The 20 Best RASopathies Doctors Near Me in Tokyo, 13

Find the Top RASopathies Experts and Specialists

Last Updated: 06/30/2026

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MediFind found 75 doctor with experience in RASopathies near Tokyo, 13. Of these, 68 are Experienced, 4 are Advanced and 3 are Distinguished.

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75 providers found
    Distinguished in RASopathies

    Reiko Horikawa
    Distinguished in RASopathies

    Reiko Horikawa
    Referral may be required
    Tokyo, JP 

    Reiko Horikawa practices practicing medicine in Tokyo, Japan. Ms. Horikawa is rated as a Distinguished expert by MediFind in the treatment of RASopathies. She is also highly rated in 30 other conditions, according to our data. Her clinical expertise encompasses Pediatric Growth Hormone Deficiency, Growth Hormone Deficiency (GHD), Small for Gestational Age, Hormone Replacement Therapy (HRT), and Liver Transplant.

    Distinguished in RASopathies

    Hiroshi Kawame
    Distinguished in RASopathies

    Hiroshi Kawame
    Referral may be required
    Tokyo, JP 

    Hiroshi Kawame practices practicing medicine in Tokyo, Japan. Mr. Kawame is rated as a Distinguished expert by MediFind in the treatment of RASopathies. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Costello Syndrome, RASopathies, Chromosome 6 Uniparental Disomy, and Noonan Syndrome.

    Distinguished in RASopathies

    Tsuyoshi Isojima
    Distinguished in RASopathies

    Tsuyoshi Isojima
    Referral may be required
    Toranomon, JP 

    Tsuyoshi Isojima practices practicing medicine in Toranomon, Japan. Mr. Isojima is rated as a Distinguished expert by MediFind in the treatment of RASopathies. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Nail-Patella Syndrome, Noonan Syndrome, Turner Syndrome, Caffey Disease, and Hormone Replacement Therapy (HRT).

    Are you looking for a specific type of RASopathies?

    Common conditions include: Cardiofaciocutaneous Syndrome, Cardiomyopathic Lentiginosis, Costello Syndrome, Legius Syndrome, Noonan Syndrome

    Learn about our expert tiers
    Advanced in RASopathies

    Kenjiro Kosaki
    Advanced in RASopathies

    Kenjiro Kosaki
    Referral may be required
    Tokyo, JP 

    Kenjiro Kosaki practices practicing medicine in Tokyo, Japan. Mr. Kosaki is rated as an Advanced expert by MediFind in the treatment of RASopathies. He is also highly rated in 75 other conditions, according to our data. His clinical expertise encompasses Feingold Syndrome, Increased Head Circumference, Hypotonia, Oophorectomy, and Salpingo-Oophorectomy.

    Advanced in RASopathies

    Keiji Nishijima
    Advanced in RASopathies

    Keiji Nishijima
    Referral may be required
    Tokyo, JP 

    Keiji Nishijima practices practicing medicine in Tokyo, Japan. Mr. Nishijima is rated as an Advanced expert by MediFind in the treatment of RASopathies. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Rommen Mueller Sybert Syndrome, Noonan Syndrome, RASopathies, and Short Stature (Growth Disorders).

    Advanced in RASopathies

    Tomonobu Hasegawa
    Advanced in RASopathies

    Tomonobu Hasegawa
    Referral may be required
    Tokyo, JP 

    Tomonobu Hasegawa practices practicing medicine in Tokyo, Japan. Hasegawa is rated as an Advanced expert by MediFind in the treatment of RASopathies. They are also highly rated in 62 other conditions, according to our data. Their clinical expertise encompasses Congenital Hypothyroidism, Panhypopituitarism, Hypothyroidism, Intersex, and Hormone Replacement Therapy (HRT).

    Advanced in RASopathies

    Toshio Nakanishi
    Advanced in RASopathies

    Toshio Nakanishi
    Referral may be required
    Tokyo, JP 

    Toshio Nakanishi practices practicing medicine in Tokyo, Japan. Mr. Nakanishi is rated as an Advanced expert by MediFind in the treatment of RASopathies. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Heterotaxy Syndrome, Congenital Heart Disease (CHD), Noonan Syndrome, Cardiac Ablation, and Stent Placement.

    Experienced in RASopathies

    Takashi Kohno
    Experienced in RASopathies

    Takashi Kohno
    Referral may be required
    Tokyo, JP 

    Takashi Kohno practices practicing medicine in Tokyo, Japan. Mr. Kohno is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Lung Adenocarcinoma, Lung Cancer, Heart Failure, Angioplasty, and Hysterectomy.

    Experienced in RASopathies

    Yoshimasa Ando
    Experienced in RASopathies

    Yoshimasa Ando
    Referral may be required
    Musashino, JP 

    Yoshimasa Ando practices practicing medicine in Musashino, Japan. Ando is rated as an Experienced expert by MediFind in the treatment of RASopathies. They are also highly rated in 2 other conditions, according to our data. Their clinical expertise encompasses Retinal Detachment, Sarcoidosis, Noonan Syndrome, RASopathies, and Vitrectomy.

    Experienced in RASopathies

    Hisato Suzuki
    Experienced in RASopathies

    Hisato Suzuki
    Referral may be required
    Tokyo, JP 

    Hisato Suzuki practices practicing medicine in Tokyo, Japan. Suzuki is rated as an Experienced expert by MediFind in the treatment of RASopathies. They are also highly rated in 20 other conditions, according to our data. Their clinical expertise encompasses Increased Head Circumference, Baller-Gerold Syndrome, Rapadilino Syndrome, Acromicric Dysplasia, and Gastrostomy.

