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DR. HANH THE-TRINH NGUYEN M.D.
NPI 1558516476
Family Medicine in Santa Ana, CA

Active since November 19, 2008PECOS Enrolled
800 N MAIN ST, SANTA ANA, CA 92701(714) 456-7002 Get Directions Write a Review

NPPES record last updated: November 19, 2008. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Dr. Hanh The-trinh Nguyen M.d. NPPES

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

DR. HANH THE-TRINH NGUYEN M.D. (NPI 1558516476) is an individual family medicine provider in Santa Ana, California, licensed in California (A106080) and active in the NPI registry since November 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1558516476
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. HANH THE-TRINH NGUYENCredential: M.D.
Location Address800 N MAIN STSanta Ana, CA 92701-3576
Mailing Address800 N Main StSanta Ana, CA 92701-3576
Phone(714) 456-7002
Sole ProprietorNo
Enumeration DateNovember 19, 2008
✔ NPI 1558516476 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · A106080
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.
800 N MAIN ST, Santa Ana, CA 92701
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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)

Dr. Hanh The-trinh 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 Billing Reassignments

2

Medicare enrollment records show Hanh Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of California Irvine
Same address
Federally Qualified Health Center (FQHC)
800 N MAIN ST
Santa Ana, CA 92701
  • Reassigned Medicare billing, California enrollment
  • 255 clinicians in this Medicare group
NPI 1851325906 (714) 456-6785
Regents Of The University Of
2.8 mi
Family Medicine
101 THE CITY DR S
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 114 clinicians in this Medicare group
NPI 1366590762 (714) 456-8068

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 92701 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 20

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

REGENTS OF THE UNIVERSITY OF CALIFORNIA
Family Medicine
800 N MAIN ST
SANTA ANA, CA 92701
Orange County (714) 456-8068
EMILY GARCIA
Family Medicine
800 N MAIN ST
SANTA ANA, CA 92701
Orange County (657) 282-6355
UNIVERSITY OF CALIFORNIA IRVINE
Pharmacy (Clinic Pharmacy)
800 N MAIN ST
SANTA ANA, CA 92701
Orange County (714) 456-6785
KAREN BUI MD
Student in an Organized Health Care Education/Training Program
800 N MAIN ST
SANTA ANA, CA 92701
Orange County (657) 282-6355
QUANG ANH LA PHAM
Student in an Organized Health Care Education/Training Program
800 N MAIN ST
SANTA ANA, CA 92701
Orange County (714) 480-2440
SUZANNE NGUYEN MD
Family Medicine
800 N MAIN ST
SANTA ANA, CA 92701
Orange County (714) 456-7002
DR. LYNETTE BUI ANDERSON DO
Family Medicine
800 N MAIN ST
SANTA ANA, CA 92701
Orange County (657) 282-6355
DR. HEMESH MAHESH PATEL D.O.
Family Medicine
800 N MAIN ST
SANTA ANA, CA 92701
Orange County (714) 456-7002

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 Hanh Nguyen's NPI number?

The NPI number for Hanh Nguyen is 1558516476. It was assigned to this individual provider in the NPPES registry on November 19, 2008.

Where is Hanh Nguyen located?

Hanh Nguyen practices at 800 N Main St, Santa Ana, CA 92701. The listed phone number is (714) 456-7002.

What is Hanh Nguyen's specialty?

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

Is Hanh Nguyen enrolled in Medicare?

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

Which organizations bill Medicare for Hanh Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hanh Nguyen reassigns Medicare benefits to 2 organizations: University Of California Irvine (Santa Ana, CA) and Regents Of The University Of (Orange, 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 Hanh 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 Hanh Nguyen was last updated on November 19, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.