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John Witczak, Do, PC

Q: What is the NPI number for John Witczak, Do, PC?

The NPI for John Witczak, Do, PC is 1043303027, a Type 2 (organization) record in the CMS NPPES registry.

Orthopaedic Surgery Physician in Mission Viejo, CA · enumerated 2006 · authorized official John Witczak, Ceo President.

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

National Provider Identifier

1043303027

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Registry record

Entity type Organization (Type 2)

Legal business name John Witczak, Do, PC

Practice address 26921 Crown Valley Pkwy, Suite 201, Mission Viejo, CA, 92691

Phone (949) 348-2250

Fax (949) 348-8904

Enumeration date Oct 2, 2006

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 20A4682 (CA) Primary

Authorized official

Name John Witczak

Title Ceo President

Phone (949) 348-2250

Other identifiers

Identifier	Type	State	Issuer
20A4682	Other	CA	LICENSE

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for John Witczak, Do, PC?

NPPES lists John Witczak (Ceo President) as the authorized official for this organization.

What is the NPI number for John Witczak, Do, PC?

The NPI for John Witczak, Do, PC is 1043303027, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.