Data sources & freshness
Everything here is built from public-domain federal data. We don't add opinions, ratings, or medical advice — only the registry and payment facts, each with the date of the file it came from. Below is every source and when it last refreshed.
| Source | Refresh cadence | Source file date |
|---|---|---|
| NPPES — National Plan & Provider Enumeration System The NPI registry itself: every provider’s NPI, legal name, taxonomy, addresses, and other identifiers. | Monthly full file + weekly incrementals | Jul 26, 2026 |
| NUCC Health Care Provider Taxonomy The 800+ specialty/taxonomy codes and their official definitions. | Twice a year | — no file date published; we last checked Jul 26, 2026 |
| CMS Medicare Physician & Other Practitioners Per-provider and per-service Medicare payment totals (beneficiaries, services, submitted / allowed / paid amounts). | Annual | Jan 1, 2024 |
| CMS Order & Referring Which providers are eligible to order and refer under Medicare (Part B, DME, home health, and more). | Weekly | — no file date published; we last checked Jul 28, 2026 |
| CMS Opt-Out Affidavits Providers who have formally opted out of Medicare, with effective dates. | Quarterly | — no file date published; we last checked Jul 26, 2026 |
How we handle the data
- We reproduce the source files as-is; we don't edit provider records.
- Every profile shows the source dates so you can judge how current it is.
- To correct the underlying data, update your record at the source (NPPES) directly.
Not affiliated with CMS, NPPES, NUCC, or any government agency. Source names and links are for attribution only.