NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Shale Marks LLC

Addiction (Substance Use Disorder) Counselor in Buffalo Grove, IL · enumerated 2024 · authorized official Ewa Rozek, Manager.

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

National Provider Identifier

1710730908

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Shale Marks LLC
Practice address 355 W Dundee Rd Ste 110, Buffalo Grove, IL, 60089
Phone (847) 337-1960
Enumeration date Apr 8, 2024
Last updated in NPPES Apr 8, 2024

Taxonomy & classification

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name Ewa Rozek
Title Manager
Phone (847) 337-1960

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

Where is Shale Marks LLC located?
The practice location on file with NPPES is in Buffalo Grove, IL.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2024-04-08. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-08.