Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Ludwick

Registered Nurse in Allentown, PA · enumerated 2026.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1174480545

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Registry record

Entity type Individual (Type 1)

Name John Ludwick

Sex Male

Practice address 1200 S Cedar Crest Blvd, Allentown, PA, 18103

Phone (610) 402-8000

Enumeration date Jan 7, 2026

Last updated in NPPES Jan 7, 2026

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN738059 (PA) Primary

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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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is John Ludwick?

John Ludwick is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-07.