Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Quest Diagnostics Incorporated

Q: What type of organization is Quest Diagnostics Incorporated?

Quest Diagnostics Incorporated is registered in NPPES as a Clinical Medical Laboratory (its primary provider taxonomy).

Clinical Medical Laboratory in Midlothian, VA · enumerated 2025 · authorized official Leah Timmerman, Vice President.

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

National Provider Identifier

1609676352

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Registry record

Entity type Organization (Type 2)

Legal business name Quest Diagnostics Incorporated

Parent organization Quest Diagnostics Incorporated

Practice address 1807 Huguenot Rd Ste 122, Midlothian, VA, 23113

Phone (804) 594-3629

Enumeration date Mar 13, 2025

Last updated in NPPES Mar 13, 2025

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Leah Timmerman

Title Vice President

Phone (973) 520-2700

Other identifiers

Identifier	Type	State	Issuer
49D2319490	Other	VA	CLIA

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 Quest Diagnostics Incorporated?

Quest Diagnostics Incorporated is registered in NPPES as a Clinical Medical Laboratory (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-13.