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Tzam Diagnostics LLC

Clinical Medical Laboratory in Northbrook, IL · enumerated 2008 · authorized official Hongjun Zhang, Vice President.

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

National Provider Identifier

1285887372

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Registry record

Entity type Organization (Type 2)
Legal business name Tzam Diagnostics LLC
Other name <Unavail>
Practice address 1880 Holste Rd, Northbrook, IL, 60062
Phone (847) 256-3238
Fax (847) 256-3239
Enumeration date Nov 3, 2008
Last updated in NPPES Dec 12, 2014

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories · License 14D1039167 (IL) Primary

Authorized official

Name Hongjun Zhang
Title Vice President
Phone (847) 256-3238

Other identifiers

Identifier Type State Issuer
IL1662 Other IL MEDICARE PTAN
01629156 Other IL BCBS PROVIDER #

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.

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Frequently asked questions

What is the NPI number for Tzam Diagnostics LLC?
The NPI for Tzam Diagnostics LLC is 1285887372, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Tzam Diagnostics LLC?
NPPES lists Hongjun Zhang (Vice President) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-12.