Make sure you know the laws of your State and any State in which you OC.
But, in general:
No, you will not be stopped every time. You will be stopped some times. Not all cops know the law, and some are on power trips.
You do not have to ID yourself unless it is a lawful stop. Check your State law as to what constitutes a lawful stop and how you go about IDing yourself. Typically, you can only be stopped if an officer has reasonable articulable suspicion (RAS) that you have committed, are committing, are about to commit, or are a witness to a crime.
You may only be disarmed for officer safety during a lawful stop.
The officer may not run your serial numbers for the hell of it. He must have probable cause--and usually a warrant.
Many will advise you to refuse to ID yourself if the officer does not have RAS. I will advise you to follow the law regarding IDing yourself and letting the officer disarm you unless you know for a fact that the officer has no RAS. Most of the time, there is no way to know--and if you are wrong, in many States, you will be committing a crime if you refuse to ID yourself.
Again, check your State law for specifics. What I have provided are general rules.