The 20 Best Activated PI3K Delta Syndrome (APDS) Doctors in Japan

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

Last Updated: 06/30/2026

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MediFind found 67 doctor with experience in Activated PI3K Delta Syndrome (APDS) near Japan. Of these, 60 are Experienced, 6 are Advanced and 1 are Distinguished.

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67 providers found
    Distinguished in Activated PI3K Delta Syndrome (APDS)

    Kohsuke Imai
    Distinguished in Activated PI3K Delta Syndrome (APDS)

    Kohsuke Imai
    Referral may be required
    Saitama, JP 

    Kohsuke Imai practices practicing medicine in Saitama, Japan. Imai is rated as a Distinguished expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). They are also highly rated in 26 other conditions, according to our data. Their clinical expertise encompasses Severe Combined Immunodeficiency (SCID), Primary Immunodeficiency (PID), X-Linked Severe Combined Immunodeficiency, Bone Marrow Transplant, and Bone Marrow Aspiration.

    Advanced in Activated PI3K Delta Syndrome (APDS)

    Tomohiro Morio
    Advanced in Activated PI3K Delta Syndrome (APDS)

    Tomohiro Morio
    Referral may be required
    Tokyo, JP 

    Tomohiro Morio practices practicing medicine in Tokyo, Japan. Mr. Morio is rated as an Advanced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 43 other conditions, according to our data. His clinical expertise encompasses Severe Combined Immunodeficiency (SCID), Infantile Neutropenia, X-Linked Severe Combined Immunodeficiency, Bone Marrow Transplant, and Bone Marrow Aspiration.

    Advanced in Activated PI3K Delta Syndrome (APDS)

    Tsubasa Okano
    Advanced in Activated PI3K Delta Syndrome (APDS)

    Tsubasa Okano
    Referral may be required
    Tokyo, JP 

    Tsubasa Okano practices practicing medicine in Tokyo, Japan. Mr. Okano is rated as an Advanced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses X-Linked Severe Combined Immunodeficiency, Primary Immunodeficiency (PID), Activated PI3K Delta Syndrome (APDS), Severe Combined Immunodeficiency (SCID), and Bone Marrow Transplant.

    Learn about our expert tiers
    Advanced in Activated PI3K Delta Syndrome (APDS)

    Tzu-wen Yeh
    Advanced in Activated PI3K Delta Syndrome (APDS)

    Tzu-wen Yeh
    Referral may be required
    Tokyo, JP 

    Tzu-wen Yeh practices practicing medicine in Tokyo, Japan. Yeh is rated as an Advanced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). They are also highly rated in 2 other conditions, according to our data. Their clinical expertise encompasses Activated PI3K Delta Syndrome (APDS), Primary Immunodeficiency (PID), X-Linked Severe Combined Immunodeficiency, and ICF Syndrome.

    Advanced in Activated PI3K Delta Syndrome (APDS)

    Shigeaki Nonoyama
    Advanced in Activated PI3K Delta Syndrome (APDS)

    Shigeaki Nonoyama
    Referral may be required
    Saitama, JP 

    Shigeaki Nonoyama practices practicing medicine in Saitama, Japan. Nonoyama is rated as an Advanced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). They are also highly rated in 12 other conditions, according to our data. Their clinical expertise encompasses Immunodeficiency with Hyper IgM Type 1, Primary Immunodeficiency (PID), X-Linked Severe Combined Immunodeficiency, Infantile Neutropenia, and Bone Marrow Transplant.

    Advanced in Activated PI3K Delta Syndrome (APDS)

    Noriko Mitsuiki
    Advanced in Activated PI3K Delta Syndrome (APDS)

    Noriko Mitsuiki
    Referral may be required
    Tokyo, JP 

    Noriko Mitsuiki practices practicing medicine in Tokyo, Japan. Ms. Mitsuiki is rated as an Advanced expert 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 Primary Immunodeficiency (PID), X-Linked Severe Combined Immunodeficiency, Activated PI3K Delta Syndrome (APDS), Severe Combined Immunodeficiency (SCID), and Bone Marrow Transplant.

    Advanced in Activated PI3K Delta Syndrome (APDS)

    Kanako Sekinaka-Mitsui
    Advanced in Activated PI3K Delta Syndrome (APDS)

    Kanako Sekinaka-Mitsui
    Referral may be required
    Saitama, JP 

    Kanako Sekinaka-Mitsui practices practicing medicine in Saitama, Japan. Ms. Sekinaka-Mitsui is rated as an Advanced expert 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), Primary Immunodeficiency (PID), Acute Megakaryoblastic Leukemia, and Lymphoid Hyperplasia.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Yuki Tsujita
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Yuki Tsujita
    Referral may be required
    Tokyo, JP 

    Yuki Tsujita practices practicing medicine in Tokyo, Japan. Tsujita is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). Their clinical expertise encompasses Activated PI3K Delta Syndrome (APDS), Immunodeficiency with Hyper IgM Type 1, Primary Immunodeficiency (PID), and Kawasaki Disease.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Osamu Ohara
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Osamu Ohara
    Referral may be required
    Kisarazu, JP 

    Osamu Ohara practices practicing medicine in Kisarazu, Japan. Mr. Ohara is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 25 other conditions, according to our data. His clinical expertise encompasses Neonatal Onset Multisystem Inflammatory Disease, Muckle-Wells Syndrome, Familial Cold Autoinflammatory Syndrome, Griscelli Syndrome, and Bone Marrow Transplant.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Yoshihiro Maruo
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Yoshihiro Maruo
    Referral may be required
    JP 

