The 20 Best Granulomatosis with Polyangiitis Doctors Near Me in Ontario, CA

Find the Top Granulomatosis with Polyangiitis Experts and Specialists

Last Updated: 06/30/2026

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MediFind found 37 doctor with experience in Granulomatosis with Polyangiitis near Ontario, CA. Of these, 31 are Experienced, 4 are Advanced, 1 are Distinguished and 1 are Elite.

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37 providers found
    Elite in Granulomatosis with Polyangiitis

    Nader A. Khalidi
    Elite in Granulomatosis with Polyangiitis

    Nader A. Khalidi
    Referral may be required
    St Joseph's Hospital, 
    Hamilton, ON, CA 

    Nader Khalidi practices practicing medicine in Hamilton, Canada. Mr. Khalidi is rated as an Elite expert by MediFind in the treatment of Granulomatosis with Polyangiitis. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Vasculitis, Granulomatosis with Polyangiitis, Giant Cell Arteritis (GCA), and Temporal Arteritis.

    Distinguished in Granulomatosis with Polyangiitis

    Jeremiah Hwee
    Distinguished in Granulomatosis with Polyangiitis

    Jeremiah Hwee
    Referral may be required
    155 College Street, 
    Toronto, ON, CA 

    Jeremiah Hwee practices practicing medicine in Toronto, Canada. Mr. Hwee is rated as a Distinguished expert by MediFind in the treatment of Granulomatosis with Polyangiitis. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Hypereosinophilic Syndrome, Granulomatosis with Polyangiitis, Vasculitis, and Interstitial Lung Disease.

    Advanced in Granulomatosis with Polyangiitis

    Pooneh Pordeli
    Advanced in Granulomatosis with Polyangiitis

    Pooneh Pordeli
    Referral may be required
    Mississauga, ON, CA 

    Pooneh Pordeli practices practicing medicine in Mississauga, Canada. Pordeli is rated as an Advanced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. They are also highly rated in 2 other conditions, according to our data. Their clinical expertise encompasses Microscopic Polyangiitis, Granulomatosis with Polyangiitis, Vasculitis, and Acute Interstitial Pneumonia.

    Learn about our expert tiers
    Advanced in Granulomatosis with Polyangiitis

    Rae S. Yeung
    Advanced in Granulomatosis with Polyangiitis

    Rae S. Yeung
    Referral may be required
    Toronto, ON, CA 

    Rae Yeung practices practicing medicine in Toronto, Canada. Ms. Yeung is rated as an Advanced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Kawasaki Disease, Juvenile Idiopathic Arthritis (JIA), Multisystem Inflammatory Syndrome in Children (MIS-C), and Vasculitis.

    Advanced in Granulomatosis with Polyangiitis

    Krishnan K. Nair-Parameswaran
    Advanced in Granulomatosis with Polyangiitis

    Krishnan K. Nair-Parameswaran
    Referral may be required
    St. Joseph's Hospital, 
    Hamilton, ON, CA 

    Krishnan Nair-Parameswaran practices practicing medicine in Hamilton, Canada. Mr. Nair-Parameswaran is rated as an Advanced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Eosinophilic Asthma, Asthma, Chronic Eosinophilic Pneumonia, and Eosinophilic Pneumonia.

    Advanced in Granulomatosis with Polyangiitis

    Manali Mukherjee
    Advanced in Granulomatosis with Polyangiitis

    Manali Mukherjee
    Referral may be required
    Hamilton, ON, CA 

    Manali Mukherjee practices practicing medicine in Hamilton, Canada. Ms. Mukherjee is rated as an Advanced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Eosinophilic Asthma, Asthma, Chronic Eosinophilic Pneumonia, and Eosinophilic Pneumonia.

    Experienced in Granulomatosis with Polyangiitis

    George Shaker
    Experienced in Granulomatosis with Polyangiitis

    George Shaker
    Referral may be required
    Waterloo, ON, CA 

    George Shaker practices practicing medicine in Waterloo, Canada. Mr. Shaker is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. His clinical expertise encompasses Granulomatosis with Polyangiitis.

