The 20 Best L1 Syndrome Doctors in Japan

Find the Top L1 Syndrome Experts and Specialists

Last Updated: 06/30/2026

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MediFind found 66 doctor with experience in L1 Syndrome near Japan. Of these, 57 are Experienced, 8 are Advanced and 1 are Distinguished.

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66 providers found
    Distinguished in L1 Syndrome

    Hiroaki Goto
    Distinguished in L1 Syndrome

    Hiroaki Goto
    Referral may be required
    Yokohama, JP 

    Hiroaki Goto practices practicing medicine in Yokohama, Japan. Mr. Goto is rated as a Distinguished expert by MediFind in the treatment of L1 Syndrome. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Acute Lymphoblastic Leukemia (ALL), Leukemia, Leukemoid Reaction, Bone Marrow Transplant, and Bone Graft.

    Advanced in L1 Syndrome

    Nobutaka Kiyokawa
    Advanced in L1 Syndrome

    Nobutaka Kiyokawa
    Referral may be required
    Tokyo, JP 

    Nobutaka Kiyokawa practices practicing medicine in Tokyo, Japan. Kiyokawa is rated as an Advanced expert by MediFind in the treatment of L1 Syndrome. They are also highly rated in 8 other conditions, according to our data. Their clinical expertise encompasses Acute Lymphoblastic Leukemia (ALL), Leukemia, Childhood Acute Myeloid Leukemia, Tissue Biopsy, and Bone Marrow Transplant.

    Advanced in L1 Syndrome

    Tsutomu Toki
    Advanced in L1 Syndrome

    Tsutomu Toki
    Referral may be required
    Hirosaki, JP 

    Tsutomu Toki practices practicing medicine in Hirosaki, Japan. Mr. Toki is rated as an Advanced expert by MediFind in the treatment of L1 Syndrome. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Pure Red Cell Aplasia, Aase Syndrome, Down Syndrome, Acute Megakaryoblastic Leukemia, and Bone Marrow Transplant.

    Learn about our expert tiers
    Advanced in L1 Syndrome

    Atsushi Manabe
    Advanced in L1 Syndrome

    Atsushi Manabe
    Referral may be required
    Sapporo, JP 

    Atsushi Manabe practices practicing medicine in Sapporo, Japan. Mr. Manabe is rated as an Advanced expert by MediFind in the treatment of L1 Syndrome. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Acute Lymphoblastic Leukemia (ALL), Leukemia, Juvenile Myelomonocytic Leukemia (JMML), Infantile Neutropenia, and Bone Marrow Transplant.

    Advanced in L1 Syndrome

    Etsuro Ito
    Advanced in L1 Syndrome

    Etsuro Ito
    Referral may be required
    Hirosaki, JP 

    Etsuro Ito practices practicing medicine in Hirosaki, Japan. Ito is rated as an Advanced expert by MediFind in the treatment of L1 Syndrome. They are also highly rated in 18 other conditions, according to our data. Their clinical expertise encompasses Aase Syndrome, Pure Red Cell Aplasia, Aplastic Anemia, Transient Erythroblastopenia of Childhood, and Bone Marrow Transplant.

    Advanced in L1 Syndrome

    Takeshi Inukai
    Advanced in L1 Syndrome

    Takeshi Inukai
    Referral may be required
    Chuo, JP 

    Takeshi Inukai practices practicing medicine in Chuo, Japan. Mr. Inukai is rated as an Advanced expert by MediFind in the treatment of L1 Syndrome. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Acute Lymphoblastic Leukemia (ALL), Leukemia, Chronic Myelogenous Leukemia (CML), L1 Syndrome, and Bone Marrow Transplant.

    Advanced in L1 Syndrome

    Yonehiro Kanemura
    Advanced in L1 Syndrome

    Yonehiro Kanemura
    Referral may be required
    Osaka, JP 

    Yonehiro Kanemura practices practicing medicine in Osaka, Japan. Kanemura is rated as an Advanced expert by MediFind in the treatment of L1 Syndrome. They are also highly rated in 26 other conditions, according to our data. Their clinical expertise encompasses Hydrocephalus due to Congenital Stenosis of Aqueduct of Sylvius, Glioma, Gliomatosis Cerebri, Brain Tumor, and Liver Embolization.

