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    Last Updated: 10/30/2025

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    MediFind found 21 doctor with experience in IgG4-Related Disease near Ontario, CA. Of these, 20 are Experienced and 1 are Advanced.

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    21 providers found
      Advanced in IgG4-Related Disease

      Dr. Michael A. Seidman
      Advanced in IgG4-Related Disease

      Dr. Michael A. Seidman
      Toronto General Hospital, 200 Elizabeth St. 11e-421, 
      Toronto, ON, CA 
      416-340-3003
      Languages Spoken:
      English

      Michael Seidman practices in Toronto, Canada. Dr. Seidman is rated as an Advanced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Myocarditis, Polyarteritis Nodosa, IgG4-Related Disease, Heart Transplant, and Transcatheter Aortic Valve Replacement (TAVR).

      Experienced in IgG4-Related Disease

      Raymond P. Naden
      Experienced in IgG4-Related Disease

      Raymond P. Naden
      Hamilton, ON, CA 

      Raymond Naden practices in Hamilton, Canada. Mr. Naden is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Osteomyelitis, IgG4-Related Disease, Osteomyelitis in Children, and Systemic Lupus Erythematosus (SLE).

      What does Elite, Distinguished, Advanced, Experienced mean?
      Experienced in IgG4-Related Disease

      Ray P. Naden
      Experienced in IgG4-Related Disease

      Ray P. Naden
      Hamilton, ON, CA 

      Ray Naden practices in Hamilton, Canada. Mr. Naden is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Antiphospholipid Syndrome, Degos Disease, IgG4-Related Disease, and Mikulicz Disease.

      Learn about our expert tiers
      Experienced in IgG4-Related Disease

      Jason K. Lee
      Experienced in IgG4-Related Disease

      Jason K. Lee
      Toronto, ON, CA 

      Jason Lee practices in Toronto, Canada. Mr. Lee is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Papular Urticaria, IgG4-Related Disease, Asthma, and Nasal Polyps.

      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 in Toronto, Canada. Ms. Doria is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are 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
      200 Elizabeth St, 1st Fl, Canada M5G 24C, 
      Toronto, ON, CA 

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

      Experienced in IgG4-Related Disease

      Aaron Dou
      Experienced in IgG4-Related Disease

      Aaron Dou
      Toronto, ON, CA 

      Aaron Dou practices in Toronto, Canada. Mr. Dou is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Breast Cancer and IgG4-Related Disease.

      Experienced in IgG4-Related Disease

      Arthur M. Bookman
      Experienced in IgG4-Related Disease

      Arthur M. Bookman
      Toronto, ON, CA 

      Arthur Bookman practices in Toronto, Canada. Mr. Bookman is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Sjogren Syndrome, Dry Mouth, Dry Eye Syndrome, and Arthritis.

      Experienced in IgG4-Related Disease

      Jason K. Lee
      Experienced in IgG4-Related Disease

      Jason K. Lee
      Toronto, ON, CA 

      Jason Lee practices in Toronto, Canada. Mr. Lee is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Giant Papillary Conjunctivitis, Eosinophilic Asthma, Hives, and Asthma.

      Experienced in IgG4-Related Disease

      Korosh Khalili
      Experienced in IgG4-Related Disease

      Korosh Khalili
      Toronto, ON, CA 

      Korosh Khalili practices in Toronto, Canada. Khalili is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. Their top areas of expertise are 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 in Toronto, Canada. Mr. Hirschfield is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Primary Biliary Cholangitis, Sclerosing Cholangitis, Cholestasis, Liver Transplant, and Endoscopy.

      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 in London, Canada. Ms. Pope is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Rheumatoid Arthritis (RA), Scleroderma, Systemic Sclerosis (SSc), and Arthritis.

      Experienced in IgG4-Related Disease

      Armin Abadeh
      Experienced in IgG4-Related Disease

      Armin Abadeh
      Toronto, ON, CA 

      Armin Abadeh practices in Toronto, Canada. Mr. Abadeh is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are 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 in Hamilton, Canada. Ms. Kurowecki is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Orbital Pseudotumor, Retroperitoneal Fibrosis, Sialadenitis, and Dacryoadenitis.

      Experienced in IgG4-Related Disease

      Lina Chen
      Experienced in IgG4-Related Disease

      Lina Chen
      Hamilton, ON, CA 

      Lina Chen practices in Hamilton, Canada. Ms. Chen is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Neuralgia, Atopic Dermatitis, Asthma, Acute Pain, and Pancreaticoduodenectomy.

      Experienced in IgG4-Related Disease

      Marina Pourafkari
      Experienced in IgG4-Related Disease

      Marina Pourafkari
      Kingston, ON, CA 

      Marina Pourafkari practices in Kingston, Canada. Ms. Pourafkari is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are 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 in Toronto, Canada. Chetty is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. Their top areas of expertise are Colorectal Cancer, Appendix Cancer, Pancreatic Cancer, Sleeve Gastrectomy, and Endoscopy.

      Experienced in IgG4-Related Disease

      Sindhu R. Johnson
      Experienced in IgG4-Related Disease

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

      Sindhu Johnson practices in Toronto, Canada. Ms. Johnson is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Systemic Sclerosis (SSc), Scleroderma, Systemic Lupus Erythematosus (SLE), Interstitial Lung Disease, and Lung Transplant.

      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 in Hamilton, Canada. Mr. Patlas is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Toxic Megacolon, Sclerosing Mesenteritis, Acute Kidney Failure, Appendicitis, and Pancreatectomy.

      Experienced in IgG4-Related Disease

      Abdullah Alabousi
      Experienced in IgG4-Related Disease

      Abdullah Alabousi
      Hamilton, ON, CA 

      Abdullah Alabousi practices in Hamilton, Canada. Mr. Alabousi is rated as an Experienced expert by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Acute Kidney Failure, Orbital Pseudotumor, Retroperitoneal Fibrosis, Breast Cancer, 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.
      Showing 1-20 of 21

      Last Updated: 10/30/2025

      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:

      IgG4-Related Disease doctor near New York, NY
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      IgG4-Related Disease doctor near Philadelphia, PA
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      IgG4-Related Disease doctor near Dallas, TX
      IgG4-Related Disease doctor near San Jose, CA

      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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