The following information is from CMS and Trailblazer Health. Take note, the NPI is no longer optional....it is mandtory and claims will be denied with it.
The "Medicare Appeals Process: Five Levels to Protect Providers, Physicians and Other Suppliers" brochure has been updated and is now available for order via print copies or as a downloadable PDF file. To view the PDF file, go to http://www.cms.hhs.gov/MLNProducts/downloads/MedicareAppealsProcess.pdf , or to order hard copies, visit the MLN Product Ordering Page at http://www.cms.hhs.gov/MLNProducts/ . Scroll down to "Related Links Inside CMS" and select "MLN Product Ordering Page."
Part A:
Mandatory Reporting of the NPI on All Part A Claims
http://www.trailblazerhealth.com/Tools/Notices.aspx?DomainID=1&ID=12060
Part B:
NPI – March 1 Milestone
http://www.trailblazerhealth.com/Tools/Notices.aspx?DomainID=1&id=12301
Mandatory Reporting of the NPI on All Part B Claims
http://www.trailblazerhealth.com/Tools/Notices.aspx?DomainID=1&ID=12115
New NPI Correction and Inquiry E-Mail Address
http://www.trailblazerhealth.com/Tools/Notices.aspx?DomainID=1&id=12303