The 20 Best Mast Cell Activation Syndrome (MCAS) Doctors Near Me in Missouri, US

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

The 20 Best Mast Cell Activation Syndrome (MCAS) Doctors in Missouri, US

Last Updated: 02/22/2026

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MediFind found 35 doctor with experience in Mast Cell Activation Syndrome (MCAS) near Missouri, US. Of these, 31 are Experienced, 3 are Advanced and 1 are Elite.

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35 providers found
    Elite in Mast Cell Activation Syndrome (MCAS)
    Gastroenterology
    Elite in Mast Cell Activation Syndrome (MCAS)
    Gastroenterology

    Specialist In Gastroenterology

    11525 Olde Cabin Rd, 
    Saint Louis, MO 
    Languages Spoken:
    English
    Offers Telehealth

    Leonard Weinstock is a Gastroenterologist in Saint Louis, Missouri. Dr. Weinstock is rated as an Elite provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Mast Cell Activation Syndrome (MCAS), Small Bowel Bacterial Overgrowth, Irritable Bowel Syndrome (IBS), Endoscopy, and Colonoscopy.

    Advanced in Mast Cell Activation Syndrome (MCAS)
    Hematology
    Advanced in Mast Cell Activation Syndrome (MCAS)
    Hematology

    Washington University

    660 S Euclid Ave, 
    Saint Louis, MO 
    Languages Spoken:
    English

    Stephen Oh is a Hematologist in Saint Louis, Missouri. Dr. Oh is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Myelofibrosis, Myeloproliferative Neoplasms (MPN), Polycythemia Vera, Pancreaticoduodenectomy, and Bone Marrow Transplant.

    Advanced in Mast Cell Activation Syndrome (MCAS)
    Internal Medicine
    Advanced in Mast Cell Activation Syndrome (MCAS)
    Internal Medicine

    Office

    1110 Highlands Plaza Dr E Ste 300, 
    Saint Louis, MO 
    Languages Spoken:
    English
    Offers Telehealth

    Jennifer Monroy is an Internal Medicine provider in Saint Louis, Missouri. Dr. Monroy is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Hives, and Grass Allergy.

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

    Mercy Infusion Therapy-Joplin

    3001 Mc Clelland Blvd, 
    Joplin, MO 
    Languages Spoken:
    English

    David Croy is a Hematologist in Joplin, Missouri. Dr. Croy is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Small Cell Lung Cancer (SCLC), Lung Cancer, Pleuropulmonary Blastoma, Paget Disease of the Breast, and Bone Marrow Aspiration.

    Laurence Kinsella
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Internal Medicine | Neurology | Neuromusculoskeletal Medicine
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Internal Medicine | Neurology | Neuromusculoskeletal Medicine

    SSM Health Neurosciences

    1055 Bowles Ave., 
    Fenton, MO 
    Languages Spoken:
    English
    Offers Telehealth

    Dr. Kinsella is board certified in internal medicine, neurology, neuromuscular medicine, electromyography and autonomic disorders. He is listed among the Best Doctors in the US since 2005. He was awarded Teacher of the Year from the US Psychiatric Congress in 2009. He is a Fellow of the American Academy of Neurology. He is a native St. Louisan who completed an internal medicine residency at St. John's Mercy in St. Louis, a neurology residency at Brown University in Providence, Rhode Island, and a neuromuscular/EMG fellowship at Columbia University in New York. He is co-director of neurology for SSM Health Neuroscience Institute. Dr. Kinsella has special interest in neuromuscular disorders, EMG and autonomic disorders. His office is located on the SSM Health St. Clare Hospital - Fenton campus. Dr. Kinsella is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Migraine, Orthostatic Hypotension, Parkinson's Disease, and Congenital Mirror Movement Disorder.

    Selina A. Gierer
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Allergy and Immunology

    Englewood Center

    101 Northwest Englewood Road, Suite 130, 
    Gladstone, MO 
    Experience:
    21+ years
    Languages Spoken:
    English, Spanish
    Accepting New Patients
    Offers Telehealth

    Selina Gierer is a Pediatric Allergy and Immunologist in Gladstone, Missouri. Dr. Gierer has been practicing medicine for over 21 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 Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Anaphylaxis, and Hives. Dr. Gierer is currently accepting new patients.

    Travis Sifers
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology

    Kansas City Physician Partners Inc.

    4440 Broadway Blvd, 
    Kansas City, MO 
    Languages Spoken:
    English

    Travis Sifers is an Allergy and Immunologist in Kansas City, Missouri. Dr. Sifers is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Common Variable Immune Deficiency, Hives, Primary Immunodeficiency (PID), and Angioedema.

    Hamsa Subramanian
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology

    Signature Allergy & Immunology

    425 N New Ballas Rd, 
    Saint Louis, MO 
    Languages Spoken:
    English
    Offers Telehealth

    Hamsa Subramanian is an Allergy and Immunologist in Saint Louis, Missouri. Dr. Subramanian is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Hives, Common Variable Immune Deficiency, Angioedema, and Allergic Rhinitis.

