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    Last Updated: 01/09/2026

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    MediFind found 37 doctor with experience in Mast Cell Activation Syndrome (MCAS) near Japan. Of these, 37 are Experienced.

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    37 providers found
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Yoshimichi Okayama
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Yoshimichi Okayama
      Takasaki, JP 

      Yoshimichi Okayama practices in Takasaki, Japan. Okayama is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Their top areas of expertise are Chronic Spontaneous Urticaria (CSU), Hives, Vernal Keratoconjunctivitis, and Asthma.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Yuko Nakano
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Yuko Nakano
      Hongo, JP 

      Yuko Nakano practices in Hongo, Japan. Ms. Nakano is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Mast Cell Activation Syndrome (MCAS) and Plasmacytoma.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Yoshiyuki Yamada
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Yoshiyuki Yamada
      Isehara, JP 

      Yoshiyuki Yamada practices in Isehara, Japan. Mr. Yamada is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Eosinophilic Enteropathy, Eosinophilic Colitis, Proctitis, Small Bowel Resection, and Endoscopy.

      Learn about our expert tiers
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Tatsuki R. Kataoka
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Tatsuki R. Kataoka
      Shiwa Gun, JP 

      Tatsuki Kataoka practices in Shiwa Gun, Japan. Mr. Kataoka is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Breast Cancer, RUNX1 Familial Platelet Disorder, Langerhans Cell Histiocytosis, and Angiosarcoma.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Masato Kobayashi
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Masato Kobayashi
      Sapporo, JP 

      Masato Kobayashi practices in Sapporo, Japan. Mr. Kobayashi is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Gastrointestinal Stromal Tumor, Mast Cell Activation Syndrome (MCAS), Reticulohistiocytoma, and Histiocytosis.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Ai Yamada
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Ai Yamada
      Miyazaki, JP 

      Ai Yamada practices in Miyazaki, Japan. Ms. Yamada is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Mosaic Variegated Aneuploidy Syndrome, Ganglioneuroblastoma, Ganglioneuroma, and Embryonal Tumor with Multilayered Rosettes.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Daisuke Sawa
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Daisuke Sawa
      Miyazaki, JP 

      Daisuke Sawa practices in Miyazaki, Japan. Mr. Sawa is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Systemic Mastocytosis, Mast Cell Activation Syndrome (MCAS), Acute Myeloid Leukemia (AML), and Leukemia.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      James K. Chambers
      Experienced in Mast Cell Activation Syndrome (MCAS)

      James K. Chambers
      Tokyo, JP 

      James Chambers practices in Tokyo, Japan. Mr. Chambers is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Reticulohistiocytoma, Histiocytosis, Enlarged Liver, and Oligodendroglioma.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Takao Fujisawa
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Takao Fujisawa
      Department Of Head And Neck Medical Oncology, 
      Kashiwa, JP 

      Takao Fujisawa practices in Kashiwa, Japan. Mr. Fujisawa is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Head and Neck Squamous Cell Carcinoma (HNSCC), Asthma, Grass Allergy, and Anaphylaxis.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Makoto Bonkobara
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Makoto Bonkobara
      Musashino, JP 

      Makoto Bonkobara practices in Musashino, Japan. Mr. Bonkobara is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Reticulohistiocytoma, Histiocytosis, Adult Soft Tissue Sarcoma, and Gastrointestinal Stromal Tumor.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Ruby Pawankar
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Ruby Pawankar
      Tokyo, JP 

      Ruby Pawankar practices in Tokyo, Japan. Ms. Pawankar is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Allergic Rhinitis, Asthma, Papular Urticaria, and Anaphylaxis.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Hayato Miyachi
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Hayato Miyachi
      Bunka, JP 

      Hayato Miyachi practices in Bunka, Japan. Mr. Miyachi is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Acute Myeloid Leukemia (AML), Leukemia, Acute Promyelocytic Leukemia, and Childhood Acute Myeloid Leukemia.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Sachiyo Kamimura
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Sachiyo Kamimura
      Miyazaki, JP 

      Sachiyo Kamimura practices in Miyazaki, Japan. Ms. Kamimura is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Ganglioneuroma, Ganglioneuroblastoma, Hemophagocytic Lymphohistiocytosis, and Systemic Mastocytosis.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Kazuyuki Uchida
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Kazuyuki Uchida
      Tokyo, JP 

