Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Quest Diagnostics LLC

Q: What type of organization is Quest Diagnostics LLC?

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

Clinical Medical Laboratory in Fall River, MA · enumerated 2024 · authorized official Leah Timmerman, Sr. Vice President.

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

National Provider Identifier

1760221592

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Registry record

Entity type Organization (Type 2)

Legal business name Quest Diagnostics LLC

Practice address 851 Middle St Ste 2100, Fall River, MA, 02721

Phone (508) 961-0831

Enumeration date May 21, 2024

Last updated in NPPES May 15, 2025

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Leah Timmerman

Title Sr. Vice President

Phone (973) 520-2700

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 LLC?

Quest Diagnostics LLC 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 2025-05-15.