What documentation is considered acceptable regarding the verification of my National Provider Identifier (NPI)?

The CMS 855S enrollment form requires each supplier to furnish its NPI in the appropriate section(s) and submit a copy of the notification received from the National Plan and Provider Enumeration System (NPPES) verifying the NPI.

CMS considers the following to be acceptable NPI notifications:

  • NPI notification letters from the NPPES. These notifications are sent to suppliers who applied for the NPI by completing the paper application.
  • NPI email notification. These notifications are generated by the NPPES and are sent to suppliers who applied for the NPI through the Web-based process.
Further, CMS has stated a copy of the NPPES screenshot, verifying the NPI, is acceptable for Medicare enrollment purposes. However, the screenshot must show the required information, be legible and unaltered in any way.

Again, suppliers must furnish the NPI in the proper section(s) of the CMS 855S and submit an acceptable form of notification from the NPPES before any enrollment documentation is processed.

Attached are some examples of acceptable NPI notifications. Please view these examples below.

Contact NSC

Email National Supplier Clearinghouse

Contact a specific NSC department

Telephone: 866-238-9652

IVR: 866-238-9652


National Supplier Clearinghouse

Palmetto GBA, AG-495

P.O. Box 100142

Columbia, SC 29202-3142

Other Palmetto GBA Sites

Palmetto GBA Home

DMEPOS Competitive Bidding Program

Jurisdiction J Part A MAC

Jurisdiction J Part B MAC

Jurisdiction M Part A MAC

Jurisdiction M Part B MAC

Jurisdiction M Home Health and Hospice MAC


National Supplier Clearinghouse MAC


RRB Specialty MAC Providers

RRB Specialty MAC Beneficiaries




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NPI Notification E-mail Example Type 1.pdf
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NPI Notification E-mail Example Type 2.pdf
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NPI Notification Example Letter.pdf