Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Massachusetts Em-1 Medical Services

Physician Assistant in Holyoke, MA · enumerated 2007 · authorized official Gregory Byrne, Authorized Official.

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

National Provider Identifier

1265620017

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Registry record

Entity type Organization (Type 2)

Legal business name Massachusetts Em-1 Medical Services

Practice address 575 Beech St, Holyoke, MA, 01040

Phone (413) 534-2500

Enumeration date Oct 5, 2007

Last updated in NPPES Oct 5, 2007

Taxonomy & classification

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

Authorized official

Name Gregory Byrne

Title Authorized Official

Phone (214) 712-2000

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-10-05. Verify at npiregistry.cms.hhs.gov.

Where is Massachusetts Em-1 Medical Services located?

The practice location on file with NPPES is in Holyoke, MA.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-05.