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DR. THUY THANH NGUYEN M.D.
NPI 1811077787
Internal Medicine in Westminster, CA

Active since October 16, 2006PECOS EnrolledAccepts Medicare Assignment
9550 BOLSA AVE. SUITE 101, WESTMINSTER, CA 92683(714) 775-1628(714) 775-5218 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Thuy Thanh Nguyen M.d. NPPES

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

DR. THUY THANH NGUYEN M.D. (NPI 1811077787) is an individual internal medicine provider in Westminster, California, licensed in California (A62612) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (1995).

NPPES Registry Identity

NPI1811077787
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. THUY THANH NGUYENCredential: M.D.
Location Address9550 BOLSA AVE. SUITE 101Westminster, CA 92683
Mailing Address9550 Bolsa Ave. Suite 101Westminster, CA 92683 · (714) 775-1628 · Fax (714) 775-5218
Phone(714) 775-1628
Fax(714) 775-5218
Sole ProprietorYes
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 1995
Enumeration DateOctober 16, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1811077787 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A62612
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.
Also ListedPediatricsTaxonomy 208000000X · License A62612 (CA)

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Thuy Thanh 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 ID1658563358
PECOS Enrollment IDI20101013001004
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.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
361 services74 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
107 services53 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92683 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
3 suppliers20 claims38 services$5.20 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
4 suppliers21 claims21 services$0.91 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 1811077787. It was assigned to this individual provider in the NPPES registry on October 16, 2006.

Where is Thuy Nguyen located?

Thuy Nguyen practices at 9550 Bolsa Ave. Suite 101, Westminster, CA 92683. The listed phone number is (714) 775-1628.

What is Thuy Nguyen's specialty?

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

Is Thuy Nguyen enrolled in Medicare?

Yes. Thuy 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.

When was this NPI record last updated?

The NPPES record for Thuy Nguyen was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.