    Yoshihiro Maruo practices practicing medicine in Japan. Mr. Maruo is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Bilirubin Encephalopathy, Rotor Syndrome, Hemolytic Disease of the Newborn, and Transient Familial Hyperbilirubinemia.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Kenichi Yoshida
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Kenichi Yoshida
    Referral may be required
    Tokyo, JP 

    Kenichi Yoshida practices practicing medicine in Tokyo, Japan. Mr. Yoshida is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Myelodysplastic Syndrome (MDS), Leukemia, Aplastic Anemia, Hepatectomy, and Pancreaticoduodenectomy.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Toru Uchiyama
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Toru Uchiyama
    Referral may be required
    Tokyo, JP 

    Toru Uchiyama practices practicing medicine in Tokyo, Japan. Mr. Uchiyama is rated as an Experienced expert 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 MYH9 Related Thrombocytopenia, Chronic Granulomatous Disease, Omenn Syndrome, Bone Marrow Transplant, and Splenectomy.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Hideki Muramatsu
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Hideki Muramatsu
    Referral may be required
    Toyohashi, JP 

    Hideki Muramatsu practices practicing medicine in Toyohashi, Japan. Mr. Muramatsu is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 32 other conditions, according to our data. His clinical expertise encompasses Aplastic Anemia, Juvenile Myelomonocytic Leukemia (JMML), Anemia, Dyserythropoietic Anemia and Thrombocytopenia, and Bone Marrow Transplant.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Seiji Kojima
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Seiji Kojima
    Referral may be required
    Nagoya, JP 

    Seiji Kojima practices practicing medicine in Nagoya, Japan. Mr. Kojima is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 28 other conditions, according to our data. His clinical expertise encompasses Aplastic Anemia, Anemia, Juvenile Myelomonocytic Leukemia (JMML), Bone Marrow Transplant, and Trabeculectomy.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Seishi Ogawa
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Seishi Ogawa
    Referral may be required
    Kyoto, JP 

    Seishi Ogawa practices practicing medicine in Kyoto, Japan. Ogawa is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). They are also highly rated in 61 other conditions, according to our data. Their clinical expertise encompasses Myelodysplastic Syndrome (MDS), Leukemia, Acute Myeloid Leukemia (AML), Bone Marrow Aspiration, and Bone Marrow Transplant.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Yujin Sekinaka
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Yujin Sekinaka
    Referral may be required
    Tokorozawa, JP 

    Yujin Sekinaka practices practicing medicine in Tokorozawa, Japan. Mr. Sekinaka is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). His clinical expertise encompasses Primary Immunodeficiency (PID), Activated PI3K Delta Syndrome (APDS), Congenital Mumps, and Fanconi Anemia.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Tamaki Kato
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Tamaki Kato
    Referral may be required
    Tokyo, JP 

    Tamaki Kato practices practicing medicine in Tokyo, Japan. Ms. Kato is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Primary Lateral Sclerosis, Spinal Muscular Atrophy (SMA), Molluscum Contagiosum, and X-Linked Severe Combined Immunodeficiency.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Hirokazu Kanegane
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Hirokazu Kanegane
    Referral may be required
    Tokyo, JP 

    Hirokazu Kanegane practices practicing medicine in Tokyo, Japan. Kanegane is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). They are also highly rated in 32 other conditions, according to our data. Their clinical expertise encompasses X-Linked Lymphoproliferative Disease, Primary Immunodeficiency (PID), IPEX Syndrome, X-Linked Agammaglobulinemia, and Bone Marrow Transplant.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Fuminori Iwasaki
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Fuminori Iwasaki
    Referral may be required
    Yokohama, JP 

    Fuminori Iwasaki practices practicing medicine in Yokohama, Japan. Iwasaki is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Leukemoid Reaction, Acute Myelomonocytic Leukemia, Activated PI3K Delta Syndrome (APDS), Infantile Myofibromatosis, and Bone Marrow Transplant.

    Experienced in Activated PI3K Delta Syndrome (APDS)

    Masami Inoue
    Experienced in Activated PI3K Delta Syndrome (APDS)

    Masami Inoue
    Referral may be required
    J Oil Mills, 
    Tokyo, JP 

    Masami Inoue practices practicing medicine in Tokyo, Japan. Mr. Inoue is rated as an Experienced expert by MediFind in the treatment of Activated PI3K Delta Syndrome (APDS). He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Graft Versus Host Disease (GvHD), Leukemia, Acute Lymphoblastic Leukemia (ALL), Histiocytosis, and Bone Marrow Transplant.

    While we make every effort to provide the best results possible, data is currently limited outside of the United States. Doctors listed may include both clinicians and researchers, and individuals relocate frequently. We recommend contacting doctors directly to confirm their location and areas of focus. Contact information is provided when available. Learn more about our expert tiers.
    Showing 1-20 of 67

    Last Updated: 06/30/2026

    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 in Japan?

    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 in Japan?

    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 do I find the best Activated PI3K Delta Syndrome (APDS) doctor in Japan?

    You can find an Activated PI3K Delta Syndrome (APDS) doctor in any of the 10 largest U.S. cities by clicking below:

    Activated PI3K Delta Syndrome (APDS) doctor near New York, NY
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    Activated PI3K Delta Syndrome (APDS) doctor near San Jose, CA

    How does MediFind rank Activated PI3K Delta Syndrome (APDS) doctors in Japan?

    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 in Japan?

    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 in Japan?

    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 in Japan?

    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 in Japan?

    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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