payer name to reflect payment name

We have quite a few Third Party Administrators for our insurance carriers, but the payment still come from the carriers. So for example, I bill Fulcrum (TPA) for a Quartz (carrier) policy. When the claim processes the EOB comes from Quartz, yet when I post the only choice is Fulcrum. I'd love to see a field where we can choose our Insurance company for who the payment is from, not the TPA. This would make it more efficient when we need to file taxes and can deduct certain payers from our revenue total and also would assist in when we review carrier payments in reports.