If your doctors office is not inside of a hospital, there is not a "no guns" sign, and no one who works there has told you no guns allowed, then yes, of course you can carry there. The hospital portion of the off limits places is only for places that offer in-patient care of some sort, not for any medical facility. In today's world though, many doctors offices are in fact inside of a hospital, and in taht case, you could not carry there concealed.
-jason r.