Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

John Michael Maslowski, RRA.

Radiology Practitioner Assistant in New York, NY · enumerated 2013.

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

National Provider Identifier

1902231129

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Registry record

Entity type Individual (Type 1)

Name John Michael Maslowski

Credential RRA.

Sex Male

Practice address New York, NY, 10065

Phone (262) 719-4933

Enumeration date Sep 6, 2013

Last updated in NPPES Sep 6, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

243U00000X Radiology Practitioner Assistant Technologists, Technicians & Other Technical Service Providers · License 454726 (NY) 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.

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Frequently asked questions

Where does John Maslowski practice?

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

What is the NPI number for John Maslowski?

The National Provider Identifier (NPI) for John Maslowski is 1902231129, 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 2013-09-06.