      Kazuyuki Uchida practices in Tokyo, Japan. Mr. Uchida is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Oligodendroglioma, Reticulohistiocytoma, Histiocytosis, Thrombectomy, and Tissue Biopsy.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Mariko Kinoshita
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Mariko Kinoshita
      Miyazaki, JP 

      Mariko Kinoshita practices in Miyazaki, Japan. Ms. Kinoshita is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Ganglioneuroma, Ganglioneuroblastoma, Systemic Mastocytosis, Mast Cell Activation Syndrome (MCAS), and Bone Marrow Transplant.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Yusuke Saito
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Yusuke Saito
      Sapporo, JP 

      Yusuke Saito practices in Sapporo, Japan. Mr. Saito is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Leukemia, Acute Myeloid Leukemia (AML), Systemic Mastocytosis, and Very Long-Chain Acyl-CoA Dehydrogenase (VLCAD) Deficiency.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Masao Yamaguchi
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Masao Yamaguchi
      Chiba, JP 

      Masao Yamaguchi practices in Chiba, Japan. Mr. Yamaguchi is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Coronary Heart Disease, Anaphylaxis, Stable Angina, Percutaneous Coronary Intervention (PCI), and Stent Placement.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Hiroshi Moritake
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Hiroshi Moritake
      Miyazaki, JP 

      Hiroshi Moritake practices in Miyazaki, Japan. Mr. Moritake is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Clear Cell Sarcoma, Leukemia, Childhood Acute Myeloid Leukemia, Acute Myeloid Leukemia (AML), and Bone Marrow Transplant.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Mizuho Nagao
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Mizuho Nagao
      Tsu, JP 

      Mizuho Nagao practices in Tsu, Japan. Nagao is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Their top areas of expertise are Asthma, Food Allergy, Atopic Dermatitis, and Anaphylaxis.

      Experienced in Mast Cell Activation Syndrome (MCAS)

      Masahiro Morimoto
      Experienced in Mast Cell Activation Syndrome (MCAS)

      Masahiro Morimoto
      Yamaguchi, JP 

      Masahiro Morimoto practices in Yamaguchi, Japan. Mr. Morimoto is rated as an Experienced expert by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Angiostrongyliasis, Secernentea Infections, Severe Fever with Thrombocytopenia Syndrome, and Mast Cell Activation Syndrome (MCAS).

      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 37

      Last Updated: 01/09/2026

      What is the definition of Mast Cell Activation Syndrome (MCAS)?

      Mast cell activation syndrome (MCAS) causes a person to have repeated severe allergy symptoms affecting several body systems. In MCAS, mast cells mistakenly release too many chemical agents, resulting in symptoms in the skin, gastrointestinal tract, heart, respiratory, and neurologic systems. Mast cells are present throughout most of our bodies and secrete different chemicals during allergic reactions. Symptoms include episodes of abdominal pain, cramping, diarrhea, flushing, itching, wheezing, coughing, lightheadedness and rapid pulse and low blood pressure. Symptoms can start at any age, but usually begin in adulthood. The cause of MCAS is unknown. Diagnosis is based on the symptoms, clinical exam, and specific laboratory testing. Other conditions may need to be excluded before MCAS can be diagnosed.

      When should I see a Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) doctor in Japan?

      You can find a Mast Cell Activation Syndrome (MCAS) doctor in any of the 10 largest U.S. cities by clicking below:

      Mast Cell Activation Syndrome (MCAS) doctor near New York, NY
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      Mast Cell Activation Syndrome (MCAS) doctor near Houston, TX
      Mast Cell Activation Syndrome (MCAS) doctor near Phoenix, AZ
      Mast Cell Activation Syndrome (MCAS) doctor near Philadelphia, PA
      Mast Cell Activation Syndrome (MCAS) doctor near Atlanta, GA
      Mast Cell Activation Syndrome (MCAS) doctor near Boston, MA
      Mast Cell Activation Syndrome (MCAS) doctor near Dallas, TX
      Mast Cell Activation Syndrome (MCAS) doctor near San Jose, CA

      How does MediFind rank Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) doctor search results page. 

      Why is it important to get a second opinion from a different Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) doctors in Japan?

      Look for the filter feature on the left side of the Mast Cell Activation Syndrome (MCAS) 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 Mast Cell Activation Syndrome (MCAS) doctor that offers video calls?

      Look for the filter feature on the left-side of the Mast Cell Activation Syndrome (MCAS) 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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