The 20 Best Asthma Doctors Near Me in Ontario, CA

Find the Top Asthma Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 370 doctor with experience in Asthma near Ontario, CA. Of these, 300 are Experienced, 48 are Advanced, 16 are Distinguished and 6 are Elite.

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370 providers found
    Paul M. O'byrne
    Elite in Asthma
    Elite in Asthma
    St. Joseph's Hospital, 
    Hamilton, ON, CA 

    Paul O'byrne practices in Hamilton, Canada. Mr. O'byrne is rated as an Elite expert by MediFind in the treatment of Asthma. His top areas of expertise are Asthma, Chronic Cough, Eosinophilic Pneumonia, and Simple Pulmonary Eosinophilia.

    Elite in Asthma
    Elite in Asthma
    St. Joseph's Hospital, 
    Hamilton, ON, CA 

    Gail Gauvreau practices in Hamilton, Canada. Gauvreau is rated as an Elite expert by MediFind in the treatment of Asthma. Their top areas of expertise are Asthma, Eosinophilic Asthma, Eosinophilic Pneumonia, and Simple Pulmonary Eosinophilia.

    Elite in Asthma
    St. Joseph's Hospital, 
    Hamilton, ON, CA 

    Krishnan Nair-Parameswaran practices in Hamilton, Canada. Mr. Nair-Parameswaran is rated as an Elite expert by MediFind in the treatment of Asthma. His top areas of expertise are Eosinophilic Asthma, Asthma, Chronic Eosinophilic Pneumonia, and Eosinophilic Pneumonia.

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    Elite in Asthma
    Elite in Asthma
    Kingston, ON, CA 

    Muna Lougheed practices in Kingston, Canada. Ms. Lougheed is rated as an Elite expert by MediFind in the treatment of Asthma. Her top areas of expertise are Asthma, Empyema, Chronic Obstructive Pulmonary Disease (COPD), Colonoscopy, and Endoscopy.

    Elite in Asthma
    Elite in Asthma
    Hamilton, ON, CA 

    Manali Mukherjee practices in Hamilton, Canada. Ms. Mukherjee is rated as an Elite expert by MediFind in the treatment of Asthma. Her top areas of expertise are Eosinophilic Asthma, Asthma, Chronic Eosinophilic Pneumonia, and Eosinophilic Pneumonia.

    Elite in Asthma
    Elite in Asthma
    555 University Avenue, 
    Toronto, ON, CA 

    Padmaja Subbarao practices in Toronto, Canada. Ms. Subbarao is rated as an Elite expert by MediFind in the treatment of Asthma. Her top areas of expertise are Stridor, Asthma, Asthma in Children, and Cystic Fibrosis.

    Shawn D. Aaron
    Distinguished in Asthma
    Distinguished in Asthma
    501 Smyth Road, K1H 8 M5, 
    Ottawa, ON, CA 

    Shawn Aaron practices in Ottawa, Canada. Mr. Aaron is rated as a Distinguished expert by MediFind in the treatment of Asthma. His top areas of expertise are Chronic Obstructive Pulmonary Disease (COPD), Asthma, Cystic Fibrosis, Pulmonary Embolism, and Lung Transplant.

    Imran Satia
    Distinguished in Asthma
    Distinguished in Asthma
    St. Joseph's Hospital, 
    Hamilton, ON, CA 

    Imran Satia practices in Hamilton, Canada. Mr. Satia is rated as a Distinguished expert by MediFind in the treatment of Asthma. His top areas of expertise are Chronic Cough, Asthma, Mounier-Kuhn Syndrome, and Chronic Obstructive Pulmonary Disease (COPD).

    Distinguished in Asthma
    Distinguished in Asthma
    St. Joseph's Healthcare Hamilton, 
    Hamilton, ON, CA 

    Sarah Svenningsen practices in Hamilton, Canada. Ms. Svenningsen is rated as a Distinguished expert by MediFind in the treatment of Asthma. Her top areas of expertise are Asthma, Long Haul COVID, COVID-19, and Chronic Obstructive Pulmonary Disease (COPD).

    Distinguished in Asthma
    Distinguished in Asthma
    Toronto, ON, CA 

    Susan Tarlo practices in Toronto, Canada. Ms. Tarlo is rated as a Distinguished expert by MediFind in the treatment of Asthma. Her top areas of expertise are Occupational Asthma, Asthma, Hypersensitivity Pneumonitis, and Asbestosis.

