DR. ALEXANDER PHONG NGUYEN MD
NPI 1881868396
Radiology - Diagnostic Radiology in Menlo Park, CA
About Dr. Alexander Phong Nguyen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALEXANDER PHONG NGUYEN MD (NPI 1881868396) is an individual diagnostic radiology provider in Menlo Park, California, licensed in California (A104306) and active in the NPI registry since April 2008. He is enrolled in Medicare PECOS and is a graduate of University Of New Mexico School Of Medicine (2002).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Dr. Alexander Phong 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.
Medicare Billing Reassignments
3Medicare enrollment records show Alexander Nguyen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fairfield, CA 94534
- Reassigned Medicare billing, California enrollment
- 3,056 clinicians in this Medicare group
Pasadena, CA 91105
- Reassigned Medicare billing, California enrollment
- 71 clinicians in this Medicare group
Los Angeles, CA 90033
- Reassigned Medicare billing, California enrollment
- 2,445 clinicians in this Medicare group
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 94025 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
MENLO PARK, CA 94025
MENLO PARK, CA 94025
MENLO PARK, CA 94025
MENLO PARK, CA 94025
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 Alexander Nguyen's NPI number?
The NPI number for Alexander Nguyen is 1881868396. It was assigned to this individual provider in the NPPES registry on April 15, 2008.
Where is Alexander Nguyen located?
Alexander Nguyen practices at 795 Willow Rd, Menlo Park, CA 94025. The listed phone number is (650) 614-9937.
What is Alexander Nguyen's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Alexander Nguyen enrolled in Medicare?
Yes. Alexander 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 Alexander Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Nguyen reassigns Medicare benefits to 3 organizations: Sutter Valley Medical Foundation (Fairfield, CA), Keck Medicine Of Usc Imaging Centers, LLC (Pasadena, CA) and Usc Care Medical Group, Inc (Los Angeles, 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 Alexander Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alexander Nguyen accept?
Health plans from Blue Cross Blue Shield of Wyoming and Blue Cross and Blue Shield of Texas list Alexander Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Alexander Nguyen was last updated on July 18, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Dr. Alexander Phong Nguyen, MD · NPI 1881868396
Diagnostic Radiology physician in Menlo Park, California. Individual provider, active in the CMS NPPES registry since April 15, 2008.
## Identity
- **NPI:** 1881868396 (Entity type: Individual)
- **Enumerated:** April 15, 2008
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** A104306 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 795 WILLOW RD, Menlo Park, CA 94025-2539
- **Phone:** (650) 614-9937
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Sutter Valley Medical Foundation (NPI 1184859894, Fairfield, CA); Keck Medicine Of Usc Imaging Centers, LLC (NPI 1669292405, Pasadena, CA); Usc Care Medical Group, Inc (NPI 1902846306, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of New Mexico School Of Medicine, class of 2002
## Record status
- **NPPES last updated:** July 18, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1881868396) · Data from the CMS NPPES public registry.