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    Last Updated: 10/30/2025

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    MediFind found 65 doctor with experience in Histiocytosis near Ontario, CA. Of these, 58 are Experienced, 4 are Advanced, 2 are Distinguished and 1 are Elite.

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    65 providers found
      Elite in Histiocytosis

      Oussama A. Abla
      Elite in Histiocytosis

      Oussama A. Abla
      555 University Avenue, 
      Toronto, ON, CA 

      Oussama Abla practices in Toronto, Canada. Mr. Abla is rated as an Elite expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Langerhans Cell Histiocytosis, Reticulohistiocytoma, Histiocytosis, and Rosai-Dorfman Disease.

      Distinguished in Histiocytosis

      Sheila Weitzman
      Distinguished in Histiocytosis

      Sheila Weitzman
      Toronto, ON, CA 

      Sheila Weitzman practices in Toronto, Canada. Ms. Weitzman is rated as a Distinguished expert by MediFind in the treatment of Histiocytosis. Her top areas of expertise are Histiocytosis, Reticulohistiocytoma, Hemophagocytic Lymphohistiocytosis, Bone Marrow Aspiration, and Bone Marrow Transplant.

      What does Elite, Distinguished, Advanced, Experienced mean?
      Distinguished in Histiocytosis

      James A. Whitlock
      Distinguished in Histiocytosis

      James A. Whitlock
      Toronto, ON, CA 

      James Whitlock practices in Toronto, Canada. Mr. Whitlock is rated as a Distinguished expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Langerhans Cell Histiocytosis, Acute Lymphoblastic Leukemia (ALL), Reticulohistiocytoma, and Histiocytosis.

      Learn about our expert tiers
      Advanced in Histiocytosis

      Rudolph M. Egeler
      Advanced in Histiocytosis

      Rudolph M. Egeler
      Toronto, ON, CA 

      Rudolph Egeler practices in Toronto, Canada. Mr. Egeler is rated as an Advanced expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Langerhans Cell Histiocytosis, Histiocytosis, Reticulohistiocytoma, ADULT Syndrome, and Bone Marrow Transplant.

      Advanced in Histiocytosis

      Ahmed Naqvi
      Advanced in Histiocytosis

      Ahmed Naqvi
      Toronto, ON, CA 

      Ahmed Naqvi practices in Toronto, Canada. Mr. Naqvi is rated as an Advanced expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Hemophagocytic Lymphohistiocytosis, Non-Langerhans-Cell Histiocytosis, Reticulohistiocytoma, Histiocytosis, and Bone Marrow Transplant.

      Advanced in Histiocytosis

      Tal Schechter
      Advanced in Histiocytosis

      Tal Schechter
      555 University Avenue, 
      Toronto, ON, CA 

      Tal Schechter practices in Toronto, Canada. Mr. Schechter is rated as an Advanced expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Graft Versus Host Disease (GvHD), Hemophagocytic Lymphohistiocytosis, Non-Langerhans-Cell Histiocytosis, Bronchiolitis Obliterans, and Bone Marrow Transplant.

      Advanced in Histiocytosis

      Joerg A. Krueger
      Advanced in Histiocytosis

      Joerg A. Krueger
      Toronto, ON, CA 

      Joerg Krueger practices in Toronto, Canada. Krueger is rated as an Advanced expert by MediFind in the treatment of Histiocytosis. Their top areas of expertise are Acute Lymphoblastic Leukemia (ALL), Hemophagocytic Lymphohistiocytosis, Osteopetrosis, Non-Langerhans-Cell Histiocytosis, and Bone Marrow Transplant.

      Damien Roux
      Experienced in Histiocytosis

      Damien Roux
      Experienced in Histiocytosis

      Damien Roux
      401 Smyth Rd, 
      Ottawa, ON, CA 

      Damien Roux practices in Ottawa, Canada. Mr. Roux is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Pneumonia, Acute Respiratory Distress Syndrome (ARDS), Petrositis, and Spontaneous Bacterial Peritonitis.

      John T. Granton
      Experienced in Histiocytosis

      John T. Granton
      Experienced in Histiocytosis

      John T. Granton
      Rm 18-365, 600 University Avenue, 
      Toronto, ON, CA 

      John Granton practices in Toronto, Canada. Mr. Granton is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Pulmonary Hypertension, Hypertension, Pulmonary Embolism, Lung Transplant, and Heart Transplant.

      Experienced in Histiocytosis

      Salah S. Ali
      Experienced in Histiocytosis

      Salah S. Ali
      Kingston, ON, CA 

      Salah Ali practices in Kingston, Canada. Mr. Ali is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Hemophagocytic Lymphohistiocytosis, Chronic Graft Versus Host Disease (cGvHD), Non-Langerhans-Cell Histiocytosis, Histiocytosis, and Bone Marrow Transplant.

