No, generally unless they are seen they don't pay a copay for an HMO. Though you will run across a few HMO's you won't see them as much as you would have a few years ago.
When the check comes in you will still need to post to the accounts and like I said.. some will require a claim every month, some won't. Special posting codes are recommended in your PM software so you can report on HMO's montly or bi-monthly because they really have to be watched carefully.