The 20 Best Homocystinuria due to MTHFR Deficiency Doctors in Japan

Find the Top Homocystinuria due to MTHFR Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 32 doctor with experience in Homocystinuria due to MTHFR Deficiency near Japan. Of these, 28 are Experienced and 4 are Advanced.

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32 providers found
    Advanced in Homocystinuria due to MTHFR Deficiency

    Hitoshi Osaka
    Advanced in Homocystinuria due to MTHFR Deficiency

    Hitoshi Osaka
    Shimotsuke, JP 

    Hitoshi Osaka practices practicing medicine in Shimotsuke, Japan. Mr. Osaka is rated as an Advanced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. He is also highly rated in 34 other conditions, according to our data. His clinical expertise encompasses Pelizaeus-Merzbacher Disease, CACH Syndrome, Leigh Syndrome, Cerebellar Hypoplasia, and Liver Transplant.

    Advanced in Homocystinuria due to MTHFR Deficiency

    Tomoyuki Akiyama
    Advanced in Homocystinuria due to MTHFR Deficiency

    Tomoyuki Akiyama
    Okayama, JP 

    Tomoyuki Akiyama practices practicing medicine in Okayama, Japan. Mr. Akiyama is rated as an Advanced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Epilepsy, Hypophosphatasia (HPP), Seizures, Epilepsy in Children, and Deep Brain Stimulation.

    Advanced in Homocystinuria due to MTHFR Deficiency

    Katsuhiro Kobayashi
    Advanced in Homocystinuria due to MTHFR Deficiency

    Katsuhiro Kobayashi
    Okayama, JP 

    Katsuhiro Kobayashi practices practicing medicine in Okayama, Japan. Kobayashi is rated as an Advanced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. They are also highly rated in 15 other conditions, according to our data. Their clinical expertise encompasses West Syndrome, Epilepsy in Children, Spasmus Nutans, and Epilepsy.

    Learn about our expert tiers
    Advanced in Homocystinuria due to MTHFR Deficiency

    Takafumi Sakakibara
    Advanced in Homocystinuria due to MTHFR Deficiency

    Takafumi Sakakibara
    Nara-shi, JP 

    Takafumi Sakakibara practices practicing medicine in Nara-shi, Japan. Sakakibara is rated as an Advanced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Homocystinuria due to MTHFR Deficiency, Hypomelanosis of Ito, Homocystinuria, and Epilepsy in Children.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Mari Akiyama
    Experienced in Homocystinuria due to MTHFR Deficiency

    Mari Akiyama
    Okayama, JP 

    Mari Akiyama practices practicing medicine in Okayama, Japan. Ms. Akiyama is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Epilepsy, Homocystinuria due to MTHFR Deficiency, Epilepsy with Myoclonic-Atonic Seizures, and Myoclonic Epilepsy.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Mitsuru Saito
    Experienced in Homocystinuria due to MTHFR Deficiency

    Mitsuru Saito
    Minato, JP 

    Mitsuru Saito practices practicing medicine in Minato, Japan. Mr. Saito is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Osteoporosis, Renal Cell Carcinoma (RCC), Prostate Cancer, Kidney Transplant, and Nephrectomy.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Masahiko Tomiyama
    Experienced in Homocystinuria due to MTHFR Deficiency

    Masahiko Tomiyama
    Hirosaki, JP 

    Masahiko Tomiyama practices practicing medicine in Hirosaki, Japan. Tomiyama is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. They are also highly rated in 11 other conditions, according to our data. Their clinical expertise encompasses Movement Disorders, Drug Induced Dyskinesia, Parkinson's Disease, Gastrostomy, and Thymectomy.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Hirofumi Kusaka
    Experienced in Homocystinuria due to MTHFR Deficiency

    Hirofumi Kusaka
    Hirakata, JP 

    Hirofumi Kusaka practices practicing medicine in Hirakata, Japan. Kusaka is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. They are also highly rated in 4 other conditions, according to our data. Their clinical expertise encompasses Neuronal Intranuclear Inclusion Disease (NIID), Cerebelloolivary Atrophy, Inclusion Body Myositis, Thrombectomy, and Thymectomy.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Tomohiko Ishihara
    Experienced in Homocystinuria due to MTHFR Deficiency

    Tomohiko Ishihara
    Clinical Neuroscience Branch, 
    Niigata, JP 

    Tomohiko Ishihara practices practicing medicine in Niigata, Japan. Ishihara is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. They are also highly rated in 5 other conditions, according to our data. Their clinical expertise encompasses Amyotrophic Lateral Sclerosis (ALS or Lou Gehrig's Disease), Primary Lateral Sclerosis, Spinocerebellar Ataxia Type 6, and Acute Cerebellar Ataxia.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Takenobu Kunieda
    Experienced in Homocystinuria due to MTHFR Deficiency

    Takenobu Kunieda
    Hirakata, JP 

    Takenobu Kunieda practices practicing medicine in Hirakata, Japan. Kunieda is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Primary Lateral Sclerosis, Amyotrophic Lateral Sclerosis (ALS or Lou Gehrig's Disease), Tumefactive Multiple Sclerosis, Thrombectomy, and Thymectomy.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Naohiro Yamamoto
    Experienced in Homocystinuria due to MTHFR Deficiency

    Naohiro Yamamoto
    Nara-shi, JP 

    Naohiro Yamamoto practices practicing medicine in Nara-shi, Japan. Yamamoto is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. They are also highly rated in 5 other conditions, according to our data. Their clinical expertise encompasses West Syndrome, Tay-Sachs Disease, Gangliosidosis, and Spasmus Nutans.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Haruo Nishijima
    Experienced in Homocystinuria due to MTHFR Deficiency

