What is Joseph Nguyen's NPI number?

Joseph Nguyen's National Provider Identifier (NPI) is 1225217425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Joseph Nguyen's specialty?

Joseph Nguyen is listed in the NPPES registry with a primary specialty of Allergy & Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).

Where is Joseph Nguyen located?

Joseph Nguyen's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.

What is Joseph Nguyen's phone number?

The practice phone number listed in the NPPES registry for Joseph Nguyen is (714) 456-5691.

Is Joseph Nguyen's NPI active?

Yes — Joseph Nguyen's NPI (1225217425) is active in the NPPES registry as of the last update on 2021-04-06.

IndividualActive

Joseph Nguyen, MD

NPI 1225217425 · Allergy & Immunology (Internal Medicine) Physician · Orange, CA

Joseph Nguyen, MD is a Allergy & Immunology (Internal Medicine) Physician provider in Orange, CA (NPI 1225217425).

Provider details

NPI number: 1225217425
Entity type: Individual
Primary specialty: Allergy & Immunology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: A92171 (CA)

Specialties & taxonomies

Allergy & Immunology (Internal Medicine) PhysicianPrimary207RA0201XLicense A91271 (CA)
Allopathic & Osteopathic Physicians
Allergy & Immunology Physician207K00000XLicense A92171 (CA)
Allopathic & Osteopathic Physicians
Internal Medicine Physician207R00000XLicense A91271 (CA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(97/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
18 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
3 documented practice locations

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

101 the City Dr S

Orange, CA 92868-3201

Phone: (714) 456-5691

Street-level locationGet directions

More CA providers

Mailing address

1714 N Bush St

Santa Ana, CA 92706-2812

Additional practice locations (2)

4332 Katella Ave
Los Alamitos, CA 90720-3564
Phone: (562) 369-4325
10300 Compton Ave
Los Angeles, CA 90002-3628
Phone: (323) 564-4331

Enumerated: 2007-10-24
Last updated: 2021-04-06
Certified: 2021-04-06

Frequently asked questions

What is Joseph Nguyen's NPI number?: Joseph Nguyen's National Provider Identifier (NPI) is 1225217425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Joseph Nguyen's specialty?: Joseph Nguyen is listed in the NPPES registry with a primary specialty of Allergy & Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
Where is Joseph Nguyen located?: Joseph Nguyen's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
What is Joseph Nguyen's phone number?: The practice phone number listed in the NPPES registry for Joseph Nguyen is (714) 456-5691.
Is Joseph Nguyen's NPI active?: Yes — Joseph Nguyen's NPI (1225217425) is active in the NPPES registry as of the last update on 2021-04-06.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.