Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John A Kazmierowski, MD

Dermatology Physician in Lake Oswego, OR · enumerated 2005.

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

National Provider Identifier

1023013984

Verified

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Registry record

Entity type Individual (Type 1)

Name Dr. John A Kazmierowski

Credential MD

Sex Male

Practice address 18405 Deer Oak Ave, Lake Oswego, OR, 97035

Phone (503) 799-8086

Enumeration date Jun 16, 2005

Last updated in NPPES Jul 19, 2022

Taxonomy & licenses

207ND0900X Dermatopathology Physician Allopathic & Osteopathic Physicians · License MD10203 (OR) Secondary

207NI0002X Clinical & Laboratory Dermatological Immunology Physician Allopathic & Osteopathic Physicians · License MD10203 (OR) Secondary

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License MD10203 (OR) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License MD10203 (OR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
006833	Medicaid	OR	-

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 John Kazmierowski?

The National Provider Identifier (NPI) for John Kazmierowski is 1023013984, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Kazmierowski practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-19.