Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Elfrida Zakrzewski, MPT

Physical Therapist in Milwaukee, WI · enumerated 2016.

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

National Provider Identifier

1861947814

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Registry record

Entity type Individual (Type 1)

Name Mrs. Elfrida Zakrzewski

Credential MPT

Sex Female

Practice address 2801 W Kinnickinnic River Pkwy Ste 250, Milwaukee, WI, 53215

Phone (414) 649-6732

Fax (414) 649-5840

Enumeration date Aug 19, 2016

Last updated in NPPES Sep 16, 2025

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 9721 (WI) Primary

Other identifiers

Identifier	Type	State	Issuer
100060409	Medicaid	WI	-

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

How do I verify Elfrida Zakrzewski's NPI record?

Cross-check NPI 1861947814 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861947814 active?

Yes, as of the latest NPPES snapshot, NPI 1861947814 is active (record last updated 2025-09-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-16.