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PropertyData for May 2026
usNPI
Estimated domains
< 1K
Description
A National Provider Identifier (NPI) is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services.
Definition from the Schema.org vocabulary (English).
Trend over time
At least two months are needed to show a trend. The series will grow with every monthly update.
Used on types
Tiers indicate the number of unique domains using the term. They are intentionally approximate to reduce noise and protect site privacy. How to read the data.