How are suppliers chosen to revalidate?

Suppliers are required to revalidate (formerly re-enroll) every three years. Beginning Fall 2016, CMS now selects and establishes due dates by which providers and suppliers are required to revalidate. CMS created a lookup tool on posting the due dates online for providers and suppliers to review. The supplier will receive a revalidation letter prompting them to update information in the Internet-based PECOS system.

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