Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Agnieszka Kowalczyk

Pediatric Sports Medicine Physician in Boston, MA · enumerated 2014.

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

National Provider Identifier

1205243078

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Registry record

Entity type Individual (Type 1)

Name Dr. Agnieszka Kowalczyk

Sex Female

Practice address 319 Longwood Ave, Boston, MA, 02115

Phone (617) 355-3501

Enumeration date Jul 14, 2014

Last updated in NPPES Aug 14, 2017

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 125065742 (IL) Secondary

2080S0010X Pediatric Sports Medicine Physician Allopathic & Osteopathic Physicians · License 270843 (MA) 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

What is the NPI number for Agnieszka Kowalczyk?

The National Provider Identifier (NPI) for Agnieszka Kowalczyk is 1205243078, a Type 1 (individual) record in the CMS NPPES registry.

Where does Agnieszka Kowalczyk practice?

The practice location on file with NPPES is in Boston, MA. 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 2017-08-14.