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DIEU-THI THI NGUYEN M.D.
NPI 1134419419
Internal Medicine in Woodbridge, VA

Active since April 07, 2011PECOS EnrolledAccepts Medicare Assignment
14139 POTOMAC MILLS RD, WOODBRIDGE, VA 22192(703) 490-8400 Get Directions Write a Review

NPPES record last updated: May 27, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dieu-thi Thi Nguyen M.d. NPPES

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

DIEU-THI THI NGUYEN M.D. (NPI 1134419419) is an individual internal medicine provider in Woodbridge, Virginia, licensed in Virginia (0101256365) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS and is a graduate of Geisel School Of Medicine At Dartmouth (2011).

NPPES Registry Identity

NPI1134419419
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDIEU-THI THI NGUYENCredential: M.D.
Location Address14139 POTOMAC MILLS RDWoodbridge, VA 22192-4644
Mailing Address14139 Potomac Mills RdWoodbridge, VA 22192-4644 · (703) 490-8400
Phone(703) 490-8400
Sole ProprietorNo
Medical School CMSGeisel School Of Medicine At DartmouthGraduated 2011
Enumeration DateApril 7, 2011
Last NPPES UpdateMay 27, 2021
NPPES CertifiedMay 27, 2021
✔ NPI 1134419419 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in VA · 0101256365
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
14139 POTOMAC MILLS RD, Woodbridge, VA 22192
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dieu-thi Thi Nguyen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092944835
PECOS Enrollment IDI20150210001832
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Dieu-thi Nguyen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc
1.5 mi
Health Maintenance Organization
13285 MINNIEVILLE ROAD
Woodbridge, VA 22192
  • Reassigned Medicare billing, Virginia and District of Columbia enrollments
  • Also billed through NPI 1215058326 (District of Columbia)
  • 995 clinicians in this Medicare group
NPI 1972275196 (301) 816-2424

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22192 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$129.04 typical visit price
range $56.19 – $170.30
Typical copayment $32.26 (range $14.04 – $42.57)
Most-billed visit code 99204
Established Patient
$99.13 typical visit price
range $18.07 – $138.91
Typical copayment $24.78 (range $4.51 – $34.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SOWJANYA BHAGAVATULA M.D
Internal Medicine
14139 POTOMAC MILLS RD
WOODBRIDGE, VA 22192
Prince William County (703) 490-8400
AZKA SOPHIE M.D.
Pediatrics
14139 POTOMAC MILLS RD
WOODBRIDGE, VA 22192
Prince William County (703) 490-8400
ELENA SHORT
Internal Medicine
14139 POTOMAC MILLS RD
WOODBRIDGE, VA 22192
Prince William County (703) 359-7878
DR. JOHN D LONG JR. MD
Obstetrics & Gynecology
14139 POTOMAC MILLS RD, KAISER PERMANENTE WOODBRIDGE MEDICAL CENTER
WOODBRIDGE, VA 22192
Prince William County (703) 490-8400
KRYSTEL NASR
Pharmacist (Ambulatory Care)
14139 POTOMAC MILLS RD
WOODBRIDGE, VA 22192
Prince William County (703) 490-8400
ERICA LARAE WYNN M.D.
Pediatrics
14139 POTOMAC MILLS RD
WOODBRIDGE, VA 22192
Prince William County (703) 490-7740
MARGARET S. JONES RD
Dietitian, Registered
14139 POTOMAC MILLS RD
WOODBRIDGE, VA 22192
Prince William County (703) 490-7797
DR. OBINNA EZEKWE PHARM.D
Pharmacist
14139 POTOMAC MILLS RD
WOODBRIDGE, VA 22192
Prince William County (703) 490-8400

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 Dieu-thi Nguyen's NPI number?

The NPI number for Dieu-thi Nguyen is 1134419419. It was assigned to this individual provider in the NPPES registry on April 7, 2011.

Where is Dieu-thi Nguyen located?

Dieu-thi Nguyen practices at 14139 Potomac Mills Rd, Woodbridge, VA 22192. The listed phone number is (703) 490-8400.

What is Dieu-thi Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Dieu-thi Nguyen enrolled in Medicare?

Yes. Dieu-thi Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Dieu-thi Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dieu-thi Nguyen reassigns Medicare benefits to Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Woodbridge, VA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Dieu-thi Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Dieu-thi Nguyen was last updated on May 27, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.