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SON X NGUYEN M.D.
NPI 1326206848
Surgery in Torrance, CA

Active since May 30, 2008PECOS Enrolled
23451 MADISON ST, SUITE 340, TORRANCE, CA 90505(310) 373-6864(310) 373-9547 Get Directions Write a Review

NPPES record last updated: July 2, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Son X Nguyen M.d. NPPES

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

SON X NGUYEN M.D. (NPI 1326206848) is an individual surgery provider in Torrance, California, licensed in Pennsylvania (MD431836) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1326206848
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameSON X NGUYENCredential: M.D.
Location Address23451 MADISON ST, SUITE 340Torrance, CA 90505-4763
Mailing Address23451 Madison St, Suite 340Torrance, CA 90505-4763 · (310) 373-6864 · Fax (310) 373-9547
Phone(310) 373-6864
Fax(310) 373-9547
Sole ProprietorNo
Enumeration DateMay 30, 2008
Last NPPES UpdateJuly 2, 2013
✔ NPI 1326206848 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in PA · MD431836
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
23451 MADISON ST, Torrance, CA 90505
Open in Google Maps ↗

Other Identifiers 1

OtherMD431836PA · Pennsylvania State License

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Son X 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 Reassignment

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

Association Of South Bay Surgeons
Same address
Surgery
23451 MADISON ST, SUITE 340
Torrance, CA 90505
  • Reassigned Medicare billing, California enrollment
  • 21 clinicians in this Medicare group
NPI 1952492860 (310) 373-6864

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 90505 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
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
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.

BLISS MEDICAL GROUP, P.C.
Family Medicine
23451 MADISON ST, SUITE 250
TORRANCE, CA 90505
Los Angeles County (310) 791-0083
TORRANCE NEUROSCAN MEDICAL GROUP
Psychiatry & Neurology (Neurology)
23451 MADISON ST, 205
TORRANCE, CA 90505
Los Angeles County (310) 373-9944
CARDIAC, THORACIC, AND VASCULAR SURGEONS OF THE SOUTH BAY
Thoracic Surgery (Cardiothoracic Vascular Surgery)
23451 MADISON ST, SUITE 300
TORRANCE, CA 90505
Los Angeles County (310) 378-7373
DR. CARL WAGREICH D.P.M.
Podiatrist (Foot & Ankle Surgery)
23451 MADISON ST, STE 230
TORRANCE, CA 90505
Los Angeles County (310) 373-0521
KATHERINE EUNJU LEE M.D., F.A.A.F.P
Family Medicine
23451 MADISON ST, STE 250
TORRANCE, CA 90505
Los Angeles County (310) 791-0083
JANELLE ROBLES MACASIEB PA-C
Physician Assistant
23451 MADISON ST, SUITE 290
TORRANCE, CA 90505
Los Angeles County (310) 375-1246
AMIR KAVIANI M.D.
Surgery (Vascular Surgery)
23451 MADISON ST, SUITE #340
TORRANCE, CA 90505
Los Angeles County (310) 373-6864
JASON PHAN DDS INC.
Dentist (Endodontics)
23451 MADISON ST, STE 210
TORRANCE, CA 90505
Los Angeles County (310) 378-8342

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 Son Nguyen's NPI number?

The NPI number for Son Nguyen is 1326206848. It was assigned to this individual provider in the NPPES registry on May 30, 2008.

Where is Son Nguyen located?

Son Nguyen practices at 23451 Madison St Suite 340, Torrance, CA 90505. The listed phone number is (310) 373-6864.

What is Son Nguyen's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Son Nguyen enrolled in Medicare?

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

Which organization bills Medicare for Son Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Son Nguyen reassigns Medicare benefits to Association Of South Bay Surgeons (Torrance, 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 Son 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 Son Nguyen was last updated on July 2, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.