Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Christopher William Witzlib

Bus in Port Washington, WI · enumerated 2024.

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

National Provider Identifier

1962227017

Verified

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Registry record

Entity type Individual (Type 1)

Name Mr. Christopher William Witzlib

Sex Male

Practice address Port Washington, WI, 53074

Phone (414) 559-6779

Fax (262) 268-1693

Enumeration date Nov 22, 2024

Last updated in NPPES Nov 22, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

347B00000X Bus Transportation Services 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 Christopher Witzlib?

Christopher Witzlib is registered in NPPES with the primary taxonomy of Bus. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-22.