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THUY NGUYEN M.D.
NPI 1043673916
Psychiatry & Neurology - Epilepsy in Washington, DC

Active since March 30, 2016PECOS Enrolled
76.55/100
CMS Quality Rating
4200 WISCONSIN AVE NW STE 4, WASHINGTON, DC 20016(202) 243-3400(202) 243-3434 Get Directions Write a Review

NPPES record last updated: March 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Mar 13, 2026, Oct 17, 2022, Mar 30, 2016 (3 updates tracked since 2016).

About Thuy Nguyen M.d. NPPES

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

THUY NGUYEN M.D. (NPI 1043673916) is an individual epilepsy provider in Washington, District Of Columbia, licensed in District Of Columbia (MD2000049) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS and maintains a secondary practice location in Palo Alto.

NPPES Registry Identity

NPI1043673916
Entity TypeIndividualFemale
Primary Taxonomy2084E0001X
Provider Legal NameTHUY NGUYENCredential: M.D.
Location Address4200 WISCONSIN AVE NW STE 4Washington, DC 20016-2143
Mailing Address4200 Wisconsin Ave Nw Ste 4Washington, DC 20016-2143 · (202) 243-3400 · Fax (202) 243-3434
Phone(202) 243-3400
Fax(202) 243-3434
Sole ProprietorNo
Enumeration DateMarch 30, 2016
Last NPPES UpdateMarch 13, 20263 updates tracked since enumeration
NPPES CertifiedMarch 13, 2026
✔ NPI 1043673916 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · EpilepsyAllopathic & Osteopathic Physicians
Taxonomy Code2084E0001X
License✔ Licensed in DC · MD2000049
Definition
Epilepsy is a subspecialty of neurology focused on the diagnosis and treatment of patients with epilepsy, including new-onset, medically refractory epilepsy, psychogenic nonepileptic seizures, and epilepsy in special populations (the elderly, women, patients with co-morbidities). Epilepsy is a multidisciplinary field that provides comprehensive care of the patient.
Also ListedPediatricsTaxonomy 208000000X · License MD2000049 (DC)
4200 WISCONSIN AVE NW STE 4, Washington, DC 20016
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Secondary Practice Location 1

Location 1725 Welch RdPalo Alto, CA 94304-1601 · Phone (650) 497-8000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thuy Nguyen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.55/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality63.16
Promoting Interoperability100
Improvement Activities40
Cost55.94

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.

TIFFANI ERICKSON MD
Obstetrics & Gynecology
4200 WISCONSIN AVE NW STE 4
WASHINGTON, DC 20016
District of Columbia (202) 295-0544
JESSICA FORMAN
Student in an Organized Health Care Education/Training Program
4200 WISCONSIN AVE NW STE 4
WASHINGTON, DC 20016
District of Columbia (202) 243-3400
DR. CHARALAMPOS MYSTAKELIS MD
Pediatrics
4200 WISCONSIN AVE NW STE 4
WASHINGTON, DC 20016
District of Columbia (202) 243-3400
CLEOPHINA C RAYMOND MD
Student in an Organized Health Care Education/Training Program
4200 WISCONSIN AVE NW STE 4
WASHINGTON, DC 20016
District of Columbia (202) 243-3400
AMY BRENNER CORSO NP
Nurse Practitioner (Pediatrics)
4200 WISCONSIN AVE NW STE 4
WASHINGTON, DC 20016
District of Columbia (202) 243-3400
GARGI SURESH KAKANI MBBS, MPH
Pediatrics
4200 WISCONSIN AVE NW STE 4
WASHINGTON, DC 20016
District of Columbia (202) 243-3400
KARLEIGH MARIE MEZEIVTCH
Pediatrics
4200 WISCONSIN AVE NW STE 4
WASHINGTON, DC 20016
District of Columbia (202) 243-3400
DR. SARAH R MAGAZINER MD
Pediatrics
4200 WISCONSIN AVE NW STE 4
WASHINGTON, DC 20016
District of Columbia (202) 243-3400

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 Thuy Nguyen's NPI number?

The NPI number for Thuy Nguyen is 1043673916. It was assigned to this individual provider in the NPPES registry on March 30, 2016.

Where is Thuy Nguyen located?

Thuy Nguyen practices at 4200 Wisconsin Ave NW Ste 4, Washington, DC 20016. The listed phone number is (202) 243-3400.

What is Thuy Nguyen's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Epilepsy, with taxonomy code 2084E0001X.

Is Thuy Nguyen enrolled in Medicare?

Yes. Thuy Nguyen is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Thuy Nguyen was last updated on March 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.