MediFind found 109 doctor with experience in Primary Immunodeficiency (PID) near Orange, CA. Of these, 93 are Experienced, 14 are Advanced, 1 are Distinguished and 1 are Elite.
Sudhir Gupta is an Allergy and Immunologist and an Adolescent Medicine provider in Orange, California. Dr. Gupta is rated as an Elite provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Primary Immunodeficiency (PID), Common Variable Immune Deficiency, X-Linked Agammaglobulinemia, and Immunodeficiency with Hyper IgM Type 1.
Uc Regents
Misagh Karimi is a Hematologist Oncology specialist and a Hematologist in Orange, California. Dr. Karimi is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Breast Cancer, Familial Colorectal Cancer, Colorectal Cancer, and Paget Disease of the Breast.
Uc Regents
Ankmalika Gupta is an Allergy and Immunologist in Orange, California. Dr. Gupta is rated as a Distinguished provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Primary Immunodeficiency (PID), Common Variable Immune Deficiency, X-Linked Agammaglobulinemia, and Immunodeficiency with Hyper IgM Type 1.
City Of Hope Medical Foundation
Sudarsan Kollimuttathuillam is a Hematologist Oncology specialist and a Hematologist in Irvine, California. Dr. Kollimuttathuillam is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Iron Deficiency Anemia, Childhood Iron Deficiency Anemia, Dehydration, and Agranulocytosis.
City Of Hope Medical Foundation
Luke Chen is a Hematologist Oncology specialist and a Hematologist in Irvine, California. Dr. Chen is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Clear Cell Sarcoma, Renal Cell Carcinoma (RCC), Chromophobe Renal Cell Carcinoma, WT1-Related Wilms Tumor Syndromes, and Prostatectomy.
City Of Hope Medical Foundation
Danny Nguyen is a Hematologist Oncology specialist and a Hematologist in Irvine, California. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Pleuropulmonary Blastoma, Lynch Syndrome, Colorectal Cancer, and Familial Colorectal Cancer.
William Harris is an Allergy and Immunologist in Orange, California. Dr. Harris is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Hives, Sinusitis, Grass Allergy, and Allergic Rhinitis.
Chao-i Lin is an Allergy and Immunologist in Orange, California. Dr. Lin is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Hives, Allergic Rhinitis, Sinusitis, and Grass Allergy. Dr. Lin is currently accepting new patients.
Ata Rahbar is a primary care provider, practicing in Internal Medicine in Orange, California. Dr. Rahbar is rated as an Advanced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Apparent Mineralocorticoid Excess, Hyperaldosteronism, Familial Hyperaldosteronism, Gastrostomy, and Bone Marrow Aspiration. Dr. Rahbar is currently accepting new patients.
Uc Regents
Yesim Yilmaz-Demirdag is an Allergy and Immunologist and a Pediatrics provider in Orange, California. Dr. Yilmaz-Demirdag is rated as an Advanced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Nonallergic Rhinopathy, Ozena, Primary Immunodeficiency (PID), and X-Linked Severe Combined Immunodeficiency.
Bryn Henderson is an Allergy and Immunologist and a Geriatrics provider in Orange, California. Dr. Henderson is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Dehydration, Vitamin D Deficiency, Muscle Spasms, and Cerebellar Degeneration.
Providence Medical Foundation
Bryan Nam is a primary care provider, practicing in Internal Medicine in Orange, California. Dr. Nam has been practicing medicine for over 9 years and is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Sepsis, Atypical Pneumonia, Hospital-Acquired Pneumonia, Endoscopy, and Vertebroplasty.
Catherine Garcia is a primary care provider, practicing in Family Medicine in Orange, California. Dr. Garcia is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Type 2 Diabetes (T2D), Osteomyelitis in Children, Hypertension, High Cholesterol, and Carotid Artery Surgery. Dr. Garcia is currently accepting new patients.
Ye Jung is an Allergy and Immunologist in Orange, California. Dr. Jung is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Grass Allergy, Allergic Rhinitis, Ozena, and Nonallergic Rhinopathy. Dr. Jung is currently accepting new patients.
Shahab Zahed is a primary care provider, practicing in Internal Medicine in Orange, California. Dr. Zahed is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Primary Immunodeficiency (PID), Amyotrophic Lateral Sclerosis (ALS or Lou Gehrig's Disease), Spinal Muscular Atrophy (SMA), Hip Replacement, and Gastrostomy. Dr. Zahed is currently accepting new patients.
Donald Levy is an Allergy and Immunologist in Orange, California. Dr. Levy is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Hives, Angioedema, Hereditary Angioedema, and Grass Allergy. Dr. Levy is currently accepting new patients.
Bardia Sadr is a primary care provider, practicing in Internal Medicine in Orange, California. Dr. Sadr is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Sepsis, Peptic Ulcer, Necrosis, Primary Immunodeficiency (PID), and Gastrostomy. Dr. Sadr is currently accepting new patients.
Diem-tran Nguyen is an Allergy and Immunologist in Orange, California. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Nonallergic Rhinopathy, Ozena, Hives, and Allergic Rhinitis. Dr. Nguyen is currently accepting new patients.
Providence Medical Foundation
Shirin Majdizadeh is a primary care provider, practicing in Internal Medicine in Orange, California. Dr. Majdizadeh is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Apparent Mineralocorticoid Excess, Hyperaldosteronism, Familial Hyperaldosteronism, Colonoscopy, and Endoscopy.
Providence Medical Foundation
Allen Houshiar is a primary care provider, practicing in Family Medicine in Orange, California. Dr. Houshiar is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), New Daily Persistent Headache (NDPH), Sinusitis, and Empyema.
Last Updated: 10/30/2025

