How can I be sure the individual present to conduct the site visit is authorized to do so?

An authorized site inspector, whether an NSC employee or a contractor, will have a photo identification card and a signed letter on CMS letterhead authorizing the individual to conduct the visit with them. Please note, the inspector will have a camera to take various pictures of the facility, sign, inventory, etc. The inspector will also have a questionnaire to complete based on the supplier standards.

The inspector will ask to review your files to determine if you are in compliance with certain requirements of the supplier standards. However, the site inspector should not take the files, make copies or take pictures of the information contained in the files.

Please notify the NSC immediately if the site inspector requests to take the original or make copies of the beneficiary files, fails to present the photo ID or fails to present the signed authorization letter. You should not give any information to an individual that is not properly credentialed. Please call 866-238-9652 to report any concerns.

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 Bid Program

JM Part A

JM Part B

JM Home Health & Hospice


Railroad Medicare Providers

Railroad Medicare Beneficiaries

National Supplier Clearinghouse