Dr. Yesim Yilmaz Demirdag, UCI Health allergist and immunologist

Yesim Yilmaz Demirdag, MD


Allergy & Immunology

Clinical Interests

immunodeficiency diseases, asthma, eczema, drug allergies, eosinophilic esophagitis, food allergies, hives, insect stings, rhinitis, sinusitis

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  • American Board of Allergy and Immunology, Allergy and Immunology
  • English
  • Turkish
Medical School
Akdeniz University Medical School
Hacettepe UniversityPediatrics
Louisiana State University Health Science CenterPediatrics
Louisiana State University Health Science CenterAllergy and Immunology
Yale Univ. Medical Ctr.Clinical Cytogenetics
Professional Positions
  • Associate Professor — Division of Basic & Clinical Immunology, Department of Medicine, UCI School of Medicine
  • Director — Allergy and Immunology Fellowship program
More Information

Dr. Yesim Yilmaz Demirdag is a board-certified UCI Health allergist and immunologist who specializes in the diagnosis and treatment of immunodeficiencies in children and adults, as well as asthma, food allergies and eczema in children.

Her clinical interests include urticaria (hives), angioedema (swelling), rhinitis, sinusitis, drug allergies, eosinophilic esophagitis and stinging insect allergies.

Yilmaz Demirdag earned her medical degree at Akdeniz University School of Medicine in Antalya, Turkey. She completed residencies in pediatrics at Hacettepe University in Ankara, Turkey, and Louisiana State University Health Sciences Center in Shreveport, where she completed a fellowship in allergy and immunology. She also received fellowship training in clinical cytogenics at the Yale School of Medicine in New Haven, Conn.

Her research interests include the genetics of primary immune deficiencies, immune deficiencies in chromosomal abnormalities, eczema and food allergies. Before joining UCI Health, she set up and directed the first pediatric and adult primary immune deficiency clinic at Columbia University Irving Medical Center in New York City. 

Yilmaz Demirdag, who also speaks Turkish, has devoted herself to providing the best, evidence-based medical care to her patients.

She sees patients in Irvine and Orange.

UCI Health Gottschalk Medical Plaza
1 Medical Plaza Drive
Irvine, CA 92697
Phone: 949-824-8600
Pavilion 1
UCI Medical Center
101 The City Drive South, Building 30
Orange, CA 92868
Phone: 714-456-7720