The 20 Best IgG4-Related Disease Doctors Near Me in Ontario, CA

Find the Top IgG4-Related Disease Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 20 doctor with experience in IgG4-Related Disease near Ontario, CA. Of these, 19 are Experienced and 1 are Advanced.

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20 providers found
    Advanced in IgG4-Related Disease

    Rachel S. Simpson
    Advanced in IgG4-Related Disease

    Rachel S. Simpson
    London, ON, CA 

    Rachel Simpson practices practicing medicine in London, Canada. Ms. Simpson is rated as an Advanced expert by MediFind in the treatment of IgG4-Related Disease. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses IgG4-Related Disease, Retroperitoneal Fibrosis, Giant Papillary Conjunctivitis, and Vernal Keratoconjunctivitis.

    Experienced in IgG4-Related Disease

    Raymond P. Naden
    Experienced in IgG4-Related Disease

    Raymond P. Naden
    Hamilton, ON, CA 

    Raymond Naden practices practicing medicine in Hamilton, Canada. Mr. Naden is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Osteomyelitis, IgG4-Related Disease, Osteomyelitis in Children, and Systemic Lupus Erythematosus (SLE).

    Experienced in IgG4-Related Disease

    Ray P. Naden
    Experienced in IgG4-Related Disease

    Ray P. Naden
    Hamilton, ON, CA 

    Ray Naden practices practicing medicine in Hamilton, Canada. Mr. Naden is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Antiphospholipid Syndrome, IgG4-Related Disease, Mikulicz Disease, and Retroperitoneal Fibrosis.

    Learn about our expert tiers
    Experienced in IgG4-Related Disease

    Andrea S. Doria
    Experienced in IgG4-Related Disease

    Andrea S. Doria
    555 University Avenue, 
    Toronto, ON, CA 

    Andrea Doria practices practicing medicine in Toronto, Canada. Ms. Doria is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. She is also highly rated in 41 other conditions, according to our data. Her clinical expertise encompasses Systemic Lupus Erythematosus (SLE), Lupus Nephritis, Glomerulonephritis, Appendectomy, and Kidney Transplant.

    Experienced in IgG4-Related Disease

    Khaled Y. Elbanna
    Experienced in IgG4-Related Disease

    Khaled Y. Elbanna
    Toronto, ON, CA 

    Khaled Elbanna practices practicing medicine in Toronto, Canada. Mr. Elbanna is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His clinical expertise encompasses Gangrene, IgG4-Related Disease, Liver Cancer, and Renal Cell Carcinoma (RCC).

    Experienced in IgG4-Related Disease

    Arthur M. Bookman
    Experienced in IgG4-Related Disease

    Arthur M. Bookman
    Toronto, ON, CA 

    Arthur Bookman practices practicing medicine in Toronto, Canada. Mr. Bookman is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Sjogren Syndrome, Dry Mouth, Dry Eye Syndrome, and Rheumatoid Arthritis (RA).

    Experienced in IgG4-Related Disease

    Alana C. Brown
    Experienced in IgG4-Related Disease

    Alana C. Brown
    Toronto, ON, CA 

    Alana Brown practices practicing medicine in Toronto, Canada. Ms. Brown is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Menopause, HIV/AIDS, Hepatitis C, Salpingo-Oophorectomy, and Oophorectomy.

    Experienced in IgG4-Related Disease

    Janet E. Pope
    Experienced in IgG4-Related Disease

    Janet E. Pope
    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 IgG4-Related Disease. 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 IgG4-Related Disease

    Korosh Khalili
    Experienced in IgG4-Related Disease

    Korosh Khalili
    Toronto, ON, CA 

    Korosh Khalili practices practicing medicine in Toronto, Canada. Khalili is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. They are also highly rated in 3 other conditions, according to our data. Their clinical expertise encompasses Autosomal Dominant Polycystic Kidney Disease, Polycystic Kidney Disease, Liver Cancer, Liver Transplant, and Kidney Transplant.

    Experienced in IgG4-Related Disease

    Gideon M. Hirschfield
    Experienced in IgG4-Related Disease

    Gideon M. Hirschfield
    Toronto, ON, CA 

    Gideon Hirschfield practices practicing medicine in Toronto, Canada. Mr. Hirschfield is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Primary Biliary Cholangitis, Sclerosing Cholangitis, Cholestasis, Liver Transplant, and Hepato-Pancreato-Biliary Surgery.

    Experienced in IgG4-Related Disease

    Armin Abadeh
    Experienced in IgG4-Related Disease

    Armin Abadeh
    Toronto, ON, CA 

    Armin Abadeh practices practicing medicine in Toronto, Canada. Mr. Abadeh is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Chronic Spontaneous Urticaria (CSU), Hives, Li-Fraumeni Syndrome, and IgG4-Related Disease.

    Experienced in IgG4-Related Disease

    Darya Kurowecki
    Experienced in IgG4-Related Disease

    Darya Kurowecki
    St. Joseph's Healthcare Hamilton, 
    Hamilton, ON, CA 

    Darya Kurowecki practices practicing medicine in Hamilton, Canada. Ms. Kurowecki is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. Her clinical expertise encompasses Orbital Pseudotumor, Retroperitoneal Fibrosis, Sialadenitis, and Dacryoadenitis.

