NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mari Brzostowski, LCPC

Mental Health Counselor in Arlington Heights, IL · enumerated 2006.

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

National Provider Identifier

1023110327

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mari Brzostowski
Credential LCPC
Sex Female
Practice address 3436 N Kennicott Ave, Arlington Heights, IL, 60004
Phone (847) 952-7460
Fax (847) 222-1754
Enumeration date Sep 5, 2006
Last updated in NPPES Jul 2, 2020

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 180-005698 (IL) Secondary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 180005698 (IL) Primary

Other identifiers

Identifier Type State Issuer
36-3045007 Other - TAX ID#

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 does Mari Brzostowski practice?
The practice location on file with NPPES is in Arlington Heights, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mari Brzostowski?
The National Provider Identifier (NPI) for Mari Brzostowski is 1023110327, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-02.