If an IM practice had a contract agreement with an outside radiologist to read and perform a report for each x-ray, wouldn't the IM practice still bill out the rendering global service under the radiologist name not the ordering IM physicians name? If you bill the gobal service under the IM physician name than it would look like that IM physician rendered the service. The radiologist doesn't have to be an employee of the practice since they have a contract but wouldn't the radiologist have to be credentialed under the participating insurance carriers that the practice is under the practice's tax id since the radiologist is rendering the service? And articles or advise is needed!