Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Hallmark Pathology, P.C.

Specialist in Melrose, MA · enumerated 2006 · authorized official Michael Grattendick, Treasurer.

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

National Provider Identifier

1467429407

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Registry record

Entity type Organization (Type 2)

Legal business name Hallmark Pathology, P.C.

Practice address 585 Lebanon St, Melrose, MA, 02176

Phone (781) 979-3135

Fax (770) 666-9305

Enumeration date Mar 8, 2006

Last updated in NPPES Sep 15, 2015

Taxonomy & classification

174400000X Specialist Other Service Providers · License 22D0077627 (MA) Primary

Authorized official

Name Michael Grattendick

Title Treasurer

Phone (561) 626-5512

Other identifiers

Identifier	Type	State	Issuer
9783156	Medicaid	MA	-
M20510	Other	MA	PTAM

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 2015-09-15. Verify at npiregistry.cms.hhs.gov.

Where is Hallmark Pathology, P.C. located?

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

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-09-15.