The 20 Best Williams Syndrome Doctors in Japan

Find the Top Williams Syndrome Experts and Specialists

Last Updated: 06/30/2026

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MediFind found 184 doctor with experience in Williams Syndrome near Japan. Of these, 161 are Experienced, 16 are Advanced and 7 are Distinguished.

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184 providers found
    Distinguished in Williams Syndrome

    Ryo Kimura
    Distinguished in Williams Syndrome

    Ryo Kimura
    Referral may be required
    Osaka, JP 

    Ryo Kimura practices practicing medicine in Osaka, Japan. Mr. Kimura is rated as a Distinguished expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Williams Syndrome, Autism Spectrum Disorder, Burkitt Lymphoma, and Schizophrenia.

    Distinguished in Williams Syndrome

    Masahiro Hirai
    Distinguished in Williams Syndrome

    Masahiro Hirai
    Referral may be required
    Tochigi, JP 

    Masahiro Hirai practices practicing medicine in Tochigi, Japan. Mr. Hirai is rated as a Distinguished expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Williams Syndrome and Autism Spectrum Disorder.

    Distinguished in Williams Syndrome

    Toshio Heike
    Distinguished in Williams Syndrome

    Toshio Heike
    Referral may be required
    Amagasaki, JP 

    Toshio Heike practices practicing medicine in Amagasaki, Japan. Mr. Heike is rated as a Distinguished expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Muckle-Wells Syndrome, Neonatal Onset Multisystem Inflammatory Disease, Familial Cold Autoinflammatory Syndrome, Bone Marrow Aspiration, and Hepato-Pancreato-Biliary Surgery.

    Learn about our expert tiers
    Distinguished in Williams Syndrome

    Tomonari Awaya
    Distinguished in Williams Syndrome

    Tomonari Awaya
    Referral may be required
    Kyoto, JP 

    Tomonari Awaya practices practicing medicine in Kyoto, Japan. Awaya is rated as a Distinguished expert by MediFind in the treatment of Williams Syndrome. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Williams Syndrome, Retinal Vasculopathy with Cerebral Leukodystrophy, Hereditary Sensory and Autonomic Neuropathy Type 2, and Hajdu-Cheney Syndrome.

    Distinguished in Williams Syndrome

    Kiyotaka Tomiwa
    Distinguished in Williams Syndrome

    Kiyotaka Tomiwa
    Referral may be required
    Nara-shi, JP 

    Kiyotaka Tomiwa practices practicing medicine in Nara-shi, Japan. Tomiwa is rated as a Distinguished expert by MediFind in the treatment of Williams Syndrome. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Williams Syndrome, Gillespie Syndrome, Autism Spectrum Disorder, and Spinocerebellar Degeneration and Corneal Dystrophy.

    Distinguished in Williams Syndrome

    Masatoshi N. Hagiwara
    Distinguished in Williams Syndrome

    Masatoshi N. Hagiwara
    Referral may be required
    Kyoto, JP 

    Masatoshi Hagiwara practices practicing medicine in Kyoto, Japan. Mr. Hagiwara is rated as a Distinguished expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Williams Syndrome, Hajdu-Cheney Syndrome, Hereditary Sensory and Autonomic Neuropathy Type 2, Platelet Storage Pool Deficiency, and Orchiectomy.

    Distinguished in Williams Syndrome

    Miho Nakamura
    Distinguished in Williams Syndrome

    Miho Nakamura
    Referral may be required
    Okazaki, JP 

    Miho Nakamura practices practicing medicine in Okazaki, Japan. Ms. Nakamura is rated as a Distinguished expert by MediFind in the treatment of Williams Syndrome. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Williams Syndrome, Periventricular Leukomalacia, Anton Syndrome, and Kabuki Syndrome.

    Advanced in Williams Syndrome

    Shin Okazaki
    Advanced in Williams Syndrome

    Shin Okazaki
    Referral may be required
    Osaka, JP 

    Shin Okazaki practices practicing medicine in Osaka, Japan. Okazaki is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. They are also highly rated in 10 other conditions, according to our data. Their clinical expertise encompasses West Syndrome, Williams Syndrome, Spasmus Nutans, Pacemaker Implantation, and Gastrostomy.

    Advanced in Williams Syndrome

    Takeo Kato
    Advanced in Williams Syndrome

    Takeo Kato
    Referral may be required
    Moriyama, JP 

    Takeo Kato practices practicing medicine in Moriyama, Japan. Mr. Kato is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Williams Syndrome, Tension Headache, Athetosis, and Autism Spectrum Disorder.

