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THU NGOC NGUYEN MD
NPI 1114422888
Family Medicine in Aliso Viejo, CA

Active since March 26, 2018PECOS EnrolledAccepts Medicare Assignment
26671 ALISO CREEK RD STE 101, ALISO VIEJO, CA 92656(949) 791-3107(949) 791-3184 Get Directions Write a Review

NPPES record last updated: April 28, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 17, 2021, Dec 6, 2021, Mar 26, 2018 (3 updates tracked since 2018).

About Thu Ngoc Nguyen Md NPPES

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

THU NGOC NGUYEN MD (NPI 1114422888) is an individual family medicine provider in Aliso Viejo, California, licensed in California (A164654) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1114422888
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameTHU NGOC NGUYENCredential: MD
Location Address26671 ALISO CREEK RD STE 101Aliso Viejo, CA 92656-4807
Mailing Address26671 Aliso Creek Rd Ste 101Aliso Viejo, CA 92656-4807 · (949) 791-3107 · Fax (949) 791-3184
Phone(949) 791-3107
Fax(949) 791-3184
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateMarch 26, 2018
Last NPPES UpdateApril 28, 20233 updates tracked since enumeration
NPPES CertifiedApril 28, 2023
✔ NPI 1114422888 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A164654
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
26671 ALISO CREEK RD STE 101, Aliso Viejo, CA 92656
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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

Thu Ngoc Nguyen Md 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 ID6406274117
PECOS Enrollment IDI20200911002817
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 Reassignments

4

Medicare enrollment records show Thu Nguyen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hmts, Inc
6.5 mi
Urgent Care
16205 SAND CANYON AVE STE 100
Irvine, CA 92618
  • Reassigned Medicare billing, California enrollment
  • 89 clinicians in this Medicare group
NPI 1326828575 (949) 557-0000
Hoag Clinic
12 mi
Primary Care
510 SUPERIOR AVE
Newport Beach, CA 92663
  • Reassigned Medicare billing, California enrollment
  • 529 clinicians in this Medicare group
NPI 1942799523 (949) 791-3001
Memorialcare Medical Foundation
16 mi
Clinic/Center
17360 BROOKHURST ST
Fountain Valley, CA 92708
  • Reassigned Medicare billing, California enrollment
  • 948 clinicians in this Medicare group
NPI 1205167350 (877) 696-3622
Emergency Physicians Urgent Care Inc.
147 mi
Urgent Care
9710 BRIMHALL RD
Bakersfield, CA 93312
  • Reassigned Medicare billing, California enrollment
  • 225 clinicians in this Medicare group
NPI 1689963845 (661) 829-6747

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

Areas of Expertise CMS Part B claims 8

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.
245 services233 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.
238 services224 patients
Automated urinalysis test 81003
An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.
103 services98 patients
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen 87635
This is a lab test that detects the presence of COVID-19 in your body. It uses a technique to amplify the virus's genetic material, either DNA or RNA, making it easier to identify. A positive result indicates an active infection.
96 services95 patients
Detection test by immunoassay with direct visual observation for influenza virus 87804
This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.
58 services29 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
35 services35 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92656 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
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
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.

Other Providers at the Same Location NPPES 2

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

JEAN MICHELLE MENDIOLA MAYUGA FNP-C
Nurse Practitioner (Family)
26671 ALISO CREEK RD STE 101
ALISO VIEJO, CA 92656
Orange County (949) 763-7188
SHARON HOIER NP
Nurse Practitioner (Acute Care)
26671 ALISO CREEK RD STE 101
ALISO VIEJO, CA 92656
Orange County (949) 791-3107

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 Thu Nguyen's NPI number?

The NPI number for Thu Nguyen is 1114422888. It was assigned to this individual provider in the NPPES registry on March 26, 2018.

Where is Thu Nguyen located?

Thu Nguyen practices at 26671 Aliso Creek Rd Ste 101, Aliso Viejo, CA 92656. The listed phone number is (949) 791-3107.

What is Thu Nguyen's specialty?

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

Is Thu Nguyen enrolled in Medicare?

Yes. Thu 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 organizations bill Medicare for Thu Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thu Nguyen reassigns Medicare benefits to 4 organizations: Hmts, Inc (Irvine, CA), Hoag Clinic (Newport Beach, CA), Memorialcare Medical Foundation (Fountain Valley, CA) and Emergency Physicians Urgent Care Inc. (Bakersfield, CA). Each 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 Thu 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 Thu Nguyen was last updated on April 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.