Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexander Tobias Michalak

Physician Assistant in Kansas City, MO · enumerated 2024.

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

National Provider Identifier

1538915921

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Registry record

Entity type Individual (Type 1)

Name Alexander Tobias Michalak

Sex Male

Practice address 4401 Wornall Rd, Kansas City, MO, 64111

Phone (816) 932-3679

Enumeration date Apr 25, 2024

Last updated in NPPES Mar 12, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 2024039616 (MO) 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

Where does Alexander Michalak practice?

The practice location on file with NPPES is in Kansas City, MO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Alexander Michalak?

The National Provider Identifier (NPI) for Alexander Michalak is 1538915921, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-12.