I went there today, and everything was fine.
I went to Fuzhong MRT, which is the one after Banciao MRT. I took Exit 2, and emerged a slight angle to a large street. I crossed that street and turned left. (EAST)
About 100 meters down on the right is Minzu Rd. I turned right. (SOUTH) It is a very small street at that point, and is marked only by a small sign at eye-level in Chinese, so if you can’t read Chinese have someone write out the characters for you. Another reference is that Minzu road goes right by the Banciao KOJEN. You can see the KOJEN sign on the roof of the building from the main road, or more clearly once you go down Minzu a bit.
Following Minzu, the road curved a bit, and then became much larger. The NIA office is on the right about 350 meters down. Landmarks are: on the left, about halfway, the Taipei County Fire Office; on the right, almost there, Chunghua Telecom’s training center.
The NIA Service Center is a two storey building. The ground floor is the main center. Service was fast and friendly.
NOTE: I WAS NOT required to to upgrade to an IC card! I brought photos (550 NT @#*!&$!) but the guy just stamped the back of my rather old and ratty looking regular green paper ARC for another 3 years. (JFRV)
Time walking to OR from MRT to NIA: 10-15 minutes
Time at NIA office:15 minutes.