    Distinguished in Asthma
    Distinguished in Asthma
    St. Joseph's Hospital, 
    Hamilton, ON, CA 

    Roma Sehmi practices in Hamilton, Canada. Ms. Sehmi is rated as a Distinguished expert by MediFind in the treatment of Asthma. Her top areas of expertise are Asthma, Eosinophilic Pneumonia, Simple Pulmonary Eosinophilia, and Chronic Eosinophilic Pneumonia.

    Distinguished in Asthma
    Distinguished in Asthma
    555 University Avenue, 
    Toronto, ON, CA 

    Theo Moraes practices in Toronto, Canada. Moraes is rated as a Distinguished expert by MediFind in the treatment of Asthma. Their top areas of expertise are Asthma, Stridor, Asthma in Children, and Cystic Fibrosis.

    Distinguished in Asthma
    Distinguished in Asthma
    2075 Bayview Avenue, 
    Toronto, ON, CA 

    Andrea Gershon practices in Toronto, Canada. Ms. Gershon is rated as a Distinguished expert by MediFind in the treatment of Asthma. Her top areas of expertise are Chronic Obstructive Pulmonary Disease (COPD), Asthma, Interstitial Lung Disease, Tissue Biopsy, and Lung Transplant.

    Distinguished in Asthma
    Distinguished in Asthma
    ON, CA 

    Jingqin Zhu practices in Canada. Zhu is rated as a Distinguished expert by MediFind in the treatment of Asthma. Their top areas of expertise are Asthma, Asthma in Children, COVID-19, and Atopic Dermatitis.

    Distinguished in Asthma
    Distinguished in Asthma
    Ottawa, ON, CA 

    William Yang practices in Ottawa, Canada. Mr. Yang is rated as a Distinguished expert by MediFind in the treatment of Asthma. His top areas of expertise are Angioedema, Hereditary Angioedema, Hives, and Asthma.

    Distinguished in Asthma
    Distinguished in Asthma
    London, ON, CA 

    Christopher Licskai practices in London, Canada. Mr. Licskai is rated as a Distinguished expert by MediFind in the treatment of Asthma. His top areas of expertise are Asthma, Chronic Obstructive Pulmonary Disease (COPD), Simple Pulmonary Eosinophilia, and Chronic Eosinophilic Pneumonia.

    Distinguished in Asthma
    Distinguished in Asthma
    Hamilton, ON, CA 

    Katherine Radford practices in Hamilton, Canada. Ms. Radford is rated as a Distinguished expert by MediFind in the treatment of Asthma. Her top areas of expertise are Eosinophilic Asthma, Bronchitis, Asthma, and Eosinophilic Pneumonia.

    Distinguished in Asthma
    Distinguished in Asthma
    Kingston, ON, CA 

    Anne Ellis practices in Kingston, Canada. Ms. Ellis is rated as a Distinguished expert by MediFind in the treatment of Asthma. Her top areas of expertise are Allergic Rhinitis, Grass Allergy, Anaphylaxis, and Giant Papillary Conjunctivitis.

    Distinguished in Asthma
    Distinguished in Asthma
    Hamilton, ON, CA 

    Derek Chu practices in Hamilton, Canada. Mr. Chu is rated as a Distinguished expert by MediFind in the treatment of Asthma. His top areas of expertise are Anaphylaxis, Asthma, Allergic Rhinitis, and Atopic Dermatitis.

    Distinguished in Asthma
    Distinguished in Asthma
    Hamilton, ON, CA 

    Susan Waserman practices in Hamilton, Canada. Ms. Waserman is rated as a Distinguished expert by MediFind in the treatment of Asthma. Her top areas of expertise are Anaphylaxis, Allergic Rhinitis, Asthma, and Hives.

    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 370

    Last Updated: 04/28/2026

    What is the definition of Asthma?

    Asthma is a chronic disease that causes the airways of the lungs to swell and become narrow. It leads to breathing difficulty such as wheezing, shortness of breath, chest tightness, and coughing.

    When should I see an Asthma doctor in Ontario, 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 an Asthma doctor in Ontario, 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 Asthma doctors in Ontario, 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 Asthma doctors in Ontario, 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 an Asthma doctor in Ontario, 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 Asthma doctor search results page. 

    Why is it important to get a second opinion from a different Asthma 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 an Asthma doctor in Ontario, 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 Asthma 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 Asthma 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 Asthma doctors in Ontario, CA?

    Look for the filter feature on the left side of the Asthma 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 an Asthma doctor that offers video calls?

    Look for the filter feature on the left-side of the Asthma 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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