Mark J Friedman MD

Mark J Friedman MD is a healthcare organization registered as Psychiatry Physician in Glenview, IL, holding Type 2 (organization) NPI 1932652377 since 2016. The authorized official on file is Roman Hnatiw, Acct Manager.

✓ Active NPI ✓ Valid NPI checksum

NPI	1932652377
Entity type	Organization (Type 2)
Legal business name	Mark J Friedman MD
Practice address	400 WILMETTE AVE, Glenview, IL, 60025
Phone	6302411495
Fax	6302411543
Enumeration date	2016-08-03
Last updated in NPPES	2016-08-03

Authorized official

Name	Roman Hnatiw
Title	Acct Manager
Phone	6302411495

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
2084P0800X	Psychiatry Physician	Primary	036103961	IL

Other identifiers

Identifier	Type	State	Issuer
036103961	Medicaid	IL	—

Copy-ready billing details

Provider: Mark J Friedman MD
NPI: 1932652377
Taxonomy: 2084P0800X (Psychiatry Physician)
Address: 400 WILMETTE AVE, Glenview, IL, 60025

Verify this record

Cross-check NPI 1932652377 against the authoritative CMS record: view Mark J Friedman MD 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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2016-08-03. Verify at npiregistry.cms.hhs.gov.

Where is Mark J Friedman MD located?

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

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-08-03.