# Sources: What's in the NPI database download: NPPES file contents

Every source behind the page's figures, one row per source: its public URL, when it was retrieved or checked, whether it is included, the rows it contributed after the stated filters and de-duplication, and the reason for every exclusion. Counts below a dataset's minimum group size are withheld. The figures themselves are aggregates; the methodology gives the exact queries.

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## Registry files

| Source | URL | Retrieved | Category | Status | Rows counted | Include/exclude reason |
|---|---|---|---|---|---|---|
| CMS NPPES monthly file, September 2026 release (records to 13 September 2026) | https://download.cms.gov/nppes/NPI_Files.html | 2026-09-13 | — | included | 9798758 | included in every use |

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## Deactivation report

| Source | URL | Retrieved | Category | Status | Rows counted | Include/exclude reason |
|---|---|---|---|---|---|---|
| CMS NPPES Deactivated NPI Report (14 September 2026) | https://download.cms.gov/nppes/NPI_Files.html | 2026-09-14 | — | included | 355330 | included in every use |