The issue of how physicians can collaborate effectively when two specialties seek to perform the same services has presented increasing challenges in many contexts. A classic problem area with regard to this is the advent of coronary computerized tomographic angiography (CTAs) performed by cardiologists who generally do not read the full chest cavity. In contrast, radiologists frequently hold exclusive privileges at the hospitals at which they practice and are not as intensely focused on cardiac organs. The American College of Radiology asked us to provide them with a white paper elucidating potential reimbursement liabilities associated with splitting these interpretations. That white paper is now available addressing these issues, all of which would be obviated with the advent of PROMETHEUS Payment®.