Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Theratest Laboratories, Inc.

Clinical Medical Laboratory in Lombard, IL · enumerated 2005 · authorized official Marius Teodorescu, President and Ceo.

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

National Provider Identifier

1902803554

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Registry record

Entity type Organization (Type 2)

Legal business name Theratest Laboratories, Inc.

Practice address 1111 N Main St, Lombard, IL, 60148

Phone (630) 627-6069

Fax (630) 627-4231

Enumeration date Jun 28, 2005

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories · License 2087-8990 TLV (IL) Primary

Authorized official

Name Marius Teodorescu

Title President and Ceo

Phone (630) 627-6069

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 is Theratest Laboratories, Inc. located?

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Marius Teodorescu Internal Medicine Physician · Lombard, IL NPI 1326348970

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.