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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. HIEN NGOC NGUYEN MD
NPI 1871556969
Specialist in Milpitas, CA

Active since April 10, 2006PECOS Enrolled
429 S MAIN ST, MILPITAS, CA 95035(408) 719-1975(408) 719-1979 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Mr. Hien Ngoc Nguyen Md NPPES

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

MR. HIEN NGOC NGUYEN MD (NPI 1871556969) is an individual specialist in Milpitas, California, licensed in California (A55436) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1871556969
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameMR. HIEN NGOC NGUYENCredential: MD
Location Address429 S MAIN STMilpitas, CA 95035-5318
Mailing Address429 S Main StMilpitas, CA 95035-5318 · (408) 719-1975 · Fax (408) 719-1979
Phone(408) 719-1975
Fax(408) 719-1979
Sole ProprietorNo
Enumeration DateApril 10, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1871556969 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · A55436
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
429 S MAIN ST, Milpitas, CA 95035
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. Hien Ngoc Nguyen Md 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.

Other Providers at the Same Location NPPES

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

NICOLE THANH - CAM VECCHI M.D.
Specialist
429 S MAIN ST
MILPITAS, CA 95035
Santa Clara County (408) 935-9586

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 Hien Nguyen's NPI number?

The NPI number for Hien Nguyen is 1871556969. It was assigned to this individual provider in the NPPES registry on April 10, 2006.

Where is Hien Nguyen located?

Hien Nguyen practices at 429 S Main St, Milpitas, CA 95035. The listed phone number is (408) 719-1975.

What is Hien Nguyen's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Hien Nguyen enrolled in Medicare?

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

When was this NPI record last updated?

The NPPES record for Hien Nguyen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 44 days 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.