need her (and she doesn't have very far to go, geographically).