Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Midwest Diagnostics Inc

Q: What type of organization is Midwest Diagnostics Inc?

Midwest Diagnostics Inc is registered in NPPES as a Physiological Laboratory (its primary provider taxonomy).

Physiological Laboratory in Hazel Crest, IL · enumerated 2008 · authorized official Sandie Napientek, Payer Contracting.

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

National Provider Identifier

1932386760

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Registry record

Entity type Organization (Type 2)

Legal business name Midwest Diagnostics Inc

Practice address 3330 W 177th St, Suite 2c, Hazel Crest, IL, 60429

Phone (170) 879-9114

Enumeration date Jan 23, 2008

Last updated in NPPES May 21, 2009

Taxonomy & classification

293D00000X Physiological Laboratory Laboratories · License 036074003 (IL) Primary

Authorized official

Name Sandie Napientek

Title Payer Contracting

Phone (630) 399-5940

Other identifiers

Identifier	Type	State	Issuer
01638865	Other	IL	BLUE CROSS BLUE SHIELD

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 a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Midwest Diagnostics Inc?

Midwest Diagnostics Inc is registered in NPPES as a Physiological Laboratory (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-21.