PECOS
The page asks the public CMS data API for that NPI and shows the row it returns. It does not submit an enrollment and it does not change PECOS.
Source: CMS Medicare provider enrollment data, data.cms.gov. Page read October 14, 2026.
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Definition
PECOS
PECOS is the Provider Enrollment, Chain, and Ownership System. Medicare providers and suppliers use it to enroll, revalidate, and update their enrollment. A public CMS dataset reports enrollment rows by NPI. A missing row on a lookup page is not a decision that someone is unenrolled. The lookup is at /medicare-enrollment-lookup.
Questions
PECOS, answered
Can this page enroll a provider?
No. Enrollment is done in PECOS. This page only shows a public enrollment row when CMS returns one.