Overview of the DMEPOS Revalidation Process


42 CFR section 424.57(e) requires the National Supplier Clearinghouse (NSC) to revalidate suppliers every three years. The NSC, acting for the Centers for Medicare & Medicaid Services (CMS), is the central entity responsible for maintaining supplier identification and ownership data, as well as other business data. Part of that responsibility requires the NSC to share this information with the Durable Medical Equipment Medicare Administrative Contractors (DME MACs) for provider relations and claims processing.

Therefore, it is imperative the NSC have the most accurate information on file. Further, the revalidation process also allows the NSC to determine if the supplier is in compliance with the supplier standards. Suppliers may revalidate via Internet-based PECOS or by downloading a CMS-855S enrollment application.

The revalidation process includes a site visit, if required. Also, workload and the time spent requesting any additional information required to complete the revalidation play a part in determining the processing time. Be sure to respond to requests for information from the NSC timely to avoid having your supplier number deactivated and having to begin the process again.

The NSC has several tools available to assist suppliers through the revalidation process. These include:

  • Numerous FAQs regarding the enrollment process

Other Tools Available to Suppliers

  • The NSC Customer Service Line (866) 238-9652:
    NSC analysts are available Monday through Friday from 9 a.m. until 5 p.m. (ET) to answer questions regarding the enrollment process. If you have questions regarding supplier specific information, please be sure an individual listed on the supplier file contacts the NSC Customer Service Line. NSC analysts will not be able to give supplier specific information to someone who is not listed on the supplier file. Spanish speaking suppliers, who cannot speak English, may leave a voicemail and a Spanish speaking analyst will return the call.
  • The NSC e-mail Address:
    If preferred, suppliers may email their questions to the NSC. Questions received will be answered timely and the NSC suggests suppliers do not submit protected health care information via e-mail.
  • Interactive Voice Response (IVR) Unit:
    The NSC Interactive Voice Response (IVR) Unit allows suppliers to obtain:
    • General information regarding the enrollment process
    • Information on the appeals process
    • Status of enrollment documentation
    • Instructions on how to obtain a CMS 855S
    • Contact information for the NSC, DME MACs and CMS

The IVR is available 24 hours a day, seven days a week (except for routine system maintenance) and can be accessed by calling the NSC Customer Service Line at (866) 238-9652.



Last Updated: 07/29/2011