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Quest Diagnostics Massachusetts LLC

Clinical Medical Laboratory in Worcester, MA · enumerated 2013 · authorized official David Betz, Director.

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

National Provider Identifier

1619313863

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Registry record

Entity type Organization (Type 2)
Legal business name Quest Diagnostics Massachusetts LLC
Parent organization Quest Diagnostics LLC Ma
Practice address 191 May St, Worcester, MA, 01602
Phone (508) 852-0600
Enumeration date May 15, 2013
Last updated in NPPES Dec 10, 2018

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name David Betz
Title Director
Phone (412) 920-7774

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2018-12-10. Verify at npiregistry.cms.hhs.gov.
Where is Quest Diagnostics Massachusetts LLC located?
The practice location on file with NPPES is in Worcester, MA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-12-10.