Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mass Histology Service, Inc.

Q: What is the NPI number for Mass Histology Service, Inc.?

The NPI for Mass Histology Service, Inc. is 1871951897, a Type 2 (organization) record in the CMS NPPES registry.

Clinical Medical Laboratory in Worcester, MA · enumerated 2016 · authorized official James Staruk, President.

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

National Provider Identifier

1871951897

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Mass Histology Service, Inc.

Practice address 7 Lenora St, Worcester, MA, 01607

Phone (508) 757-4800

Enumeration date Feb 4, 2016

Last updated in NPPES Feb 4, 2016

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name James Staruk

Title President

Phone (508) 757-4800

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

Who is the authorized official for Mass Histology Service, Inc.?

NPPES lists James Staruk (President) as the authorized official for this organization.

What is the NPI number for Mass Histology Service, Inc.?

The NPI for Mass Histology Service, Inc. is 1871951897, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-02-04.