Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aleksander W Pecherek, DO

Physical Medicine & Rehabilitation Physician in Chicago, IL · enumerated 2018.

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

National Provider Identifier

1619478229

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Registry record

Entity type Individual (Type 1)

Name Aleksander W Pecherek

Credential DO

Sex Male

Practice address 6438 N Milwaukee Ave, Chicago, IL, 60631

Phone (779) 946-2225

Fax (773) 763-9368

Enumeration date Feb 28, 2018

Last updated in NPPES Oct 10, 2025

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 036167636 (IL) Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

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

Other identifiers

Identifier	Type	State	Issuer
036167636	Other	IL	LICENSE
OS17128	Other	FL	LICENSE

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

Is NPI 1619478229 active?

Yes, as of the latest NPPES snapshot, NPI 1619478229 is active (record last updated 2025-10-10).

How do I verify Aleksander Pecherek's NPI record?

Cross-check NPI 1619478229 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Albert Pecherek Family Medicine Physician · Chicago, IL NPI 1922147024 Albert Pecherek Sc. Family Medicine Physician · Chicago, IL NPI 1144493255 Dr. Peaches Pllc Physical Medicine & Rehabilitation Physician · Chicago, IL NPI 1902786239

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-10.