I am trying to better understand the role of fiscal intermediaries. Is the choice of FI's dependent on the center's location (eg state)? What happens if a dialysis center has multiple units that cross state lines, canthe center chose among the FIs for both states? Does it depend on where headquarters is located?

It usually depends on where your home office is located, or corporate main office.

The MAC contracts have changed so UGS/NGS will be losing a share of their business to Palmetto GBA.