Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Allison M. Ledoux, M.D.
Family Medicine Physician in Norwell, MA · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1366889933
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 04-2297845 | Other | - | MULTI-PLAN |
| 042297845 | Other | - | TRICARE |
| 042297845 | Other | - | UNITED HEALTH CARE |
| 571665 | Other | MA | TUFTS AND TMP |
| AA499832 | Other | MA | HARVARD PILGRIM |
| 110115835A | Medicaid | MA | - |
| 1782498 | Other | - | CIGNA |
| 1366889933 | Other | MA | BCBSMA |
| 1366889933 | Other | MA | NHP |
| 1366889933 | Other | MA | FALLON HEALTH CARE |
| 042297845 | Other | - | GIC |
| 4194779 | Other | - | AETNA |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-20.