The 20 Best Mast Cell Activation Syndrome (MCAS) Doctors Near Me in Florence, MA

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

Last Updated: 04/28/2026

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MediFind found 19 doctor with experience in Mast Cell Activation Syndrome (MCAS) near Florence, MA. Of these, 11 are Experienced, 6 are Advanced and 2 are Distinguished.

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19 providers found
    Distinguished in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology | Pediatrics | Internal Medicine
    Distinguished in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology | Pediatrics | Internal Medicine

    Allergy & Immunology Assoc Of New England (Northampton)

    269 Locust St, 
    Northampton, MA 
     (0.4 miles away)
    Experience:
    26+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jonathan Bayuk is an Internal Medicine specialist and a Pediatrics provider practicing medicine in Northampton, Massachusetts. He has been practicing medicine for over 26 years. Dr. Bayuk is rated as a Distinguished provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Allergic Rhinitis, Sinusitis, Grass Allergy, and Hives. Dr. Bayuk is board certified in American Board Of Allergy & Immunology , American Board Of Allergy And Immunology, Allergy & Immunology , and American Board Of Internal Medicine. Dr. Bayuk is currently accepting new patients.

    Distinguished in Mast Cell Activation Syndrome (MCAS)
    Nurse Practitioner
    Distinguished in Mast Cell Activation Syndrome (MCAS)
    Nurse Practitioner

    Office

    269 Locust St Ste 108, 
    Florence, MA 
     (0.4 miles away)
    Languages Spoken:
    English

    Erin Kolb is a Nurse Practitioner practicing medicine in Florence, Massachusetts. Ms. Kolb is rated as a Distinguished provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Mast Cell Activation Syndrome (MCAS).

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

    Northampton Integrative Medicine LLC

    395 Pleasant St, 
    Northampton, MA 
     (1.7 miles away)
    Languages Spoken:
    English

    Darren Lynch is a primary care provider, practicing in Family Medicine in Northampton, Massachusetts. Dr. Lynch is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 44 other conditions, according to our data. His clinical expertise encompasses Lyme Disease, Irritable Bowel Syndrome (IBS), Allergic Rhinitis, and Empyema.

    Learn about our expert tiers
    Advanced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology | Community Health Worker | Hospital Medicine
    Advanced in Mast Cell Activation Syndrome (MCAS)
    Allergy and Immunology | Community Health Worker | Hospital Medicine

    Allergy & Immunology Assoc Of New England (Northampton)

    269 Locust St, 
    Northampton, MA 
     (0.4 miles away)
    Experience:
    26+ years
    Languages Spoken:
    English
    Accepting New Patients

    Vanessa Van Stee is an Internal Medicine specialist and a Community Health Worker practicing medicine in Northampton, Massachusetts. She has been practicing medicine for over 26 years. Dr. Van Stee is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Allergic Rhinitis, X-Linked Agammaglobulinemia, Sinusitis, and Grass Allergy. Dr. Van Stee is board certified in American Board Of Allergy And Immunology, Allergy & Immunology and American Board Of Internal Medicine. Dr. Van Stee is currently accepting new patients.

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

    Urology Group Of Western NE, PC

    61 Locust St, 1st Fl, 
    Northampton, MA 
     (0.9 miles away)
    Experience:
    36+ years
    Languages Spoken:
    English
    Accepting New Patients

    Mohammad Mostafavi is a Urologist practicing medicine in Northampton, Massachusetts. He has been practicing medicine for over 36 years. Dr. Mostafavi is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 49 other conditions, according to our data. His clinical expertise encompasses Kidney Stones, Ochoa Syndrome, Perirenal Abscess, Ureteroscopy, and Prostatectomy. Dr. Mostafavi is board certified in American Board Of Urology. Dr. Mostafavi is currently accepting new patients.

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

    Northampton Integrative Medicine LLC

    395 Pleasant St, 
    Northampton, MA 
     (1.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Denise Kearney is an Allergy and Immunologist practicing medicine in Northampton, Massachusetts. Dr. Kearney is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 15 other conditions, according to our data. Her clinical expertise encompasses Omenn Syndrome, Allergic Rhinitis, IgG4-Related Disease, and MAGIC Syndrome.

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

    Northampton Integrative Medicine LLC

    395 Pleasant St, 
    Northampton, MA 
     (1.7 miles away)
    Languages Spoken:
    English

    Janice Pegels is a primary care provider, practicing in Family Medicine in Northampton, Massachusetts. Dr. Pegels is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 19 other conditions, according to our data. Her clinical expertise encompasses Hyperphenylalaninemia Due to Dehydratase Deficiency, Complement Component 2 Deficiency, Thiopurine S-Methyltransferase Deficiency, and Hereditary Angioedema.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Cardiology | Pediatrics
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Pediatric Cardiology | Pediatrics

    Mass General Pediatric Cardiology

    1754 Northampton St, 
    Holyoke, MA 
     (9.3 miles away)
    Experience:
    27+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Michael Willers is a Pediatrics specialist and a Pediatric Cardiologist practicing medicine in Holyoke, Massachusetts. He has been practicing medicine for over 27 years. Dr. Willers is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His clinical expertise encompasses Bicuspid Aortic Valve, Ventricular Septal Defects, Congenital Heart Disease (CHD), and Mast Cell Activation Syndrome (MCAS). Dr. Willers is board certified in American Board Of Pediatrics, Pediatric Cardiology. Dr. Willers is currently accepting new patients.

