Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Harborside Massachusetts Limited Partnership

Skilled Nursing Facility in Amesbury, MA · enumerated 2006 · authorized official William Mathies, President Director.

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

National Provider Identifier

1467462648

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Registry record

Entity type Organization (Type 2)

Legal business name Harborside Massachusetts Limited Partnership

Other name <Unavail>

Parent organization Sunbridge Healthcare Corporation

Practice address 6 Morrill Pl, Amesbury, MA, 01913

Phone (978) 338-3500

Fax (978) 338-4346

Enumeration date Aug 9, 2006

Last updated in NPPES Oct 1, 2009

Taxonomy & classification

314000000X Skilled Nursing Facility Nursing & Custodial Care Facilities · License 0714 (MA) Primary

Authorized official

Name William Mathies

Title President Director

Phone (505) 821-3355

Other identifiers

Identifier	Type	State	Issuer
0940089	Medicaid	MA	-
30102767	Medicaid	NH	-

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 the NPI number for Harborside Massachusetts Limited Partnership?

The NPI for Harborside Massachusetts Limited Partnership is 1467462648, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Harborside Massachusetts Limited Partnership?

NPPES lists William Mathies (President Director) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-10-01.