    Experienced in RASopathies

    Mamiko Yamada
    Experienced in RASopathies

    Mamiko Yamada
    Referral may be required
    Tokyo, JP 

    Mamiko Yamada practices practicing medicine in Tokyo, Japan. Yamada is rated as an Experienced expert by MediFind in the treatment of RASopathies. They are also highly rated in 14 other conditions, according to our data. Their clinical expertise encompasses Oral-Facial-Digital Syndrome, Polysyndactyly Cardiac Malformation, Acromicric Dysplasia, Gastrostomy, and Salpingo-Oophorectomy.

    Experienced in RASopathies

    Hiroki Nagamine
    Experienced in RASopathies

    Hiroki Nagamine
    Referral may be required
    Tokyo, JP 

    Hiroki Nagamine practices practicing medicine in Tokyo, Japan. Mr. Nagamine is rated as an Experienced expert by MediFind in the treatment of RASopathies. His clinical expertise encompasses RASopathies, Osteonecrosis, Cardiofaciocutaneous Syndrome, and Double Aortic Arch.

    Experienced in RASopathies

    Kei Takasawa
    Experienced in RASopathies

    Kei Takasawa
    Referral may be required
    Tokyo, JP 

    Kei Takasawa practices practicing medicine in Tokyo, Japan. Takasawa is rated as an Experienced expert by MediFind in the treatment of RASopathies. They are also highly rated in 12 other conditions, according to our data. Their clinical expertise encompasses Congenital Adrenal Hyperplasia (CAH), Intersex, Chromosome 10q Deletion, Bone Marrow Transplant, and Hormone Replacement Therapy (HRT).

    Experienced in RASopathies

    Keiichi Fukuda
    Experienced in RASopathies

    Keiichi Fukuda
    Referral may be required
    Shinjuku, JP 

    Keiichi Fukuda practices practicing medicine in Shinjuku, Japan. Fukuda is rated as an Experienced expert by MediFind in the treatment of RASopathies. They are also highly rated in 37 other conditions, according to our data. Their clinical expertise encompasses Pulmonary Hypertension, Heart Failure, Hypertension, Angioplasty, and Percutaneous Coronary Intervention (PCI).

    Experienced in RASopathies

    Takashi Kawakami
    Experienced in RASopathies

    Takashi Kawakami
    Referral may be required
    Tokyo, JP 

    Takashi Kawakami practices practicing medicine in Tokyo, Japan. Mr. Kawakami is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Pulmonary Hypertension, Hypertension, Pulmonary Embolism, Angioplasty, and Cardiac Ablation.

    Experienced in RASopathies

    Takao Takahashi
    Experienced in RASopathies

    Takao Takahashi
    Referral may be required
    Tokyo, JP 

    Takao Takahashi practices practicing medicine in Tokyo, Japan. Mr. Takahashi is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses 3p Deletion Syndrome, Epicanthal Folds, Neurocutaneous Melanosis, Urinary Tract Infection in Children, and Mastectomy.

    Experienced in RASopathies

    Seien Ko
    Experienced in RASopathies

    Seien Ko
    Referral may be required
    Shinanomachi, JP 

    Seien Ko practices practicing medicine in Shinanomachi, Japan. Ko is rated as an Experienced expert by MediFind in the treatment of RASopathies. Their clinical expertise encompasses Pulmonary Valve Stenosis, Noonan Syndrome, Endocarditis, RASopathies, and Gastrostomy.

    Experienced in RASopathies

    Yoshiki Shionoya
    Experienced in RASopathies

    Yoshiki Shionoya
    Referral may be required
    Tokyo, JP 

    Yoshiki Shionoya practices practicing medicine in Tokyo, Japan. Mr. Shionoya is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Bidirectional Tachycardia, Cardiofaciocutaneous Syndrome, Hyaline Fibromatosis Syndrome, and Methemoglobinemia.

    Experienced in RASopathies

    Kazuki Yamazawa
    Experienced in RASopathies

    Kazuki Yamazawa
    Referral may be required
    Tokyo, JP 

    Kazuki Yamazawa practices practicing medicine in Tokyo, Japan. Mr. Yamazawa is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Russell-Silver Dwarfism, Chromosome 6 Uniparental Disomy, Mosaic Trisomy 7, and Chromosome 11 Uniparental Disomy.

    Experienced in RASopathies

    Kento Koda
    Experienced in RASopathies

    Kento Koda
    Referral may be required
    Department Of Otolaryngology And Head And Neck Surgery, Bunkyo Ku, 
    Tokyo, JP 

    Kento Koda practices practicing medicine in Tokyo, Japan. Mr. Koda is rated as an Experienced expert by MediFind in the treatment of RASopathies. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses MAGIC Syndrome, Actinomycosis, Meniere Disease, and Hearing Loss.

    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 75

    Last Updated: 06/30/2026

    What is the definition of RASopathies?

    RASopathies are a group of rare syndromes causes by mutations in the genes that make proteins for the Ras/MAPK cell signaling pathway. This pathway controls cell functions such as cell growth, cell maturation, and cell death. There are several types of RASopathy syndromes, including cardiofaciocutaneous syndrome, Costello syndrome, Legius syndrome, neurofibromatosis type 1, Noonan syndrome, and capillary malformation-arteriovenous malformation syndrome.

    When should I see a RASopathies doctor near Tokyo, 13?

    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 RASopathies doctor near Tokyo, 13?

    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 RASopathies doctor near Tokyo, 13?

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

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    How does MediFind rank RASopathies doctors near Tokyo, 13?

    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 RASopathies doctors near Tokyo, 13?

    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 RASopathies doctor near Tokyo, 13?

    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 RASopathies doctor search results page. 

    Why is it important to get a second opinion from a different RASopathies 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 RASopathies doctor near Tokyo, 13?

    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 RASopathies 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 RASopathies 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 RASopathies doctors near Tokyo, 13?

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

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