Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. DIEM D NGUYEN MD
NPI 1609858018
Family Medicine in Williamsburg, VA

Q: What is Diem Nguyen's NPI number?

The NPI number for Diem Nguyen is 1609858018. It was assigned to this individual provider in the NPPES registry on November 19, 2005.

Q: What is Diem Nguyen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Diem Nguyen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 19, 2005

EASTERN STATE HOSPITAL 4601 IRONBOUND RD., WILLIAMSBURG, VA 23187(757) 253-7434(757) 253-4564 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Diem D Nguyen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. DIEM D NGUYEN MD (NPI 1609858018) is an individual family medicine provider in Williamsburg, Virginia, licensed in Virginia (VA01010411157) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1609858018

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. DIEM D NGUYENCredential: MD

Location AddressEASTERN STATE HOSPITAL 4601 IRONBOUND RD.Williamsburg, VA 23187-8791

Mailing Address3024 Whittaker Island RdWilliamsburg, VA 23185-7669 · (757) 253-6531

Phone(757) 253-7434

Fax(757) 253-4564

Sole ProprietorNo

Enumeration DateNovember 19, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1609858018 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in VA · VA01010411157

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

EASTERN STATE HOSPITAL 4601 IRONBOUND RD., Williamsburg, VA 23187

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diem Nguyen's NPI number?

The NPI number for Diem Nguyen is 1609858018. It was assigned to this individual provider in the NPPES registry on November 19, 2005.

Where is Diem Nguyen located?

Diem Nguyen practices at Eastern State Hospital 4601 Ironbound Rd., Williamsburg, VA 23187. The listed phone number is (757) 253-7434.

What is Diem Nguyen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

When was this NPI record last updated?

The NPPES record for Diem Nguyen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.