Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Heather Nguyen, DMD

General Practice Dentistry in Holliston, MA · enumerated 2007 · practices at Delima & Nguyen, D.M.D..

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

National Provider Identifier

1417139387

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Registry record

Entity type Individual (Type 1)

Name Dr. Heather Nguyen

Credential DMD

Sex Female

Practice address 71 Charles Street, Holliston, MA, 01746

Phone (508) 429-5500

Fax (508) 429-3413

Enumeration date Dec 3, 2007

Last updated in NPPES Dec 3, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 20032 (MA) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

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

Where does Heather Nguyen practice?

The practice location on file with NPPES is in Holliston, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Heather Nguyen?

The National Provider Identifier (NPI) for Heather Nguyen is 1417139387, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Delima & Nguyen, D.M.D. General Practice Dentistry · Holliston, MA NPI 1639243256

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-03.