    Experienced in Granulomatosis with Polyangiitis

    Mats L. Junek
    Experienced in Granulomatosis with Polyangiitis

    Mats L. Junek
    Referral may be required
    St Joseph's Hospital, 
    Hamilton, ON, CA 

    Mats Junek practices practicing medicine in Hamilton, Canada. Mr. Junek is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Vasculitis, Giant Cell Arteritis (GCA), Temporal Arteritis, and Juvenile Temporal Arteritis.

    Experienced in Granulomatosis with Polyangiitis

    Lillian J. Barra
    Experienced in Granulomatosis with Polyangiitis

    Lillian J. Barra
    Referral may be required

    St. Joseph's Health Care London

    London, ON, CA 

    Lillian Barra practices practicing medicine in London, Canada. Ms. Barra is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Vasculitis, Takayasu Arteritis, Rheumatoid Arthritis (RA), and Giant Cell Arteritis (GCA).

    Experienced in Granulomatosis with Polyangiitis

    Nataliya Milman
    Experienced in Granulomatosis with Polyangiitis

    Nataliya Milman
    Referral may be required
    Ottawa, ON, CA 

    Nataliya Milman practices practicing medicine in Ottawa, Canada. Ms. Milman is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Vasculitis, Giant Cell Arteritis (GCA), Temporal Arteritis, and Takayasu Arteritis.

    Experienced in Granulomatosis with Polyangiitis

    Edward A. Margolin
    Experienced in Granulomatosis with Polyangiitis

    Edward A. Margolin
    Referral may be required
    1 King's College Circle, 
    Toronto, ON, CA 

    Edward Margolin practices practicing medicine in Toronto, Canada. Mr. Margolin is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. He is also highly rated in 28 other conditions, according to our data. His clinical expertise encompasses Papilledema, Cavernous Sinus Thrombosis, Increased Intracranial Pressure, Stent Placement, and Salpingo-Oophorectomy.

    Experienced in Granulomatosis with Polyangiitis

    Pascal N. Tyrrell
    Experienced in Granulomatosis with Polyangiitis

    Pascal N. Tyrrell
    Referral may be required
    Toronto, ON, CA 

    Pascal Tyrrell practices practicing medicine in Toronto, Canada. Mr. Tyrrell is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Neonatal Onset Multisystem Inflammatory Disease, Muckle-Wells Syndrome, Familial Cold Autoinflammatory Syndrome, Vasculitis, and Thrombectomy.

    Experienced in Granulomatosis with Polyangiitis

    Natalie Pulenzas
    Experienced in Granulomatosis with Polyangiitis

    Natalie Pulenzas
    Referral may be required
    Mount Sinai Hospital, 
    Toronto, ON, CA 

    Natalie Pulenzas practices practicing medicine in Toronto, Canada. Ms. Pulenzas is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. Her clinical expertise encompasses Endometrial Stromal Sarcoma, Osteonecrosis, Breast Cancer, Bone Tumor, and Mastectomy.

    Experienced in Granulomatosis with Polyangiitis

    Sahil Koppikar
    Experienced in Granulomatosis with Polyangiitis

    Sahil Koppikar
    Referral may be required
    1 King's College Circle, 
    Toronto, ON, CA 

    Sahil Koppikar practices practicing medicine in Toronto, Canada. Mr. Koppikar is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Psoriatic Arthritis, Arthritis, Synovitis, and Psoriasis.

    Experienced in Granulomatosis with Polyangiitis

    Katherine Radford
    Experienced in Granulomatosis with Polyangiitis

    Katherine Radford
    Referral may be required
    St Joseph's Healthcare, 
    Hamilton, ON, CA 

    Katherine Radford practices practicing medicine in Hamilton, Canada. Ms. Radford is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Bronchitis, Eosinophilic Asthma, Asthma, and Chronic Eosinophilic Pneumonia.

