The Medhall Corporation is a pharmaceuticals company based in Brockton Bay. Their logo is a crown on a red-and-yellow background.
Ostensibly a legitimate company, President and CEO Max Anders used Medhall as a front for laundering money. It is used a a legitimate front for the empire's activities in other ways. Including employing many members in order to supply a steady income.
With Max Anders' death, it is unknown what assets, if any, were inherited by Theo.