Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Damian Olejarski, DO

Family Medicine Physician in Westchester, IL · enumerated 2020 · practices at Tdk Family Medical Centers LLC.

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

National Provider Identifier

1679103972

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Registry record

Entity type Individual (Type 1)

Name Damian Olejarski

Credential DO

Sex Male

Practice address 2434 Wolf Rd, Westchester, IL, 60154

Phone (708) 562-5430

Enumeration date Jan 25, 2020

Last updated in NPPES Jul 10, 2024

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036-166866 (IL) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Damian Olejarski?

The National Provider Identifier (NPI) for Damian Olejarski is 1679103972, a Type 1 (individual) record in the CMS NPPES registry.

Where does Damian Olejarski practice?

The practice location on file with NPPES is in Westchester, IL. 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 2024-07-10.