    Experienced in Granulomatosis with Polyangiitis

    Ronald M. Laxer
    Experienced in Granulomatosis with Polyangiitis

    Ronald M. Laxer
    Referral may be required
    Toronto, ON, CA 

    Ronald Laxer practices practicing medicine in Toronto, Canada. Mr. Laxer is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. He is also highly rated in 25 other conditions, according to our data. His clinical expertise encompasses Localized Scleroderma, Chronic Recurrent Multifocal Osteomyelitis, Osteomyelitis in Children, Osteomyelitis, and Tissue Biopsy.

    Experienced in Granulomatosis with Polyangiitis

    Janet E. Pope
    Experienced in Granulomatosis with Polyangiitis

    Janet E. Pope
    Referral may be required
    268, Grosvenor St, 
    London, ON, CA 

    Janet Pope practices practicing medicine in London, Canada. Ms. Pope is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. She is also highly rated in 36 other conditions, according to our data. Her clinical expertise encompasses Rheumatoid Arthritis (RA), Scleroderma, Arthritis, and Systemic Sclerosis (SSc).

    Experienced in Granulomatosis with Polyangiitis

    Melanie Kjarsgaard
    Experienced in Granulomatosis with Polyangiitis

    Melanie Kjarsgaard
    Referral may be required
    St Joseph's Healthcare, 
    Hamilton, ON, CA 

    Melanie Kjarsgaard practices practicing medicine in Hamilton, Canada. Ms. Kjarsgaard is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Asthma, Eosinophilic Asthma, COVID-19, and Bronchitis.

    Experienced in Granulomatosis with Polyangiitis

    Diane Hebert
    Experienced in Granulomatosis with Polyangiitis

    Diane Hebert
    Referral may be required
    Toronto, ON, CA 

    Diane Hebert practices practicing medicine in Toronto, Canada. Ms. Hebert is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Nephrotic Syndrome, Vasculitis, Takayasu Arteritis, Cytomegalovirus Infection, and Kidney Transplant.

    Experienced in Granulomatosis with Polyangiitis

    Medha L. Soowamber
    Experienced in Granulomatosis with Polyangiitis

    Medha L. Soowamber
    Referral may be required
    Mount Sinai Hospital, 
    Toronto, ON, CA 

    Medha Soowamber practices practicing medicine in Toronto, Canada. Ms. Soowamber is rated as an Experienced expert by MediFind in the treatment of Granulomatosis with Polyangiitis. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Vasculitis, Giant Cell Arteritis (GCA), Temporal Arteritis, and Juvenile Temporal Arteritis.

    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 37

    Last Updated: 06/30/2026

    What is the definition of Granulomatosis with Polyangiitis?

    Granulomatosis with polyangiitis (GPA) is a rare disorder in which blood vessels become inflamed. This leads to damage in major organs of the body. It was formerly known as Wegener's granulomatosis.

    When should I see a Granulomatosis with Polyangiitis 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 a Granulomatosis with Polyangiitis 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 do I find the best Granulomatosis with Polyangiitis doctor in Ontario, CA?

    You can find a Granulomatosis with Polyangiitis doctor in any of the 10 largest U.S. cities by clicking below:

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    How does MediFind rank Granulomatosis with Polyangiitis 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 Granulomatosis with Polyangiitis 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 a Granulomatosis with Polyangiitis 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 Granulomatosis with Polyangiitis doctor search results page. 

    Why is it important to get a second opinion from a different Granulomatosis with Polyangiitis 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 Granulomatosis with Polyangiitis 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 Granulomatosis with Polyangiitis 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 Granulomatosis with Polyangiitis 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 Granulomatosis with Polyangiitis doctors in Ontario, CA?

    Look for the filter feature on the left side of the Granulomatosis with Polyangiitis 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 Granulomatosis with Polyangiitis doctor that offers video calls?

    Look for the filter feature on the left-side of the Granulomatosis with Polyangiitis 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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