    Advanced in Williams Syndrome

    Yukako Muramatsu
    Advanced in Williams Syndrome

    Yukako Muramatsu
    Referral may be required
    Nagoya, JP 

    Yukako Muramatsu practices practicing medicine in Nagoya, Japan. Muramatsu is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. They are also highly rated in 5 other conditions, according to our data. Their clinical expertise encompasses Williams Syndrome, Esophageal Atresia Coloboma Talipes, Chromosome 13q Deletion, and Imperforate Anus.

    Advanced in Williams Syndrome

    Seiji Mizuno
    Advanced in Williams Syndrome

    Seiji Mizuno
    Referral may be required
    Kasugai, JP 

    Seiji Mizuno practices practicing medicine in Kasugai, Japan. Mr. Mizuno is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 27 other conditions, according to our data. His clinical expertise encompasses Increased Head Circumference, Achalasia Microcephaly Syndrome, Microcephaly, and Kabuki Syndrome.

    Advanced in Williams Syndrome

    Ayaka Ikeda
    Advanced in Williams Syndrome

    Ayaka Ikeda
    Referral may be required
    Kanagawa, JP 

    Ayaka Ikeda practices practicing medicine in Kanagawa, Japan. Ms. Ikeda is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Williams Syndrome and Autism Spectrum Disorder.

    Advanced in Williams Syndrome

    Kosuke Asada
    Advanced in Williams Syndrome

    Kosuke Asada
    Referral may be required
    Susaki, JP 

    Kosuke Asada practices practicing medicine in Susaki, Japan. Mr. Asada is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Williams Syndrome and Autism Spectrum Disorder.

    Advanced in Williams Syndrome

    Takanori Yamagata
    Advanced in Williams Syndrome

    Takanori Yamagata
    Referral may be required
    Utsunomiya, JP 

    Takanori Yamagata practices practicing medicine in Utsunomiya, Japan. Mr. Yamagata is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Miller Syndrome, Williams Syndrome, Leigh Syndrome, Autism Spectrum Disorder, and Endoscopy.

    Advanced in Williams Syndrome

    Yoko Hakuno
    Advanced in Williams Syndrome

    Yoko Hakuno
    Referral may be required
    Tokyo, JP 

    Yoko Hakuno practices practicing medicine in Tokyo, Japan. Ms. Hakuno is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Williams Syndrome and Autism Spectrum Disorder.

    Advanced in Williams Syndrome

    Toshiya Murai
    Advanced in Williams Syndrome

    Toshiya Murai
    Referral may be required
    Kyoto, JP 

    Toshiya Murai practices practicing medicine in Kyoto, Japan. Murai is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. They are also highly rated in 4 other conditions, according to our data. Their clinical expertise encompasses Schizophrenia, Autism Spectrum Disorder, Williams Syndrome, and Anorexia.

    Advanced in Williams Syndrome

    Yasuko Funabiki
    Advanced in Williams Syndrome

    Yasuko Funabiki
    Referral may be required
    Kyoto, JP 

    Yasuko Funabiki practices practicing medicine in Kyoto, Japan. Ms. Funabiki is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Williams Syndrome, Autism Spectrum Disorder, and Schizophrenia.

    Advanced in Williams Syndrome

    Takahiro Ikeda
    Advanced in Williams Syndrome

    Takahiro Ikeda
    Referral may be required
    Shimotsuke, JP 

    Takahiro Ikeda practices practicing medicine in Shimotsuke, Japan. Mr. Ikeda is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Williams Syndrome, Campomelic Dysplasia, Campomelia Cumming Type, and Autism Spectrum Disorder.

    Advanced in Williams Syndrome

    Masatoshi Nakata
    Advanced in Williams Syndrome

    Masatoshi Nakata
    Referral may be required
    Kyoto, JP 

    Masatoshi Nakata practices practicing medicine in Kyoto, Japan. Mr. Nakata is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Williams Syndrome, West Syndrome, Autism Spectrum Disorder, and Hemolysis.

    Advanced in Williams Syndrome

    Kanae Matsushima
    Advanced in Williams Syndrome

    Kanae Matsushima
    Referral may be required
    Hirakata, JP 

    Kanae Matsushima practices practicing medicine in Hirakata, Japan. Ms. Matsushima is rated as an Advanced expert by MediFind in the treatment of Williams Syndrome. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Williams Syndrome and Autism Spectrum Disorder.

    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 184

    Last Updated: 06/30/2026

    What is the definition of Williams Syndrome?

    Williams syndrome is a rare disorder that can lead to problems with development.

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

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

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    How does MediFind rank Williams 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 Williams 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 Williams 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 Williams Syndrome doctor search results page. 

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

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

    Look for the filter feature on the left-side of the Williams 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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