The 20 Best Mast Cell Activation Syndrome (MCAS) Doctors Near Me in Boulder, CO

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

Last Updated: 04/28/2026

Save doctors for later
Sign Up
Not sure about your diagnosis?
Check Your Symptoms
Already have a doctor?
Find A Second Opinion

MediFind found 17 doctor with experience in Mast Cell Activation Syndrome (MCAS) near Boulder, CO. Of these, 15 are Experienced and 2 are Advanced.

Location
LocationClose
17 providers found
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Rheumatology
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Rheumatology

    Boulder Medical Center

    2750 Broadway St, Rheumatology Dept, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Lori Maran is a Rheumatologist practicing medicine in Boulder, Colorado. Dr. Maran is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 18 other conditions, according to our data. Her clinical expertise encompasses Rhizomelic Pseudopolyarthritis, Polymyalgia Rheumatica, Postmenopausal Osteoporosis, and Osteoporosis. Dr. Maran is currently accepting new patients.

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

    Boulder Medical Center

    2750 Broadway St, Gastroenterology Dept, 
    Boulder, CO 
     (0.6 miles away)
    Experience:
    17+ years
    Languages Spoken:
    English
    Accepting New Patients

    Christie Blanton is a Gastroenterologist practicing medicine in Boulder, Colorado. She has been practicing medicine for over 17 years. Dr. Blanton is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Viral Gastroenteritis, Colitis, Familial Adenomatous Polyposis, Diarrhea, and Endoscopy. Dr. Blanton is board certified in Internal Medicine-American Board Of Internal Medicine (ABIM). Dr. Blanton is currently accepting new patients.

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

    Boulder Medical Center

    2750 Broadway St, Rheumatology Dept, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Stuart Weisman is a Rheumatologist practicing medicine in Boulder, Colorado. Dr. Weisman is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 25 other conditions, according to our data. His clinical expertise encompasses Rheumatoid Arthritis (RA), Ankylosing Spondylitis, Axial Spondyloarthritis (AxSpA), and Rheumatoid Lung Disease. Dr. Weisman is currently accepting new patients.

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

    Boulder Medical Center

    2750 Broadway St, Internal Medicine Dept, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Emma Mccarty is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. Dr. Mccarty is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 17 other conditions, according to our data. Her clinical expertise encompasses Sitosterolemia, Psoriatic Arthritis, Psoriasis, and Hypothyroidism. Dr. Mccarty 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

    Boulder Medical Center

    2750 Broadway St, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English

    Karen Andrews is an Allergy and Immunologist practicing medicine in Boulder, Colorado. Dr. Andrews is rated as an Advanced 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 Primary Immunodeficiency (PID), Sinusitis, Allergic Rhinitis, and Grass Allergy.

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

    Boulder Medical Center

    2750 Broadway St, Family Medicine, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Krista Toomre is a primary care provider, practicing in Family Medicine in Boulder, Colorado. Dr. Toomre is rated as an Experienced 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 Menopause, Vertigo, Hypertension, and Familial Hypertension.

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

    Boulder Medical Center

    2750 Broadway St, Gastroenterology Dept, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Elizabeth Helgans is a Physician Assistant practicing medicine in Boulder, Colorado. Ms. Helgans 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), Non-Alcoholic Fatty Liver Disease, Gallbladder Disease, and Nonalcoholic Steatohepatitis (NASH). Ms. Helgans is currently accepting new patients.

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

    Boulder Medical Center

    2750 Broadway St, 
    Boulder, CO 
     (0.6 miles away)
    Experience:
    18+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Fabiana Fernandez is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. She has been practicing medicine for over 18 years. Dr. Fernandez is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her clinical expertise encompasses Attention Deficit Hyperactivity Disorder (ADHD), Hypothyroidism, Obesity in Children, and Menopause. Dr. Fernandez is currently accepting new patients.