    Advanced in L1 Syndrome

    Kiminori Terui
    Advanced in L1 Syndrome

    Kiminori Terui
    Referral may be required
    Hirosaki, JP 

    Kiminori Terui practices practicing medicine in Hirosaki, Japan. Terui is rated as an Advanced expert by MediFind in the treatment of L1 Syndrome. They are also highly rated in 16 other conditions, according to our data. Their clinical expertise encompasses Leukemoid Reaction, Down Syndrome, Aase Syndrome, Pure Red Cell Aplasia, and Bone Marrow Transplant.

    Advanced in L1 Syndrome

    Yasuhide Hayashi
    Advanced in L1 Syndrome

    Yasuhide Hayashi
    Referral may be required
    Shibukawa, JP 

    Yasuhide Hayashi practices practicing medicine in Shibukawa, Japan. Hayashi is rated as an Advanced expert by MediFind in the treatment of L1 Syndrome. They are also highly rated in 10 other conditions, according to our data. Their clinical expertise encompasses Childhood Acute Myeloid Leukemia, Leukemoid Reaction, Acute Myeloid Leukemia (AML), and Leukemia.

    Experienced in L1 Syndrome

    Satoru I. Takahashi
    Experienced in L1 Syndrome

    Satoru I. Takahashi
    Referral may be required
    Asahikawa, JP 

    Satoru Takahashi practices practicing medicine in Asahikawa, Japan. Mr. Takahashi is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. He is also highly rated in 35 other conditions, according to our data. His clinical expertise encompasses Multicentric Carpotarsal Osteolysis Syndrome, Prostate Cancer, Rett Syndrome, Endoscopy, and Thrombectomy.

    Experienced in L1 Syndrome

    Yasuhiro Okamoto
    Experienced in L1 Syndrome

    Yasuhiro Okamoto
    Referral may be required
    Kagoshima, JP 

    Yasuhiro Okamoto practices practicing medicine in Kagoshima, Japan. Mr. Okamoto is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Acute Lymphoblastic Leukemia (ALL), Leukemia, Childhood Acute Myeloid Leukemia, Bone Marrow Transplant, and Bone Marrow Aspiration.

    Experienced in L1 Syndrome

    Shinsuke Hirabayashi
    Experienced in L1 Syndrome

    Shinsuke Hirabayashi
    Referral may be required
    Sapporo, JP 

    Shinsuke Hirabayashi practices practicing medicine in Sapporo, Japan. Hirabayashi is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. They are also highly rated in 10 other conditions, according to our data. Their clinical expertise encompasses Chromosome 7p Deletion, Acute Lymphoblastic Leukemia (ALL), Leukemia, Myelodysplastic Syndrome (MDS), and Bone Marrow Transplant.

    Experienced in L1 Syndrome

    Tatsuo Mori
    Experienced in L1 Syndrome

    Tatsuo Mori
    Referral may be required
    Tokushima, JP 

    Tatsuo Mori practices practicing medicine in Tokushima, Japan. Mr. Mori is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses West Syndrome, Epilepsy in Children, Spasmus Nutans, L1 Syndrome, and Salpingo-Oophorectomy.

    Experienced in L1 Syndrome

    Atsushi Kohso
    Experienced in L1 Syndrome

    Atsushi Kohso
    Referral may be required
    Tsu, JP 

    Atsushi Kohso practices practicing medicine in Tsu, Japan. Mr. Kohso is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. His clinical expertise encompasses L1 Syndrome, Leukemoid Reaction, Down Syndrome, and Acute Lymphoblastic Leukemia (ALL).

