How will the employers know which Payer ID to use?
Ask your Carrier or your Claim or bill administrator. The empoyers should use the Payer ID of the entity that is going to process the electronic bills. In general, this will be the TPA or Claim/Bill Administrator’s Payer ID. In some cases the administrator is the Carrier itself and the employer will use the Payer ID even if it happens to be a Carrirer in those cases. The employer should direct the provider to send the eBills to the entity that is going to process the eBills, whether this is a TPA or a Carrier, and give the provider that entity’s Payer ID.