Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum
Duilio Valdivia MD PC
Hematology & Oncology Physician in Lewistown, PA · enumerated 2007 · authorized official Duilio Valdivia, President.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750418943
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Registry record
Taxonomy & classification
Authorized official
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0400572 | Other | PA | BLUE SHIELD |
| 400572 | Other | PA | RAILROAD MEDICARE |
| 6988 | Other | PA | GEISINGER SPECIALIST |
| 000928225 | Medicaid | PA | - |
| 50047378 | Other | PA | CBC SP |
| 13837 | Other | PA | GMG |
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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Providers at this address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-01.