Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Ahdad Ziyar

Individual provider Allergy & Immunology (Internal Medicine) Physician · NPI 1205330685

Ahdad Ziyar is an Allergy/Immunology in Santa Ana, California. Graduated from University of Florida College of Medicine in 2018, 8 years ago. Licensed in California.

Years since qualifying
8
Trained at
University of Florida College of Medicine
Licensed in
CA
In the registry since
2018
Specialties on file
2

Practice location Address checks out

801 N Tustin Ave Ste 605
Santa Ana, CA 92705-3610
Phone: (714) 584-9930
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence A164647 (CA)
Allergy & Immunology (Internal Medicine) Physician Taxonomy 207RA0201X · Licence A164647 (CA)

Record details

NPI number1205330685
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 21, 2018
Last updated in NPPESDecember 30, 2025
Certification dateDecember 30, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF FLORIDA COLLEGE OF MEDICINE
Graduated 2018 (8 years in practice)
Accepts Medicare assignment Not indicated