The 20 Best Activated PI3K Delta Syndrome (APDS) Doctors Near Me in orange, CA

Find the Top Activated PI3K Delta Syndrome (APDS) Experts and Specialists

Last Updated: 09/26/2026

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MediFind found 13 doctor with experience in Activated PI3K Delta Syndrome (APDS) near orange, CA. Of these, 11 are Experienced and 2 are Advanced.

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13 providers found
    Advanced in Activated PI3K Delta Syndrome (APDS)
    Medical Genetics
    Advanced in Activated PI3K Delta Syndrome (APDS)
    Medical Genetics
    Referral may be required
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Richard Chang is a Medical Genetics provider practicing medicine in Orange, California. Dr. Chang is rated as an Advanced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 156 other conditions, according to our data. His clinical expertise encompasses Phenylketonuria (PKU), Very Long-Chain Acyl-CoA Dehydrogenase (VLCAD) Deficiency, Maternal Hyperphenylalaninemia, and Adrenoleukodystrophy (ALD). Dr. Chang is currently accepting new patients.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Medical Genetics
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Medical Genetics
    Referral may be required
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Raymond Wang is a Medical Genetics provider practicing medicine in Orange, California. Dr. Wang is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 47 other conditions, according to our data. His clinical expertise encompasses Mucopolysaccharidosis Type 4A (MPS IVA, Morquio Syndrome Type A), Mucopolysaccharidosis Type 4 (MPS IV, Morquio Syndrome), Mucopolysaccharidoses (MPS), and Mucopolysaccharidosis Type 2 (MPS II, Hunter Syndrome). Dr. Wang is currently accepting new patients.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Medical Genetics
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Medical Genetics
    Referral may be required
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Jose Abdenur is a Medical Genetics provider practicing medicine in Orange, California. Dr. Abdenur is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 42 other conditions, according to our data. His clinical expertise encompasses Von Gierke Disease, Glycogen Storage Disease Type 9, Glycogen Storage Disease Type 3, and Malonyl-CoA Decarboxylase Deficiency. Dr. Abdenur is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Pediatric Gastroenterology
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Pediatric Gastroenterology
    Referral may be required
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Gregory Wong is a Pediatric Gastroenterologist practicing medicine in Orange, California. Dr. Wong is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Total Intestinal Aganglionosis, Hirschsprung Disease, Wolf-Hirschhorn Syndrome, and Neurogenic Bowel. Dr. Wong is currently accepting new patients.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Neurology | Pediatric Neurology
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Neurology | Pediatric Neurology
    Referral may be required
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Amanda Fernandez is a Neurologist and a Pediatric Neurologist practicing medicine in Orange, California. Dr. Fernandez is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). She is also highly rated in 81 other conditions, according to our data. Her clinical expertise encompasses Seizures, Dysferlinopathy, Memory Loss, and Genetic Epilepsy with Febrile Seizures Plus (GEFS+). Dr. Fernandez is currently accepting new patients.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Medical Genetics
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Medical Genetics
    Referral may be required
    1201 W La Veta Ave, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Walla Al-Hertani is a Medical Genetics provider practicing medicine in Orange, California. Dr. Al-Hertani is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). She is also highly rated in 62 other conditions, according to our data. Her clinical expertise encompasses Von Gierke Disease, Classic Galactosemia, Andersen Disease, and Glycogen Storage Disease Type 0. Dr. Al-Hertani is currently accepting new patients.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Referral may be required

    Choc Hematology

    1201 W La Veta Ave, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English

    David Buchbinder is a Pediatrics provider practicing medicine in Orange, California. Dr. Buchbinder is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Infantile Neutropenia, Venous Thromboembolism (VTE), Anemia, Immune Thrombocytopenic Purpura (ITP), and Bone Graft. Dr. Buchbinder is board certified in American Board Pediatrics.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Referral may be required

    CHOC Children's Hospital

    1201 W La Veta Ave, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English

    Sarah Brennan is a Pediatrics provider practicing medicine in Orange, California. Dr. Brennan is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Cerebral Hypoxia, Malnutrition, Infant Botulism, and Asthma in Children.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Referral may be required

