What is Dieu-Thi Nguyen's NPI number?

Dieu-Thi Nguyen's National Provider Identifier (NPI) is 1134419419, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Dieu-Thi Nguyen's specialty?

Dieu-Thi Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Dieu-Thi Nguyen located?

Dieu-Thi Nguyen's practice location on file with NPPES is 14139 Potomac Mills Rd, Woodbridge, VA 22192-4644.

What is Dieu-Thi Nguyen's phone number?

The practice phone number listed in the NPPES registry for Dieu-Thi Nguyen is (703) 490-8400.

Does Dieu-Thi Nguyen accept Medicare?

Dieu-Thi Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Dieu-Thi Nguyen's NPI active?

Yes — Dieu-Thi Nguyen's NPI (1134419419) is active in the NPPES registry as of the last update on 2021-05-27.

IndividualActiveAccepts Medicare

Dieu-Thi Nguyen, M.D.

NPI 1134419419 · Internal Medicine Physician · Woodbridge, VA

Dieu-Thi Nguyen, M.D. is a Internal Medicine Physician provider in Woodbridge, VA (NPI 1134419419).

Provider details

NPI number: 1134419419
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Female
Sole proprietor: No
License: 0101256365 (VA)

Practice location

14139 Potomac Mills Rd

Woodbridge, VA 22192-4644

Phone: (703) 490-8400

Street-level locationGet directions

More VA providers

Mailing address

14139 Potomac Mills Rd

Woodbridge, VA 22192-4644

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 0101256365 (VA)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(82/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
15 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 68 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	421	146
Losartan Potassium	238	75
Amlodipine Besylate	179	65
Lisinopril	142	46
Metformin Hclbrand: Metformin Hcl Er	118	41
Levothyroxine Sodium	118	36
Simvastatin	95	29
Gabapentin	88	41
Azelastine Hcl	80

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2011-04-07
Last updated: 2021-05-27
Certified: 2021-05-27

Frequently asked questions

What is Dieu-Thi Nguyen's NPI number?: Dieu-Thi Nguyen's National Provider Identifier (NPI) is 1134419419, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Dieu-Thi Nguyen's specialty?: Dieu-Thi Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
Where is Dieu-Thi Nguyen located?: Dieu-Thi Nguyen's practice location on file with NPPES is 14139 Potomac Mills Rd, Woodbridge, VA 22192-4644.
What is Dieu-Thi Nguyen's phone number?: The practice phone number listed in the NPPES registry for Dieu-Thi Nguyen is (703) 490-8400.
Does Dieu-Thi Nguyen accept Medicare?: Dieu-Thi Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Dieu-Thi Nguyen's NPI active?: Yes — Dieu-Thi Nguyen's NPI (1134419419) is active in the NPPES registry as of the last update on 2021-05-27.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider prescribes (Medicare Part D)