    Zachary Jacobs
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology

    Kansas City Physician Partners Inc.

    4440 Broadway Blvd, 
    Kansas City, MO 
    Languages Spoken:
    English

    Zachary Jacobs is an Allergy and Immunologist in Kansas City, Missouri. Dr. Jacobs is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Primary Immunodeficiency (PID), Common Variable Immune Deficiency, Selective Deficiency of IgA, and Allergic Rhinitis.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology

    Grove Professional Pharmacy Inc

    1001 E Primrose St, 
    Springfield, MO 
    Languages Spoken:
    English

    Minh-thu Le is an Allergy and Immunologist in Springfield, Missouri. Dr. Le is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Allergic Rhinitis, Common Variable Immune Deficiency, Sinusitis, and Grass Allergy.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology

    Office

    10 Barnes West Dr Ste 200, 
    Saint Louis, MO 
    Languages Spoken:
    English

    H Wedner is an Allergy and Immunologist in Saint Louis, Missouri. Dr. Wedner is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Bloom Syndrome, and Urticaria Pigmentosa.

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

    The Orthopedic Center Of St. Louis

    10 Barnes West Dr Ste 200, 
    Creve Coeur, MO 
    Languages Spoken:
    English

    Charles Crecelius is a primary care provider, practicing in Geriatrics in Creve Coeur, Missouri. Dr. Crecelius is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Crohn's Disease, End-Stage Renal Disease (ESRD), Pneumonia, Colonoscopy, and Hip Replacement.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology

    Grove Professional Pharmacy Inc

    1001 E Primrose St, 
    Springfield, MO 
    Languages Spoken:
    English

    William Micka is an Allergy and Immunologist in Springfield, Missouri. Dr. Micka is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Allergic Rhinitis, and Sinusitis.

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

    St. Louis Children's Hospital

    1 Childrens Pl, 
    Saint Louis, MO 
    Languages Spoken:
    English

    Caroline Horner is a Pediatrics provider in Saint Louis, Missouri. Dr. Horner is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Anaphylaxis, Mast Cell Activation Syndrome (MCAS), and Nasal Polyps.

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

    St. Luke's Family Physicians - Westglen

    225 Clarkson Rd, 
    Ellisville, MO 
    Languages Spoken:
    English
    Offers Telehealth

    Barbara O'brien is a primary care provider, practicing in Family Medicine in Ellisville, Missouri. Dr. O'brien is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Familial Hypertension, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Diabetic Nephropathy.

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

    VAMC St. Louis MO

    915 N Grand Blvd, 
    Saint Louis, MO 
    Languages Spoken:
    English

    Elaine Hutchison is a primary care provider, practicing in Internal Medicine in Saint Louis, Missouri. Dr. Hutchison is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Epidermal Nevus, Ganglioglioma, Sciatica, and Mast Cell Activation Syndrome (MCAS).

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

    Brian D Dieterle MD PC

    670 Branson Landing Blvd Ste 2, 
    Branson, MO 
    Languages Spoken:
    English

    Brian Dieterle is a primary care provider, practicing in Internal Medicine in Branson, Missouri. Dr. Dieterle is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Mononucleosis, Thin Basement Membrane Nephropathy, Sitosterolemia, and Giardia Infection.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology

    The Orthopedic Center Of St. Louis

    10 Barnes West Dr Ste 200, 
    Creve Coeur, MO 
    Languages Spoken:
    English

    Maya Jerath is an Allergy and Immunologist in Creve Coeur, Missouri. Dr. Jerath is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Hives, Angioedema, Alpha-gal Syndrome (AGS), and Common Variable Immune Deficiency.

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

    Specialist In Gastroenterology

    11525 Olde Cabin Rd, 
    Saint Louis, MO 
    Languages Spoken:
    English

    Aman Singh is a Gastroenterologist in Saint Louis, Missouri. Dr. Singh is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her top areas of expertise are Angiodysplasia of the Colon, Heartburn, Familial Adenomatous Polyposis, Endoscopy, and Gastrectomy.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    General Surgery
    Experienced in Mast Cell Activation Syndrome (MCAS)
    General Surgery
    555 N New Ballas Rd, Div Surg Accs, Ste 265, 
    Saint Louis, MO 
    Languages Spoken:
    English
    Accepting New Patients

    Jeffrey Zuke is a General Surgeon in Saint Louis, Missouri. Dr. Zuke is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His top areas of expertise are Hernia, Gallstones, Choledocholithiasis, Hernia Surgery, and Gastrectomy. Dr. Zuke is currently accepting new patients.

    Showing 1-20 of 35

    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 in Missouri, US?

    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 Missouri, US?

    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 in Missouri, US?

    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 Missouri, US?

    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 Missouri, US?

    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 Missouri, US?

    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 Missouri, US?

    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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