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ANNIE NGUYEN NP
NPI 1992580559
Nurse Practitioner in Rancho Cucamonga, CA

Active since August 30, 2023PECOS Enrolled
8330 RED OAK ST STE 101, RANCHO CUCAMONGA, CA 91730(909) 987-4922 Get Directions Write a Review

NPPES record last updated: August 30, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Annie Nguyen Np NPPES

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

ANNIE NGUYEN NP (NPI 1992580559) is an individual nurse practitioner in Rancho Cucamonga, California, licensed in California (95026339) and active in the NPI registry since August 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1992580559
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameANNIE NGUYENCredential: NP
Location Address8330 RED OAK ST STE 101Rancho Cucamonga, CA 91730-0603
Mailing Address840 Towne Center DrPomona, CA 91767-5900 · (909) 398-1562 · Fax (909) 445-8119
Phone(909) 987-4922
Sole ProprietorNo
Enumeration DateAugust 30, 2023
NPPES CertifiedAugust 29, 2023
✔ NPI 1992580559 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in CA · 95026339
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
8330 RED OAK ST STE 101, Rancho Cucamonga, CA 91730
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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 (PECOS)

Annie Nguyen Np 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 Billing Reassignment

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

Chaparral Medical Group, Inc.
Same address
Cardiovascular Disease
8330 RED OAK ST STE 101
Rancho Cucamonga, CA 91730
  • Reassigned Medicare billing, California enrollment
  • 99 clinicians in this Medicare group
NPI 1346639952 (909) 987-4922

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 91730 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
$91.88 typical visit price
range $59.60 – $179.42
Typical copayment $22.97 (range $14.90 – $44.85)
Most-billed visit code 99203
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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 3

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

CHAPARRAL MEDICAL GROUP, INC.
Internal Medicine (Cardiovascular Disease)
8330 RED OAK ST STE 101
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 987-4922
KIANA E RIVERA PA-C
Physician Assistant
8330 RED OAK ST STE 101
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 987-4922
HARITHA R ALLA M.D.
Internal Medicine (Cardiovascular Disease)
8330 RED OAK ST STE 101
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 987-4922

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 Annie Nguyen's NPI number?

The NPI number for Annie Nguyen is 1992580559. It was assigned to this individual provider in the NPPES registry on August 30, 2023.

Where is Annie Nguyen located?

Annie Nguyen practices at 8330 Red Oak St Ste 101, Rancho Cucamonga, CA 91730. The listed phone number is (909) 987-4922.

What is Annie Nguyen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Annie Nguyen enrolled in Medicare?

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

Which organization bills Medicare for Annie Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Annie Nguyen reassigns Medicare benefits to Chaparral Medical Group, Inc. (Rancho Cucamonga, CA). 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 Annie 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 Annie Nguyen was last updated on August 30, 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.