Suppliers with multiple D/B/As and single Tax ID

We have recently received invoices from a small number of suppliers that perform services under more than one D/B/A name, but report the same Tax ID on separate W-9s submitted.  For example, we pay the county government for both real property taxes as well as for water/sewage services.  The payments are required to be remitted to the specific D/B/A name of the entity to be paid.  Has anyone experience with this issue and suggestions for managing the Supplier data appropriately?

Thanks,

George R.