Alexander Timchak MD LLC

Alexander Timchak MD LLC is a healthcare organization registered as Psychiatry Physician in Northbrook, IL, holding Type 2 (organization) NPI 1891113734 since 2014. The authorized official on file is Alexander Timchak, Manager.

✓ Active NPI ✓ Valid NPI checksum

NPI	1891113734
Entity type	Organization (Type 2)
Legal business name	Alexander Timchak MD LLC
Practice address	60 REVERE DR STE 100, Northbrook, IL, 60062
Phone	7082074580
Enumeration date	2014-03-28
Last updated in NPPES	2014-03-28

Authorized official

Name	Alexander Timchak
Title	Manager
Phone	7082074580

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
2084P0804X	Child & Adolescent Psychiatry Physician	Secondary	336090545	IL
2084P0800X	Psychiatry Physician	Primary	336090545	IL

Copy-ready billing details

Provider: Alexander Timchak MD LLC
NPI: 1891113734
Taxonomy: 2084P0800X (Psychiatry Physician)
Address: 60 REVERE DR STE 100, Northbrook, IL, 60062

Providers at this address

NPI	Name	Type	Specialty	Location
1386796027	Joseph Serio	Individual	Mental Health Counselor	Northbrook, IL
1669524369	Jennifer Kurth	Individual	Psychiatry Physician	Northbrook, IL
1174752000	Alexander Timchak	Individual	Psychiatry Physician	Northbrook, IL
1184949380	Deepali Gershan	Individual	Addiction Psychiatry Physician	Northbrook, IL
1720307366	Laura Rusch	Individual	Clinical Psychologist	Northbrook, IL
1073874459	Vijay Vivek Khilanani-MD-LLC	Organization	Psychiatry Physician	Northbrook, IL
1275894248	Vijay V Khilanani-MD-LLC	Organization	Psychiatry Physician	Northbrook, IL
1578980876	Dr Alexander M Timchak LLC	Organization	Psychiatry Physician	Northbrook, IL

Verify this record

Cross-check NPI 1891113734 against the authoritative CMS record: view Alexander Timchak MD LLC on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where is Alexander Timchak MD LLC located?

The practice location on file with NPPES is in Northbrook, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2014-03-28. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2014-03-28.