    Experienced in Mast Cell Activation Syndrome (MCAS)
    Nurse Practitioner
    Experienced in Mast Cell Activation Syndrome (MCAS)
    Nurse Practitioner
    2750 Broadway St, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Madeline Hoglund is a Nurse Practitioner practicing medicine in Boulder, Colorado. Ms. Hoglund is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her clinical expertise encompasses Aseptic and Alopecic Nodules of Scalp (AANS), Mast Cell Activation Syndrome (MCAS), and Chronic Spontaneous Urticaria (CSU). Ms. Hoglund is currently accepting new patients.

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

    Boulder Medical Center

    2750 Broadway St, Internal Medicine Dept, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Hilary Wallace is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. Dr. Wallace is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Hypothyroidism, Melorheostosis with Osteopoikilosis, Melorheostosis, and Osteopenia. Dr. Wallace is currently accepting new patients.

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

    Boulder Medical Center

    2750 Broadway St, Internal Medicine Dept, 
    Boulder, CO 
     (0.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Laura Erben is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. Dr. Erben is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Type 2 Diabetes (T2D), High Cholesterol, Hypothyroidism, and Vertigo. Dr. Erben is currently accepting new patients.

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

    Boulder Medical Center

    4745 Arapahoe Ave, Ste 200 - Family Med, 
    Boulder, CO 
     (2.1 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Rebecca Juliar is a primary care provider, practicing in Family Medicine in Boulder, Colorado. Dr. Juliar is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). Her clinical expertise encompasses Premenstrual Syndrome, Autosomal Recessive Hypotrichosis, Alopecia Areata, Musculocontractural Ehlers-Danlos Syndrome (mcEDS), and Intrauterine Device Insertion. Dr. Juliar is currently accepting new patients.

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

    Office

    2 Garden Ctr Ste 201, 
    Broomfield, CO 
     (12.2 miles away)
    Languages Spoken:
    English

    Michael Volz is an Internal Medicine provider practicing medicine in Broomfield, Colorado. Dr. Volz is rated as an Advanced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Bloom Syndrome, and Urticaria Pigmentosa.

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

    Veros Health

    1551 Professional Lane, Suite 170, 
    Longmont, CO 
     (12.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Edan Sarid is an Allergy and Immunologist practicing medicine in Longmont, Colorado. Dr. Sarid is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Hereditary Angioedema, and Hyperphenylalaninemia Due to Dehydratase Deficiency. Dr. Sarid is board certified in American Board Of Allergy And Immunology. Dr. Sarid is currently accepting new patients.

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

    Office

    275 Century Cir Ste 202, 
    Louisville, CO 
     (7.7 miles away)
    Languages Spoken:
    English

    Joshua Krembs is a Holistic Medicine provider practicing medicine in Louisville, Colorado. Mr. Krembs is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). His clinical expertise encompasses Muscle Spasms and Mast Cell Activation Syndrome (MCAS).

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

    Veros Health

    1551 Professional Lane, Suite 170, 
    Longmont, CO 
     (12.4 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Isaac Melamed is an Allergy and Immunologist practicing medicine in Longmont, Colorado. Dr. Melamed is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Primary Immunodeficiency (PID), Common Variable Immune Deficiency, Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus Infections, and Hereditary Angioedema. Dr. Melamed is board certified in American Board Of Allergy And Immunology. Dr. Melamed is currently accepting new patients.

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

    Northern Medical Associates

    1420 W Midway Blvd, 
    Broomfield, CO 
     (12.0 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Shannon Hill is a Family Medicine provider practicing medicine in Broomfield, Colorado. Dr. Hill is rated as an Experienced provider by MediFind in the treatment of Mast Cell Activation Syndrome (MCAS). She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Seasonal Affective Disorder (SAD), Muscle Spasms, Pelvic Floor Dysfunction, and Beryllium Disease. Dr. Hill is board certified in Family Medicine-American Osteopathic Board Of Family Physicians (AOA). Dr. Hill is currently accepting new patients.

    Showing 1-17 of 17

    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 Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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 Boulder, CO?

    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 

    Read more about our Content Policy

    More Mast Cell Activation Syndrome (MCAS) Doctors by city