Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Anna Kathryn Pfeiffer, PA-C

Physician Assistant in Oak Lawn, IL · enumerated 2025.

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

National Provider Identifier

1295614683

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Registry record

Entity type Individual (Type 1)

Name Anna Kathryn Pfeiffer

Credential PA-C

Sex Female

Practice address 9921 Southwest Hwy, Oak Lawn, IL, 60453

Phone (708) 499-5678

Enumeration date Aug 29, 2025

Last updated in NPPES Nov 25, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085011625 (IL) 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.

Read the full guide → Validate an NPI →

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 Anna Pfeiffer?

Anna Pfeiffer is registered in NPPES with the primary taxonomy of Physician Assistant. 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 2025-11-25.