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BRIAN L NGUYEN MD, INC
NPI 1346305166
Internal Medicine - Cardiovascular Disease in Sun City, CA

Active since December 22, 2006CLIA 05D0984303 · Waiver
29798 HAUN ROAD, SUITE 108, SUN CITY, CA 92586(951) 301-9339(951) 301-3980 Get Directions Write a Review

NPPES record last updated: April 20, 2012. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Brian L Nguyen Md, Inc NPPES

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

BRIAN L NGUYEN MD, INC (NPI 1346305166) is a healthcare organization registered as a cardiovascular disease in Sun City, California and active in the NPI registry since December 2006. The organization holds a CLIA Waiver certificate valid through March 18, 2027 and lists Brian L Nguyen, Md/owner, as its authorized official.

NPPES Registry Identity

NPI1346305166
Entity TypeOrganization
Primary Taxonomy207RC0000X
Legal Business NameBRIAN L NGUYEN MD, INC
Location Address29798 HAUN ROAD, SUITE 108Sun City, CA 92586-6541
Mailing AddressPo Box 991Sun City, CA 92586-0991 · (951) 301-9339 · Fax (951) 301-3980
Phone(951) 301-9339
Fax(951) 301-3980
Organization SubpartNo
Authorized OfficialBrian L NguyenMd/owner · (951) 301-9339
Enumeration DateDecember 22, 2006
Last NPPES UpdateApril 20, 2012
✔ NPI 1346305166 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in CA · A53427
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
29798 HAUN ROAD, Sun City, CA 92586
Open in Google Maps ↗

Other Identifiers 12

Medicare UPING64785CA
Medicaid00A534270CA
Medicare PIN00A534271CA
Medicare ID-Type Unspecified00A534270CA · 44274 George Cushman Teme
Other00A534270CA · 31565 Rancho Pueble Ste 102 Temecula, Ca 92592 Medicare Nhic
OtherDN6409CA · Railroad Medicare
Medicare ID-Type Unspecified00A534270CA · Nhic Medicare Number
MedicaidG64785CA
Other110219240Railroad Medicare
Medicaid00A534271CA
Medicare PINZZZ06360ZCA
Other00A534271CA · Medicare Nhic 31565 Rancho Pueblo Ste 102 Temecula Ca 92592

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Brian L Nguyen Md, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Brian L Nguyen MD, Inc, which bills Medicare for the services they deliver. Of these, 3 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Christine Nguyen, M.D.
Internal Medicine
NPI 1114947405
29798 HAUN RD STE 104
Menifee, CA 92586
(951) 301-9339
✔ PECOS✔ Accepts MedicareSame address
Brian-Linh Nguyen, M.D.
Internal Medicine
NPI 1851314512
29798 HAUN RD SUITE 108
Sun City, CA 92586
(951) 301-9339
✔ PECOS✔ Accepts MedicareSame address
Laura Holzer, M.D.
Internal Medicine
NPI 1972862092
29798 HAUN RD STE 108
Menifee, CA 92586
(714) 202-2330
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0984303

Brian L Nguyen MD Inc · Sun City, CA
Active · expires Mar 18, 2027
CLIA Number05D0984303
Laboratory TypePhysician Office
Certificate Effective DateMarch 19, 2025
Certificate Expiration DateMarch 18, 2027
Laboratory DirectorBrian L. Nguyen MD
Laboratory Phone(951) 301-9339
Laboratory LocationBrian L Nguyen MD Inc29798 Haun Road #108, Sun City, CA 92586
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 Brian L Nguyen MD, Inc's NPI number?

The NPI number for Brian L Nguyen MD, Inc is 1346305166. It was assigned to this organization in the NPPES registry on December 22, 2006.

Where is Brian L Nguyen MD, Inc located?

Brian L Nguyen MD, Inc is located at 29798 Haun Road Suite 108, Sun City, CA 92586. The listed phone number is (951) 301-9339.

What is Brian L Nguyen MD, Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Brian L Nguyen MD, Inc enrolled in Medicare?

Yes. Brian L Nguyen MD, Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Brian L Nguyen MD, Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians, all in Internal Medicine, reassign their Medicare billing to Brian L Nguyen MD, Inc. A 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 the clinician's services. Of these, 3 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Brian L Nguyen MD, Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0984303) is associated with this NPI, valid through March 18, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Brian L Nguyen MD, Inc was last updated on April 20, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.