Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marek J. Czajkowski, P.T.

Physical Therapist in Holbrook, NY · enumerated 2010.

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

National Provider Identifier

1184944498

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Registry record

Entity type Individual (Type 1)

Name Marek J. Czajkowski

Credential P.T.

Sex Male

Practice address 20 Peachtree Ct, Suite 105, Holbrook, NY, 11741

Phone (631) 467-3700

Fax (631) 467-0928

Enumeration date Jun 9, 2010

Last updated in NPPES Jun 9, 2010

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 029902 (NY) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

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

What is the NPI number for Marek Czajkowski?

The National Provider Identifier (NPI) for Marek Czajkowski is 1184944498, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marek Czajkowski practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-09.