Rhett Allain has published his take on what "computational physics" is.
Many of us practicing physicists do work in computational physics. Some very often, some now and then. At some point, many of us have to either analyze data, do numerical modeling, or solve intractable equations. We either use pre-made codes, modify some other computer codes, write our own code, or use commercial software.
But certainly, this is less involved than someone who specializes in computational physics. But many of us do have the need to know how to do some of these things as part of our job. People who have to simulate particle beam dynamics, and those design accelerating structures are often accelerator physicists rather than computational physicists.
Hum... now I seem to be rambling on and can't remember the point I was trying to make. Ugh! Old age sucks!