Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gordon Thompson Caldwell Jr., MD
Pain Medicine Physician in Lewiston, ME · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1376510057
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 030495 | Other | - | BCBS |
| 010424957 | Other | - | CHAMPUS |
| M52001 | Other | - | CIGNA |
| E19633 | Other | - | HARVARD PILGRIM |
| 010424957 | Other | - | EMPLOY STANDARDS |
| 010424957 | Other | - | TRICARE |
| 2075723 | Other | - | AETNA |
| 25012128 | Other | - | MEDICARE RAILROAD |
| 272410099 | Medicaid | ME | - |
| 010424957 | Other | - | STANDARD TAX ID |
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.
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-28.