NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr Alexander M Timchak LLC

Psychiatry Physician in Northbrook, IL · enumerated 2014 · authorized official Alexander Timchak, Manager.

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

National Provider Identifier

1578980876

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Dr Alexander M Timchak LLC
Practice address 60 Revere Dr Ste 100, Northbrook, IL, 60062
Phone (708) 207-4580
Enumeration date Mar 25, 2014
Last updated in NPPES Mar 25, 2014

Taxonomy & classification

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 336090545 (IL) Primary
2084P0804X Child & Adolescent Psychiatry Physician Allopathic & Osteopathic Physicians · License 336090545 (IL) Secondary

Authorized official

Name Alexander Timchak
Title Manager
Phone (708) 207-4580

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 Dr Alexander M Timchak LLC?
The NPI for Dr Alexander M Timchak LLC is 1578980876, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Dr Alexander M Timchak LLC?
NPPES lists Alexander Timchak (Manager) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-25.