My law degree has more than 40 years of rust on it, so I don't know whether you can be required to produce identification, but if you don't, I can almost guarantee you that you'll be detained and your identity will be discovered during the "inventory" search of your belongings.

For the most part, courts have upheld this, so I would not make any big deal about same.  You do not have to reveal any aliases, by the way.  (Remember the movie JFK?)

However, beyond that, you should just dummy up and say nothing except that you want to speak to a lawyer before saying anything else.

(still not a lawyer)

I don't know if this is current, but it used to be in my state one can be held for 48 hours without charges if the officer can not identify you.  
I think your identity is the one thing you must provide (or they'll hold you as a person of interest until you're fingerprinted).  That would probably be more suspicious than providing the id in the first place.  
It is standard proceedure with our beloved State Police to run an records check on anyone they come in contact with...  even passengers in a traffic stop.  If you DO have an outstanding Warrant, it's already too late.  You're going to deal with it & right then.  Anything you do will only make it worse.
LE has the right to pat you down for weapons without charges or any probable cause, for the officers safety.  LE does not have the right to do a full search but crinkling baggie in your pocket may provide probable cause for one.  If LE asks if you have any weapons, don't forget to mention the tiny pocket knife (in your pocket, of course).  

As a tactical move, one does not want to act like we're concealing something but anything we say can be turned against us...  better to provide the id & remain silent...  
skb

          While most if not all states have "stop and indentify" statutes that permit LE to ASK for identification, whether you are required to ANSWER- to produce ID - depends on the particular statute. In some States, a suspect's refusal to identify himself is a misdemeanor offense or civil violation; in others, it is a factor to be considered in whether the suspect has violated loitering laws. In other States, a suspect may decline to identify himself without penalty.

        These statutes are sometimes overturned on constitutional grounds for vagueness but I agree with the other posters that the most prudent course of conduct is always to carry ID and to produce it if asked.

I guess the one exception in states with mandatory answer laws would be if the provision of identity would itself incriminate you. If the police have an outstanding warrant for Don't Taze me Bro, I do not see how you could be required to identify yourself bc of the Fifth Amendment.