The 20 Best Mast Cell Activation Syndrome (MCAS) Doctors Near Me in Orange, CA

Find the Top Mast Cell Activation Syndrome (MCAS) Experts and Specialists

The 20 Best Mast Cell Activation Syndrome (MCAS) Doctors near Orange, CA

Last Updated: 02/22/2026

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MediFind found 37 doctor with experience in Mast Cell Activation Syndrome (MCAS) near Orange, CA. Of these, 35 are Experienced and 2 are Advanced.

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37 providers found
    Advanced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    Advanced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Diane Nugent is a Pediatric Hematologist Oncology provider in Orange, California. Dr. Nugent is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Blood Clots, Hemophilia A, Immune Thrombocytopenic Purpura (ITP), and Sickle Cell Disease. Dr. Nugent is currently accepting new patients.

    Advanced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Gastroenterology
    Advanced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Gastroenterology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Ashish Chogle is a Pediatric Gastroenterologist in Orange, California. Dr. Chogle is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Irritable Bowel Syndrome (IBS), Hirschsprung Disease, PIK3CA-Related Overgrowth Spectrum, and Mast Cell Activation Syndrome (MCAS). Dr. Chogle is currently accepting new patients.

    Sharief K. Taraman
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Neurology | Pediatric Neurology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Neurology | Pediatric Neurology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Sharief Taraman is a Neurologist and a Pediatric Neurologist in Orange, California. Dr. Taraman is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Autism Spectrum Disorder, Concussion, Mast Cell Activation Syndrome (MCAS), and Rasmussen Encephalitis. Dr. Taraman is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Eric Won is a Pediatric Hematologist Oncology provider in Orange, California. Dr. Won is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Congenital Athymia, Hereditary Spherocytosis, Koolen De Vries Syndrome, and Aase Syndrome. Dr. Won is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Amit Soni is a Pediatric Hematologist Oncology provider in Orange, California. Dr. Soni is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Hemophilia A, Shwachman-Diamond Syndrome, Ataxia-Pancytopenia Syndrome, and Hemophilic Arthropathy. Dr. Soni is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Gastroenterology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Gastroenterology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Gregory Wong is a Pediatric Gastroenterologist in Orange, California. Dr. Wong is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Hirschsprung Disease, Wolf-Hirschhorn Syndrome, Neurogenic Bowel, and Bowel Incontinence. Dr. Wong is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Rheumatology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Rheumatology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Andrew Shulman is a Pediatric Rheumatologist in Orange, California. Dr. Shulman is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Juvenile Dermatomyositis, Juvenile Idiopathic Arthritis (JIA), Localized Scleroderma, and Dermatomyositis. Dr. Shulman is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Vanessa Salinas is a Pediatric Hematologist Oncology provider in Orange, California. Dr. Salinas is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Beta Thalassemia, Hemophilia A, Hemophilic Arthropathy, and Shwachman-Diamond Syndrome. Dr. Salinas is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Infectious Disease
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Infectious Disease
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Delma Nieves is a Pediatric Infectious Disease provider in Orange, California. Dr. Nieves is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Toxic Shock Syndrome, Kawasaki Disease, Congenital Syphilis, and Arachnoiditis. Dr. Nieves is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Hematology Oncology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Geetha Puthenveetil is a Pediatric Hematologist Oncology provider in Orange, California. Dr. Puthenveetil is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Alpha Thalassemia, Thalassemia, Hemolytic Anemia, and Beta Thalassemia. Dr. Puthenveetil is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Gastroenterology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Gastroenterology
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Bassam Younes is a Pediatric Gastroenterologist in Orange, California. Dr. Younes is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Celiac Disease, Encopresis, Koolen De Vries Syndrome, and Cri-Du-Chat Syndrome. Dr. Younes is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Infectious Disease
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Infectious Disease
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Negar Ashouri is a Pediatric Infectious Disease provider in Orange, California. Dr. Ashouri is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Kawasaki Disease, Congenital Syphilis, Pneumococcal Meningitis, and Infant Botulism. Dr. Ashouri is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Infectious Disease
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Infectious Disease
    1201 West La Veta Avenue, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Antonio Arrieta is a Pediatric Infectious Disease provider in Orange, California. Dr. Arrieta is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Congenital Syphilis, Toxic Shock Syndrome, Infant Botulism, and Kawasaki Disease. Dr. Arrieta is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Surgery
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Surgery

    CHOC Children's Specialists Cardiothoracic Surgery

    505 S Main St Ste 225, 
    Orange, CA 
     (0.9 miles away)
    Languages Spoken:
    English

    Mustafa Kabeer is a Pediatric Surgeon in Orange, California. Dr. Kabeer is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Pectus Excavatum, Retroperitoneal Inflammation, Appendicitis, Pectus Carinatum, and Splenectomy.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Neurology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Neurology
    505 South Main Street, Suite 350, 
    Orange, CA 
     (0.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    John Crawford is a Pediatric Neurologist in Orange, California. Dr. Crawford is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Gliomatosis Cerebri, Embryonal Tumor with Multilayered Rosettes, Seizures, and Neurofibromatosis. Dr. Crawford is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Allergy and Immunology
    725 West La Veta Avenue, Suite 100, 
    Orange, CA 
     (1.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Wan-yin Chan is a Pediatric Allergy and Immunologist in Orange, California. Dr. Chan is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are DiGeorge Syndrome, Allergic Rhinitis, Sinusitis, and Hives. Dr. Chan is currently accepting new patients.

    William G. Harris
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology

    Allergy Partners Of California

    1140 W La Veta Ave, 
    Orange, CA 
     (0.8 miles away)
    Experience:
    39+ years
    Languages Spoken:
    English

    William Harris is an Allergy and Immunologist in Orange, California. Dr. Harris has been practicing medicine for over 39 years and is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Hives, Sinusitis, Grass Allergy, and Allergic Rhinitis.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Experienced in Mast Cell Activation Syndrome (MCAS)

    Center For Inherited Bld Dsr

    1201 W La Veta Ave, 
    Orange, CA 
     (0.8 miles away)
    Experience:
    19+ years
    Languages Spoken:
    English

    Nina Hwang is a Pediatrics provider in Orange, California. Dr. Hwang has been practicing medicine for over 19 years and is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Ataxia-Pancytopenia Syndrome, Shwachman-Diamond Syndrome, Hemophilia A, and Fanconi Anemia.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Experienced in Mast Cell Activation Syndrome (MCAS)

    Office

    1201 W La Veta Ave, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English

    Jennifer Lusk is a Pediatrics provider in Orange, California. Dr. Lusk is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Cerebral Hypoxia, Early Infantile Epileptic Encephalopathy, Koolen De Vries Syndrome, and CHARGE Syndrome.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Experienced in Mast Cell Activation Syndrome (MCAS)

    CHOC Children's Hospital

    1201 W La Veta Ave, 
    Orange, CA 
     (0.8 miles away)
    Languages Spoken:
    English

    Britanny Winckler is a Pediatrics provider in Orange, California. Dr. Winckler is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Malnutrition, Cerebral Hypoxia, Hyperlysinemia, and Glutaric Acidemia Type 2.

    Showing 1-20 of 37

    Last Updated: 02/22/2026

    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 near Orange, CA?

    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 near Orange, CA?

    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 does MediFind rank Mast Cell Activation Syndrome (MCAS) doctors near Orange, CA?

    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 near Orange, CA?

    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 near Orange, CA?

    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 near Orange, CA?

    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 near Orange, CA?

    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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