We have had several Hospitalist physicians leave our practice. We have been bringing in locums to fill in for the same physicians. Now that 60 days is completed, we cannot bill the locums under the providers that have left. We have started credentialing the long term locums. My question is.....Can you bill a 'temporary' locum under a 'long' term locum since they are credentialed with the hospital, put not employees of the hospital? Has anyone else had this issue?