CMS offers tips on these basics.
You know just where to list your NPI on your Medicare claims, and you have your PTAN handy whenever you call your MAC about a billing issue. But do you know the difference between these two identifiers, and why they both exist? Many providers don’t — and the Centers for Medicare & Medicaid Services aims to clear that up in MLN Matters article SE1216, which the agency recently revised.
NPI: The National Provider Identifier (NPI) is distributed by CMS and is a unique 10-digit number that identifies your agency to the Medicare program. You’ll list the NPI on your claims, and you’ll get it from other providers so you can bill claims that are referred or ordered. If the physician is part of a group practice, he’ll probably have one NPI for himself and another for his actual organization.
PTAN: The Provider Transaction Access Number (PTAN) is a number that your MAC assigns you when you contract with it. You’ll use the PTAN to authenticate who you are if you contact your MAC with any questions, such as those about billing or payments. You typically won’t use the PTAN with CMS, but instead will use it with your MAC.
Resource: For more on this issue, check out MLN Matters article SE1216 at www.cms.gov/Outreach-and-Education/Medicare-Learning-Network-MLN/MLNMattersArticles/Downloads/SE1216.pdf.