    Experienced in L1 Syndrome

    Hidemi Toyoda
    Experienced in L1 Syndrome

    Hidemi Toyoda
    Referral may be required
    Tsu, JP 

    Hidemi Toyoda practices practicing medicine in Tsu, Japan. Mr. Toyoda is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Thrombocytopenia, Acute Lymphoblastic Leukemia (ALL), Neuroblastoma, Ileostomy, and Bone Marrow Transplant.

    Experienced in L1 Syndrome

    Yosuke Okumura
    Experienced in L1 Syndrome

    Yosuke Okumura
    Referral may be required
    Tsu, JP 

    Yosuke Okumura practices practicing medicine in Tsu, Japan. Mr. Okumura is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. His clinical expertise encompasses L1 Syndrome, Atypical Hemolytic Uremic Syndrome (aHUS), D-Plus Hemolytic Uremic Syndrome, Hemolytic-Uremic Syndrome, and Bone Marrow Aspiration.

    Experienced in L1 Syndrome

    Masatomo Miura
    Experienced in L1 Syndrome

    Masatomo Miura
    Referral may be required
    Akita, JP 

    Masatomo Miura practices practicing medicine in Akita, Japan. Miura is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. They are also highly rated in 5 other conditions, according to our data. Their clinical expertise encompasses Coronary Artery Aneurysm, Chronic Myelogenous Leukemia (CML), Leukemia, Kidney Transplant, and Nephrectomy.

    Experienced in L1 Syndrome

    Keizo Horibe
    Experienced in L1 Syndrome

    Keizo Horibe
    Referral may be required
    Nagoya, JP 

    Keizo Horibe practices practicing medicine in Nagoya, Japan. Horibe is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. They are also highly rated in 12 other conditions, according to our data. Their clinical expertise encompasses Childhood Acute Myeloid Leukemia, Acute Lymphoblastic Leukemia (ALL), Leukemia, Acute Myeloid Leukemia (AML), and Bone Marrow Transplant.

    Experienced in L1 Syndrome

    Michinori Toriyama
    Experienced in L1 Syndrome

    Michinori Toriyama
    Referral may be required
    Sanda, JP 

    Michinori Toriyama practices practicing medicine in Sanda, Japan. Toriyama is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Oral-Facial-Digital Syndrome, Hydrocephalus due to Congenital Stenosis of Aqueduct of Sylvius, Spastic Paraplegia Type 11, and L1 Syndrome.

    Experienced in L1 Syndrome

    Takeshi Mizuguchi
    Experienced in L1 Syndrome

    Takeshi Mizuguchi
    Referral may be required
    Yokohama, JP 

    Takeshi Mizuguchi practices practicing medicine in Yokohama, Japan. Mr. Mizuguchi is rated as an Experienced expert by MediFind in the treatment of L1 Syndrome. He is also highly rated in 33 other conditions, according to our data. His clinical expertise encompasses Neuronal Intranuclear Inclusion Disease (NIID), Pontocerebellar Hypoplasia, Cornelia De Lange Syndrome, and Miller Syndrome.

    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 66

    Last Updated: 06/30/2026

    What is the definition of L1 Syndrome?

    L1 syndrome describes a group of conditions that primarily affect the nervous system and occur almost exclusively in males. These conditions vary in severity and include, from most severe to least, X-linked hydrocephalus with stenosis of the aqueduct of Sylvius (HSAS), MASA syndrome, spastic paraplegia type 1, and X-linked complicated corpus callosum agenesis.

    When should I see a L1 Syndrome 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 a L1 Syndrome 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 L1 Syndrome doctor in Japan?

    You can find a L1 Syndrome doctor in any of the 10 largest U.S. cities by clicking below:

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    How does MediFind rank L1 Syndrome 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 L1 Syndrome 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 a L1 Syndrome 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 L1 Syndrome doctor search results page. 

    Why is it important to get a second opinion from a different L1 Syndrome 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 a L1 Syndrome 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 L1 Syndrome 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 L1 Syndrome 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 L1 Syndrome doctors in Japan?

    Look for the filter feature on the left side of the L1 Syndrome 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 a L1 Syndrome doctor that offers video calls?

    Look for the filter feature on the left-side of the L1 Syndrome 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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