HUU NGUYEN, M.D., INC
NPI 1336110352
Internal Medicine in Santa Ana, CA

Q: What is Nguyen Huu, M.D., Inc's NPI number?

The NPI number for Nguyen Huu, M.D., Inc is 1336110352. It was assigned to this organization in the NPPES registry on January 28, 2006. The provider is also known as Huu Nguyen, M.D., Inc.

Q: What is Nguyen Huu, M.D., Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Active since January 28, 2006CLIA 05D0704226 · Waiver

1220 HEMLOCK WAY, SUITE 102, SANTA ANA, CA 92707(714) 957-0040(714) 957-0768 Get Directions Write a Review

NPPES record last updated: July 26, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Huu Nguyen, M.d., Inc NPPES

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

HUU NGUYEN, M.D., INC (NPI 1336110352) is a healthcare organization registered as an internal medicine in Santa Ana, California and active in the NPI registry since January 2006. The organization holds a CLIA Waiver certificate valid through August 28, 2027 and lists Huu Nguyen, President, as its authorized official.

NPPES Registry Identity

NPI1336110352

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameNGUYEN HUU, M.D., INC

Location Address1220 HEMLOCK WAY, SUITE 102Santa Ana, CA 92707-3650

Mailing Address1220 Hemlock Way, Suite 102Santa Ana, CA 92707-3650 · (714) 957-0040 · Fax (714) 957-0768

Phone(714) 957-0040

Fax(714) 957-0768

Organization SubpartNo

Authorized OfficialHuu NguyenPresident · (714) 957-0040

Enumeration DateJanuary 28, 2006

Last NPPES UpdateJuly 26, 2007

✔ NPI 1336110352 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A32220

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedFamily MedicineTaxonomy 207Q00000X · License A32220 (CA)

1220 HEMLOCK WAY, Santa Ana, CA 92707

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Other Names 1

Other NameHuu Nguyen, M.d., Inc

Other Identifiers 3

Medicare UPINA84327CA

Medicaid00A322200CA

Medicare ID-Type UnspecifiedA32220

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 MULTIPLE 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)

Huu Nguyen, M.d., Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Huu Nguyen, M.D., Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Huu Nguyen, M.D.

Internal Medicine

NPI 1396922068

1220 HEMLOCK WAY SUITE 102
Santa Ana, CA 92707

(714) 957-0040

✔ PECOS✔ Accepts MedicareSame address

Thai Do, M.D.

Internal Medicine

NPI 1619176559

7977 ANZA VISTA CT
Corona, CA 92880

(951) 737-2683

✔ PECOS23 mi

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 05D0704226

Nguyen Huu MD Inc · Santa Ana, CA

Active · expires Aug 28, 2027

CLIA Number05D0704226

Laboratory TypePhysician Office

Certificate Effective DateAugust 29, 2025

Certificate Expiration DateAugust 28, 2027

Laboratory DirectorNguyen Huu

Laboratory Phone(714) 957-0040

Laboratory LocationNguyen Huu MD Inc1220 Hemlock Way 102, Santa Ana, CA 92707

CLIA data matches this NPI record on: Address 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 Nguyen Huu, M.D., Inc's NPI number?

The NPI number for Nguyen Huu, M.D., Inc is 1336110352. It was assigned to this organization in the NPPES registry on January 28, 2006. The provider is also known as Huu Nguyen, M.D., Inc.

Where is Nguyen Huu, M.D., Inc located?

Nguyen Huu, M.D., Inc is located at 1220 Hemlock Way Suite 102, Santa Ana, CA 92707. The listed phone number is (714) 957-0040.

What is Nguyen Huu, M.D., Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Nguyen Huu, M.D., Inc enrolled in Medicare?

Yes. Nguyen Huu, M.D., Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Nguyen Huu, M.D., Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Internal Medicine, reassign their Medicare billing to Nguyen Huu, M.D., 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, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Nguyen Huu, M.D., Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0704226) is associated with this NPI, valid through August 28, 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 Nguyen Huu, M.D., Inc was last updated on July 26, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.