      Experienced in Histiocytosis

      Steven Erwood
      Experienced in Histiocytosis

      Steven Erwood
      Toronto, ON, CA 

      Steven Erwood practices in Toronto, Canada. Mr. Erwood is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Niemann-Pick Disease, Non-Langerhans-Cell Histiocytosis, Histiocytosis, and Reticulohistiocytoma.

      Experienced in Histiocytosis

      Earl D. Silverman
      Experienced in Histiocytosis

      Earl D. Silverman
      Toronto, ON, CA 

      Earl Silverman practices in Toronto, Canada. Mr. Silverman is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Systemic Lupus Erythematosus (SLE), Congenital Heart Block, Lupus Nephritis, and Heart Block.

      Experienced in Histiocytosis

      Zhaodong Xu
      Experienced in Histiocytosis

      Zhaodong Xu
      501 Smyth Road, K1H 8L6, 
      Ottawa, ON, CA 

      Zhaodong Xu practices in Ottawa, Canada. Xu is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. Their top areas of expertise are Chromosome 7p Deletion, Myelodysplastic Syndrome (MDS), Systemic Mastocytosis, and Leukemia.

      Experienced in Histiocytosis

      Danyal Ladha
      Experienced in Histiocytosis

      Danyal Ladha
      Ottawa, ON, CA 

      Danyal Ladha practices in Ottawa, Canada. Ladha is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. Their top areas of expertise are Heart Murmurs, Hemophagocytic Lymphohistiocytosis, Non-Langerhans-Cell Histiocytosis, and Histiocytosis.

      Experienced in Histiocytosis

      Linda T. Hiraki
      Experienced in Histiocytosis

      Linda T. Hiraki
      Toronto, ON, CA 

      Linda Hiraki practices in Toronto, Canada. Ms. Hiraki is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. Her top areas of expertise are Systemic Lupus Erythematosus (SLE), Lupus Nephritis, Glomerulonephritis, and Arthritis.

      Experienced in Histiocytosis

      Melissa C. Misztal
      Experienced in Histiocytosis

      Melissa C. Misztal
      Toronto, ON, CA 

      Melissa Misztal practices in Toronto, Canada. Ms. Misztal is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. Her top areas of expertise are Hemophagocytic Lymphohistiocytosis, Non-Langerhans-Cell Histiocytosis, Systemic Lupus Erythematosus (SLE), and Histiocytosis.

      Experienced in Histiocytosis

      Lawrence K. Ng
      Experienced in Histiocytosis

      Lawrence K. Ng
      Toronto, ON, CA 

      Lawrence Ng practices in Toronto, Canada. Mr. Ng is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. His top areas of expertise are Systemic Lupus Erythematosus (SLE), Hemophagocytic Lymphohistiocytosis, Non-Langerhans-Cell Histiocytosis, and Osteonecrosis.

      Experienced in Histiocytosis

      Rae S. Yeung
      Experienced in Histiocytosis

      Rae S. Yeung
      Toronto, ON, CA 

      Rae Yeung practices in Toronto, Canada. Ms. Yeung is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. Her top areas of expertise are Kawasaki Disease, Juvenile Idiopathic Arthritis (JIA), Multisystem Inflammatory Syndrome in Children (MIS-C), and Vasculitis.

      Experienced in Histiocytosis

      Andrea S. Doria
      Experienced in Histiocytosis

      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 Histiocytosis. Her top areas of expertise are Systemic Lupus Erythematosus (SLE), Lupus Nephritis, Glomerulonephritis, Appendectomy, and Kidney Transplant.

      Experienced in Histiocytosis

      Evgueni A. Ivakine
      Experienced in Histiocytosis

      Evgueni A. Ivakine
      Toronto, ON, CA 

      Evgueni Ivakine practices in Toronto, Canada. Ivakine is rated as an Experienced expert by MediFind in the treatment of Histiocytosis. Their top areas of expertise are Becker Muscular Dystrophy, Duchenne Muscular Dystrophy, Congenital Muscular Dystrophy Type 1A, and Niemann-Pick Disease.

      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 65

      Last Updated: 10/30/2025

      What is the definition of Histiocytosis?

      Histiocytosis is a general name for a group of disorders or "syndromes" that involve an abnormal increase in the number of specialized white blood cells that are called histiocytes.

      Recently, new knowledge about this family of diseases has led experts to develop a new classification. Five categories have been proposed:

      • L group -- includes Langerhans cell histiocytosis and Erdheim-Chester disease
      • C group -- includes non-Langerhans cell histiocytosis that involves the skin
      • M group -- includes malignant histiocytosis
      • R group -- includes Rosai-Dorfman disease
      • H Group -- includes hemophagocytic lymphohistiocytosis

      This article focuses only on the L group, which includes Langerhans cell histiocytosis and Erdheim-Chester disease.

      When should I see a Histiocytosis 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 Histiocytosis 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 Histiocytosis doctor in Ontario, CA?

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

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      How does MediFind rank Histiocytosis 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 Histiocytosis 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 Histiocytosis 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 Histiocytosis doctor search results page. 

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

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

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