    PSF Cardiology

    455 S Main St, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English

    Katherine Andreeff is a Pediatrics provider practicing medicine in Orange, California. Dr. Andreeff is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Epilepsy in Children, Autism Spectrum Disorder, Genetic Epilepsy with Febrile Seizures Plus (GEFS+), and Cerebral Hypoxia.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Allergy and Immunology
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Allergy and Immunology
    Referral may be required

    Gottschalk Medical Plaza

    1 Medical Plaza Drive, 
    Irvine, CA 
     (9.7 miles away)
    Languages Spoken:
    English, Hindi
    Offers Telehealth

    Sudhir Gupta is an Allergy and Immunologist practicing medicine in Irvine, California. Dr. Gupta is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Primary Immunodeficiency (PID), Common Variable Immune Deficiency, X-Linked Agammaglobulinemia, and Immunodeficiency with Hyper IgM Type 1. Dr. Gupta is board certified in American Board Of Allergy And Immunology - Allergy And Immunology.

    Advanced in Activated PI3K Delta Syndrome (APDS)
    Advanced in Activated PI3K Delta Syndrome (APDS)

    Southern California Ear, Nose And Throat

    10861 Cherry St Ste 200, 
    Los Alamitos, CA 
     (11.9 miles away)
    Languages Spoken:
    English

    Alexandra Chrysanthis is a primary care provider, practicing in Internal Medicine in Los Alamitos, California. Dr. Chrysanthis is rated as an Advanced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Activated PI3K Delta Syndrome (APDS), Chronic Cough, Vertigo, and Fainting.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Referral may be required

    Steven Beanes M.D. Inc

    1401 Avocado Ave Ste 303, 
    Newport Beach,, CA 
     (10.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Kim Swanson is a Cardiologist practicing medicine in Newport Beach,, California. Dr. Swanson is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Sitosterolemia, Coronary Heart Disease, Atherosclerosis, and High Cholesterol. Dr. Swanson is currently accepting new patients.

    Experienced in Activated PI3K Delta Syndrome (APDS)
    Family Medicine
    Experienced in Activated PI3K Delta Syndrome (APDS)
    Family Medicine

    MemorialCare Medical Group - Long Beach

    2110 N Bellflower Blvd Ste 200, 
    Long Beach, CA 
     (15.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Tuong Bui is a primary care provider, practicing in Family Medicine in Long Beach, California. Dr. Bui is rated as an Experienced provider by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

    Showing 1-13 of 13

    Last Updated: 09/26/2026

    What is the definition of Activated PI3K Delta Syndrome (APDS)?

    Activated PI3K-delta syndrome (also known as APDS) is a disorder that impairs the immune system. Individuals with this condition often have low numbers of white blood cells (lymphopenia), particularly B cells and T cells. Normally, these cells recognize and attack foreign invaders, such as viruses and bacteria, to prevent infection. The severity of activated PI3K-delta syndrome varies widely. Some people may have multiple, severe infections while others show mild symptoms to none at all.

    When should I see an Activated PI3K Delta Syndrome (APDS) doctor near orange, CA?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing an Activated PI3K Delta Syndrome (APDS) doctor near orange, CA?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank Activated PI3K Delta Syndrome (APDS) doctors near orange, CA?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Activated PI3K Delta Syndrome (APDS) doctors near orange, CA?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with an Activated PI3K Delta Syndrome (APDS) doctor near orange, CA?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Activated PI3K Delta Syndrome (APDS) doctor search results page. 

    Why is it important to get a second opinion from a different Activated PI3K Delta Syndrome (APDS) doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with an Activated PI3K Delta Syndrome (APDS) doctor near orange, CA?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Activated PI3K Delta Syndrome (APDS) doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Activated PI3K Delta Syndrome (APDS) doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Activated PI3K Delta Syndrome (APDS) doctors near orange, CA?

    Look for the filter feature on the left side of the Activated PI3K Delta Syndrome (APDS) doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find an Activated PI3K Delta Syndrome (APDS) doctor that offers video calls?

    Look for the filter feature on the left-side of the Activated PI3K Delta Syndrome (APDS) doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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