NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Matthew T. Mulcahy, D.M.D.

Dental Clinic/Center in Nantucket, MA · enumerated 2008 · authorized official Matthew Mulcahy, Dentist.

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

National Provider Identifier

1578749750

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Matthew T. Mulcahy, D.M.D.
Practice address 9 Amelia Dr, Nantucket, MA, 02554
Fax (508) 228-4585
Enumeration date Jan 17, 2008
Last updated in NPPES Jun 16, 2008

Taxonomy & classification

261QD0000X Dental Clinic/Center Ambulatory Health Care Facilities · License 21793 (MA) Primary

Authorized official

Name Matthew Mulcahy
Title Dentist

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 Matthew T. Mulcahy, D.M.D.?
The NPI for Matthew T. Mulcahy, D.M.D. is 1578749750, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Matthew T. Mulcahy, D.M.D.?
NPPES lists Matthew Mulcahy (Dentist) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-16.