Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Eric David Libby, M.D.
Gastroenterology Physician in Winchester, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1922048016
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 303380 | Other | - | HARVARD PILGRIM HEALTH |
| J30490 | Other | MA | BLUE CROSS & BLUE SHIELD |
| 509647 | Other | MA | US HEALTH |
| 079352 | Other | MA | TUFTS HEALTH |
| 3126072 | Medicaid | MA | - |
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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Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-06.