Adds pure local validators for the 10-digit NPI Luhn checksum (CMS-
published algorithm with the '80840' NPPES prefix) and 9-digit EIN
format (rejects reserved prefixes 00/07/80-89). No NPPES round-trip,
no IRS e-file lookup — catches the 99% typo case at parse time.
Surface:
- cyclone.npi.is_valid_npi / is_valid_tax_id / normalize_tax_id
- CLI: 'cyclone validate-npi <npi>' and 'cyclone validate-tax-id <ein>'
- API: GET /api/admin/validate-provider?npi=&tax_id=
- Parser validator: new R021_npi_checksum rule (warning, not error,
to keep test fixtures with placeholder NPIs ingestible)
- minimal_837p.txt fixture NPI updated from '1234567890' to the
Luhn-valid '1993999998' so strict-mode CLI parses still pass
Tests:
- test_npi.py — 27 cases (Luhn math, valid/invalid NPIs, EIN cases,
normalize_tax_id edge cases)
- test_api_validate_provider.py — 4 cases (both valid, both invalid,
omitted NPI, omitted tax_id)
- test_cli_validate.py — 8 cases (valid/invalid for both subcommands,
exit codes, malformed inputs)
- test_validator.py — 4 new R021 cases (valid Luhn silent, bad Luhn
warning, skipped when format bad, skipped when NPI missing)
Total: 923 tests pass.
Tyler
1942a22629