    Haruo Nishijima
    Hirosaki, JP 

    Haruo Nishijima practices practicing medicine in Hirosaki, Japan. Mr. Nishijima is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Drug Induced Dyskinesia, Neurotoxicity Syndromes, Parkinson's Disease, Movement Disorders, and Thymectomy.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Katsumi Imai
    Experienced in Homocystinuria due to MTHFR Deficiency

    Katsumi Imai
    Shizuoka, JP 

    Katsumi Imai practices practicing medicine in Shizuoka, Japan. Mr. Imai is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Epilepsy in Children, Epilepsy, Infant Epilepsy with Migrant Focal Crisis, and Dravet Syndrome.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Jun Tohyama
    Experienced in Homocystinuria due to MTHFR Deficiency

    Jun Tohyama
    Nishi, JP 

    Jun Tohyama practices practicing medicine in Nishi, Japan. Mr. Tohyama is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses West Syndrome, Epilepsy, Myoclonic Epilepsy, and Spasmus Nutans.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Harumi Yoshinaga
    Experienced in Homocystinuria due to MTHFR Deficiency

    Harumi Yoshinaga
    Hayashima, JP 

    Harumi Yoshinaga practices practicing medicine in Hayashima, Japan. Ms. Yoshinaga is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses West Syndrome, Epilepsy in Children, Spasmus Nutans, and Epilepsy.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Miyuki Watanabe
    Experienced in Homocystinuria due to MTHFR Deficiency

    Miyuki Watanabe
    Tochigi, JP 

    Miyuki Watanabe practices practicing medicine in Tochigi, Japan. Ms. Watanabe is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Leigh Syndrome, Coenzyme Q Cytochrome C Reductase Deficiency, Homocystinuria due to MTHFR Deficiency, and Homocystinuria.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Shiho Aoki
    Experienced in Homocystinuria due to MTHFR Deficiency

    Shiho Aoki
    Shimotsuke, JP 

    Shiho Aoki practices practicing medicine in Shimotsuke, Japan. Ms. Aoki is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. Her clinical expertise encompasses Congenital Hepatic Fibrosis, Leigh Syndrome, Homocystinuria due to MTHFR Deficiency, and Acute Megakaryoblastic Leukemia.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Kaoruko Kanamaru
    Experienced in Homocystinuria due to MTHFR Deficiency

    Kaoruko Kanamaru
    Kobe, JP 

    Kaoruko Kanamaru practices practicing medicine in Kobe, Japan. Kanamaru is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. Their clinical expertise encompasses Homocystinuria due to MTHFR Deficiency, Biliary Dyskinesia, Intussusception in Children, and Burkitt Lymphoma.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Ichiro Kuki
    Experienced in Homocystinuria due to MTHFR Deficiency

    Ichiro Kuki
    Osaka, JP 

    Ichiro Kuki practices practicing medicine in Osaka, Japan. Mr. Kuki is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses West Syndrome, Seizures, Spasmus Nutans, Absence Seizure, and Pacemaker Implantation.

    Experienced in Homocystinuria due to MTHFR Deficiency

    Hiroko Shimbo
    Experienced in Homocystinuria due to MTHFR Deficiency

    Hiroko Shimbo
    Yokohama, JP 

    Hiroko Shimbo practices practicing medicine in Yokohama, Japan. Ms. Shimbo is rated as an Experienced expert by MediFind in the treatment of Homocystinuria due to MTHFR Deficiency. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Leigh Syndrome, X-Linked Creatine Deficiency, Chromosome 7p Deletion, and Pelizaeus-Merzbacher Disease.

    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 32

    Last Updated: 04/28/2026

    What is the definition of Homocystinuria due to MTHFR Deficiency?

    Homocystinuria due to MTHFR deficiency is a genetic condition that results from poor metabolism of folate (also called vitamin B9), due to a lack of working enzyme called MTHFR. The gene that tells our body how to make the enzyme is also called MTHFR. At least 40 rare MTHFR gene variants have been found in people with decreased or no working enzyme. Very common gene variants (C677T and A1298C) can cause some decrease in enzyme function. People with Homocystinuria due to MTHFR deficiency tend to have two rare variants or sometimes a rare variant and a common variant. Very rarely people inherit a combination of three or four common variants from their parents (for example two C677T variants and two A1298C variants) and may also develop very high levels of homocystine in their body. Homocystinuria usually does not show symptoms in a newborn baby. Symptoms may include abnormal clotting, developmental delay, seizures, intellectual disability, and microcephaly. Severe homocystinuria can also be caused by gene variants in other genes besides MTHFR.

    When should I see a Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency doctor in Japan?

    You can find a Homocystinuria due to MTHFR Deficiency doctor in any of the 10 largest U.S. cities by clicking below:

    Homocystinuria due to MTHFR Deficiency doctor near New York, NY
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    Homocystinuria due to MTHFR Deficiency doctor near Atlanta, GA
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    Homocystinuria due to MTHFR Deficiency doctor near Dallas, TX
    Homocystinuria due to MTHFR Deficiency doctor near San Jose, CA

    How does MediFind rank Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency doctor search results page. 

    Why is it important to get a second opinion from a different Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency doctors in Japan?

    Look for the filter feature on the left side of the Homocystinuria due to MTHFR Deficiency 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 Homocystinuria due to MTHFR Deficiency doctor that offers video calls?

    Look for the filter feature on the left-side of the Homocystinuria due to MTHFR Deficiency 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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