The same name distinction in Civicrm
Under Administer - Customize Data and Screens - Display Preferences, near the bottom, there's a setting for &quot;Individual Sort Name Format&quot;. You can add in some tokens here. Not all tokens work so I don't know if there's one for your custom id, but if there isn't you might be able to find another useful field.

Note when you click save it won't automatically update existing contacts. You'd need to edit and re-save those.