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AHDAD ZIYAR, M.D., INC.
NPI 1124726989
Internal Medicine - Allergy & Immunology in Santa Ana, CA

Active since February 21, 2023
801 N TUSTIN AVE STE 605, SANTA ANA, CA 92705(714) 584-9930 Get Directions Write a Review

NPPES record last updated: November 28, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 28, 2025, Apr 13, 2025, Apr 3, 2023 and 2 more (5 updates tracked since 2023).

About Ahdad Ziyar, M.d., Inc. NPPES

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

AHDAD ZIYAR, M.D., INC. (NPI 1124726989) is a healthcare organization registered as an allergy & immunology in Santa Ana, California and active in the NPI registry since February 2023. The organization lists Ahdad Ziyar, Physician, as its authorized official.

NPPES Registry Identity

NPI1124726989
Entity TypeOrganization
Primary Taxonomy207RA0201X
Legal Business NameAHDAD ZIYAR, M.D., INC.
Location Address801 N TUSTIN AVE STE 605Santa Ana, CA 92705-3610
Mailing Address7335 N 1st St Ste 102Fresno, CA 93720-2968 · (559) 449-1209
Phone(714) 584-9930
Organization SubpartNo
Authorized OfficialAhdad ZiyarPhysician · (213) 282-7603
Enumeration DateFebruary 21, 2023
Last NPPES UpdateNovember 28, 20255 updates tracked since enumeration
NPPES CertifiedNovember 28, 2025
✔ NPI 1124726989 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Allergy & ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code207RA0201X
Definition
An internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Special Qualifications in the field of Allergy & Immunology.
Also ListedInternal MedicineTaxonomy 207R00000X
801 N TUSTIN AVE STE 605, Santa Ana, CA 92705
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES

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

AHDAD ZIYAR
Allergy & Immunology
801 N TUSTIN AVE STE 605
SANTA ANA, CA 92705
Orange County (714) 584-9930

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 Ahdad Ziyar, M.D., Inc.'s NPI number?

The NPI number for Ahdad Ziyar, M.D., Inc. is 1124726989. It was assigned to this organization in the NPPES registry on February 21, 2023.

Where is Ahdad Ziyar, M.D., Inc. located?

Ahdad Ziyar, M.D., Inc. is located at 801 N Tustin Ave Ste 605, Santa Ana, CA 92705. The listed phone number is (714) 584-9930.

What is Ahdad Ziyar, M.D., Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Allergy & Immunology, with taxonomy code 207RA0201X.

When was this NPI record last updated?

The NPPES record for Ahdad Ziyar, M.D., Inc. was last updated on November 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.