Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. JAMES CHMIELEWSKI LCPC
NPI 1578533592
Counselor - Addiction (Substance Use Disorder) in Oak Park, IL

Q: What is James Chmielewski's NPI number?

The NPI number for James Chmielewski is 1578533592. It was assigned to this individual provider in the NPPES registry on January 23, 2006.

Q: What is James Chmielewski's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

Q: When was this NPI record last updated?

The NPPES record for James Chmielewski was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 23, 2006

803 N HARLEM AVE, OAK PARK, IL 60302(773) 430-9519(773) 889-2340 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Mr. James Chmielewski Lcpc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. JAMES CHMIELEWSKI LCPC (NPI 1578533592) is an individual addiction (substance use disorder) provider in Oak Park, Illinois, licensed in Illinois (172268) and active in the NPI registry since January 2006.

NPPES Registry Identity

NPI1578533592

Entity TypeIndividualMale

Primary Taxonomy101YA0400X

Provider Legal NameMR. JAMES CHMIELEWSKICredential: LCPC

Location Address803 N HARLEM AVEOak Park, IL 60302-1698

Mailing Address1946 N Natoma AveChicago, IL 60707-3920 · (773) 430-9519 · Fax (773) 889-2340

Phone(773) 430-9519

Fax(773) 889-2340

Sole ProprietorNo

Enumeration DateJanuary 23, 2006

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1578533592 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers

Taxonomy Code101YA0400X

License✔ Licensed in IL · 172268

Also ListedCounselor · ProfessionalTaxonomy 101YP2500X

803 N HARLEM AVE, Oak Park, IL 60302

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Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. LINDA A. ENNIS M.S.W., L.C.S.W.

Social Worker (Clinical)

803 N HARLEM AVE, SUITE 2 S
OAK PARK, IL 60302

Cook County (708) 445-8182

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Chmielewski's NPI number?

The NPI number for James Chmielewski is 1578533592. It was assigned to this individual provider in the NPPES registry on January 23, 2006.

Where is James Chmielewski located?

James Chmielewski practices at 803 N Harlem Ave, Oak Park, IL 60302. The listed phone number is (773) 430-9519.

What is James Chmielewski's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for James Chmielewski was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.