    Experienced in IgG4-Related Disease

    Sindhu R. Johnson
    Experienced in IgG4-Related Disease

    Sindhu R. Johnson
    Mount Sinai, 
    Toronto, ON, CA 

    Sindhu Johnson practices practicing medicine in Toronto, Canada. Ms. Johnson is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. She is also highly rated in 16 other conditions, according to our data. Her clinical expertise encompasses Systemic Sclerosis (SSc), Scleroderma, Systemic Lupus Erythematosus (SLE), Acute Interstitial Pneumonia, and Lung Transplant.

    Experienced in IgG4-Related Disease

    Lina Chen
    Experienced in IgG4-Related Disease

    Lina Chen
    Toronto, ON, CA 

    Lina Chen practices practicing medicine in Toronto, Canada. Ms. Chen is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Neuralgia, Atopic Dermatitis, Acute Pain, Mevalonate Kinase Deficiency, and Pancreaticoduodenectomy.

    Experienced in IgG4-Related Disease

    Marina Pourafkari
    Experienced in IgG4-Related Disease

    Marina Pourafkari
    Kingston, ON, CA 

    Marina Pourafkari practices practicing medicine in Kingston, Canada. Ms. Pourafkari is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Autosomal Dominant Polycystic Kidney Disease, Polycystic Kidney Disease, IgG4-Related Disease, and Chronic Obstructive Pulmonary Disease (COPD).

    Experienced in IgG4-Related Disease

    Runjan Chetty
    Experienced in IgG4-Related Disease

    Runjan Chetty
    Toronto, ON, CA 

    Runjan Chetty practices practicing medicine in Toronto, Canada. Chetty is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. They are also highly rated in 2 other conditions, according to our data. Their clinical expertise encompasses Colorectal Cancer, Appendix Cancer, Pancreatic Cancer, Sleeve Gastrectomy, and Endoscopy.

    Experienced in IgG4-Related Disease

    Ehsan A. Haider
    Experienced in IgG4-Related Disease

    Ehsan A. Haider
    Hamilton, ON, CA 

    Ehsan Haider practices practicing medicine in Hamilton, Canada. Mr. Haider is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Acute Interstitial Pneumonia, Interstitial Lung Disease, Hypersensitivity Pneumonitis, and Pneumonia.

    Experienced in IgG4-Related Disease

    Abdullah Alabousi
    Experienced in IgG4-Related Disease

    Abdullah Alabousi
    711 Concession St, 
    Hamilton, ON, CA 

    Abdullah Alabousi practices practicing medicine in Hamilton, Canada. Mr. Alabousi is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His clinical expertise encompasses Acute Kidney Failure, Orbital Pseudotumor, Retroperitoneal Fibrosis, Breast Cancer, and Pancreatectomy.

    Experienced in IgG4-Related Disease

    Aaron Dou
    Experienced in IgG4-Related Disease

    Aaron Dou
    Ottawa, ON, CA 

    Aaron Dou practices practicing medicine in Ottawa, Canada. Mr. Dou is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His clinical expertise encompasses Breast Cancer and IgG4-Related Disease.

    Experienced in IgG4-Related Disease

    Michael N. Patlas
    Experienced in IgG4-Related Disease

    Michael N. Patlas
    237 Barton Street, 
    Hamilton, ON, CA 

    Michael Patlas practices practicing medicine in Hamilton, Canada. Mr. Patlas is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His clinical expertise encompasses Toxic Megacolon, Sclerosing Mesenteritis, Acute Kidney Failure, Appendicitis, and Pancreatectomy.

    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.
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    Last Updated: 04/28/2026

    What is the definition of IgG4-Related Disease?

    IgG4-related disease (IgG4-RD) is an autoimmune disorder in which patients have elevated blood levels of IgG4, the most common form of immunoglobulin that circulates in the blood. Increased levels of IgG4 can cause inflammation in a single organ or in multiple organs, such as the meninges (tissue surrounding brain and spinal cord), the eye sockets, lacrimal (tear duct) glands, salivary glands, thyroid gland, lungs, aorta, kidneys, bladder, pancreas, and bile ducts. IgG4-related disease most often affects middle-aged and elderly males, and rarely, children.

    When should I see an IgG4-Related Disease 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 IgG4-Related Disease 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 IgG4-Related Disease doctor in Ontario, CA?

    You can find an IgG4-Related Disease doctor in any of the 10 largest U.S. cities by clicking below:

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    How does MediFind rank IgG4-Related Disease 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 IgG4-Related Disease 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 IgG4-Related Disease 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 IgG4-Related Disease doctor search results page. 

    Why is it important to get a second opinion from a different IgG4-Related Disease 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 IgG4-Related Disease 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 IgG4-Related Disease 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 IgG4-Related Disease 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 IgG4-Related Disease doctors in Ontario, CA?

    Look for the filter feature on the left side of the IgG4-Related Disease 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 IgG4-Related Disease doctor that offers video calls?

    Look for the filter feature on the left-side of the IgG4-Related Disease 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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