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Lexigram vs NPPES

Same instrument, two spec sheets — measured, not claimed.

APILexigramNEW—NPPESNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedU.S. Government (public NPI data)
Free tierFree tier — key may be requiredFree — no key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Lexigram vs NPPES: common questions

Which is more reliable, Lexigram or NPPES?

On our scheduled checks, NPPES leads on measured uptime — Lexigram at —% versus NPPES at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Lexigram and NPPES need an API key?

NPPES needs no key, while Lexigram requires a free API key. If you want to start calling without signup, reach for NPPES first.

Can I call Lexigram and NPPES from the browser?

Neither sends browser-friendly CORS headers reliably, so call Lexigram and NPPES from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Lexigram and NPPES free for commercial use?

Lexigram has unclear commercial terms, and NPPES allows commercial use on its free tier. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.