Your list · your numbers · no account

Stop comparing claims. Measure us on your own list.

Paste up to 100 NPIs you already hold. You will get the fill rate for every field we could put beside them, the trust tier on each work email, and how recently each record was last confirmed - counted over your list, by the same engine that fills a file when you send us one. Nothing is revealed and nothing is charged.

Your list

One per line, or separated by commas - any run of ten digits is read as an NPI. Between 10 and 100 of them. We check the identifier’s own check digit, drop repeats, and tell you how many of each there were.
A CSV or TSV with a column of NPIs - the other columns are ignored. We find the NPI column the same way our append tool does, and the result says which one we read. A spreadsheet needs saving as CSV first: this form takes text only.

By pressing this you are asking us to count what we hold for those identifiers. You are not creating an account, joining a mailing list or agreeing to anything.