Healthcare Data GlossaryProvider
PTAN: Definition and Healthcare Context
Full name: Provider Transaction Access Number
A Provider Transaction Access Number (PTAN) is an identifier assigned by a Medicare Administrative Contractor (MAC) to individual providers or supplier organizations upon Medicare enrollment. Unlike the NPI, which is universal, a PTAN is jurisdiction-specific — issued by the MAC serving a provider's geographic area. PTANs appear on Medicare remittance advice and are required for electronic eligibility transactions. A single NPI holder may have multiple PTANs when enrolled in multiple MAC jurisdictions or under different provider types.
Last updated: 2026-05-31Reviewed by: Dr. Jennifer Montecillo, MD — Gullas College of Medicine, 2019. Non-practicing medical reviewer.
How it’s used
- CMS PECOS Medicare Provider Enrollment: PTAN is issued at the time of Medicare enrollment through PECOS, linking the provider's NPI to their MAC jurisdiction and enrollment record.
Frequently asked questions
- What is a PTAN?
- A PTAN (Provider Transaction Access Number) is a Medicare identifier assigned by a MAC to a provider upon enrollment — distinct from the universal NPI.
- How does a PTAN differ from an NPI?
- An NPI is a universal, permanent identifier for all HIPAA-covered providers. A PTAN is a MAC-specific enrollment identifier used for Medicare billing in a specific jurisdiction.
- Can a provider have multiple PTANs?
- Yes. A provider may have multiple PTANs if they are enrolled in more than one MAC jurisdiction or under multiple provider type categories.