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

    Walgreens #11602

    70 Main St, 
    Florence, MA 
     (0.1 miles away)
    Experience:
    10+ years
    Languages Spoken:
    English
    Offers Telehealth

    Kristin Rivera is a primary care provider, practicing in Family Medicine in Florence, Massachusetts. She has been practicing medicine for over 10 years. Dr. Rivera is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her clinical expertise encompasses Mast Cell Activation Syndrome (MCAS), Neuronal Intranuclear Inclusion Disease (NIID), Small Lymphocytic Lymphoma (SLL), and Familial Hypertension.

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

    Transhealth Inc

    10 Main St, Suite 3, 
    Florence, MA 
     (0.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jennifer Nesteby is a Nurse Practitioner practicing medicine in Florence, Massachusetts. Ms. Nesteby is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her clinical expertise encompasses Mast Cell Activation Syndrome (MCAS), Seasonal Affective Disorder (SAD), and Vitamin D Deficiency. Ms. Nesteby is currently accepting new patients.

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

    Cooley Dickinson Hospital

    30 Locust St, 
    Northampton, MA 
     (0.9 miles away)
    Languages Spoken:
    English

    Cathleen O'connell is a Nurse Practitioner practicing medicine in Northampton, Massachusetts. Ms. O'connell is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her clinical expertise encompasses Mast Cell Activation Syndrome (MCAS).

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

    Allergy And Immunology Associates Of New England LLC

    269 Locust St Ste 201201, 
    Florence, MA 
     (1.7 miles away)
    Languages Spoken:
    English

    Kerri St George is a Physician Assistant practicing medicine in Florence, Massachusetts. Ms. St George is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Chinese Restaurant Syndrome, Chronic Spontaneous Urticaria (CSU), Mast Cell Activation Syndrome (MCAS), and Chronic Rhinosinusitis with Nasal Polyps (CRSwNP).

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

    Holyoke Medical Center Gastroenterology (Holyoke)

    11 Hospital Dr Fl 3, 
    Holyoke, MA 
     (8.7 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Tuyyab Hassan is a Gastroenterologist practicing medicine in Holyoke, Massachusetts. Dr. Hassan is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Nonalcoholic Steatohepatitis (NASH), Hepatitis C, Hepatitis, Colonoscopy, and Endoscopy.

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

    Atkinson Family Practice

    17 Research Dr, 
    Amherst, MA 
     (10.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Katherine Atkinson is a Family Medicine provider practicing medicine in Amherst, Massachusetts. Dr. Atkinson is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Opioid Use Disorder, Gingival Fibromatosis with Hypertrichosis, Vitamin D Deficiency, and Menopause.

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

    Atkinson Family Practice

    17 Research Dr, 
    Amherst, MA 
     (10.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Michele Spirko is a primary care provider, practicing in Family Medicine in Amherst, Massachusetts. Dr. Spirko is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 25 other conditions, according to our data. Her clinical expertise encompasses Hypermethioninemia, Sulfite Oxidase Deficiency, COVID-19, Multisystem Inflammatory Syndrome in Children (MIS-C), and Intrauterine Device Insertion.

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

    Office

    75 Springfield Rd Ste 1, 
    Westfield, MA 
     (13.6 miles away)
    Languages Spoken:
    English

    Akinyele Lovelace is an Internal Medicine provider practicing medicine in Westfield, Massachusetts. Dr. Lovelace is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His clinical expertise encompasses Seasonal Affective Disorder (SAD), Emphysema, Folliculitis, Vitamin B12 Deficiency, and Colonoscopy.

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

    Office

    75 Springfield Rd Ste 1, 
    Westfield, MA 
     (13.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Sarah Bashiruddin is a primary care provider, practicing in Internal Medicine in Westfield, Massachusetts. Dr. Bashiruddin is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 16 other conditions, according to our data. Her clinical expertise encompasses Hypothyroidism, Obesity in Children, High Cholesterol, and Obesity.

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

    Office

    75 Springfield Rd Ste 1, 
    Westfield, MA 
     (13.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Lance Reynolds is a primary care provider, practicing in Internal Medicine in Westfield, Massachusetts. Dr. Reynolds is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 29 other conditions, according to our data. His clinical expertise encompasses Lung Metastases, Gastrointestinal Bleeding, Type 2 Diabetes (T2D), and Pneumonia.

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

    Baystate Hematology Oncology

    3350 Main St, 
    Springfield, MA 
     (15.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Richard Steingart is a Hematologist practicing medicine in Springfield, Massachusetts. Dr. Steingart is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 73 other conditions, according to our data. His clinical expertise encompasses Follicular Lymphoma, Small Lymphocytic Lymphoma (SLL), Hairy Cell Leukemia (HCL), Reticuloendotheliosis, and Bone Marrow Aspiration.

    Showing 1-19 of 19

    Last Updated: 04/28/2026

    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 Florence, MA?

    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 Florence, MA?

    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 Florence, MA?

    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 Florence, MA?

    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 Florence, MA?

    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 Florence, MA?

    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 Florence, MA?

    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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