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    Last Updated: 01/09/2026

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    MediFind found 19 doctor with experience in Vitamin B12 Deficiency near Ontario, CA. Of these, 18 are Experienced and 1 are Distinguished.

    Location
    LocationClose
    19 providers found
      Distinguished in Vitamin B12 Deficiency

      Nafisa M. Jadavji
      Distinguished in Vitamin B12 Deficiency

      Nafisa M. Jadavji
      1125 Colonel By Drive, 
      Ottawa, ON, CA 

      Nafisa Jadavji practices in Ottawa, Canada. Ms. Jadavji is rated as a Distinguished expert by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Homocystinuria due to MTHFR Deficiency, Folate Deficiency, Vitamin B12 Deficiency, and Homocystinuria.

      Michael G. Surette
      Experienced in Vitamin B12 Deficiency

      Michael G. Surette
      Experienced in Vitamin B12 Deficiency

      Michael G. Surette
      Hamilton, ON, CA 

      Michael Surette practices in Hamilton, Canada. Mr. Surette is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Cystic Fibrosis, Pseudomonas Stutzeri Infections, Colitis, Generalized Anxiety Disorder (GAD), and Colonoscopy.

      Philip M. Sherman
      Experienced in Vitamin B12 Deficiency

      Philip M. Sherman
      Experienced in Vitamin B12 Deficiency

      Philip M. Sherman
      Toronto, ON, CA 

      Philip Sherman practices in Toronto, Canada. Mr. Sherman is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Necrotizing Enterocolitis, Viral Gastroenteritis, Necrosis, and Vitamin D Deficiency.

      Learn about our expert tiers
      Matthew C. Cheung
      Experienced in Vitamin B12 Deficiency

      Dr. Matthew C. Cheung
      Experienced in Vitamin B12 Deficiency

      Dr. Matthew C. Cheung
      40 Ruskin St., Attn : Matthew Cheung, 
      Ottawa, ON, CA 
      613-696-7000
      Languages Spoken:
      English

      Matthew Cheung practices in Ottawa, Canada. Dr. Cheung is rated as an Experienced provider by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Diffuse Large B-Cell Lymphoma (DLBCL), Non-Hodgkin Lymphoma, B-Cell Lymphoma, Tissue Biopsy, and Bone Marrow Transplant.

      Experienced in Vitamin B12 Deficiency

      William K. Silverstein
      Experienced in Vitamin B12 Deficiency

      William K. Silverstein
      Toronto, ON, CA 

      William Silverstein practices in Toronto, Canada. Mr. Silverstein is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Vitamin B12 Deficiency, Osteoporosis, Vitamin B12 Deficiency Anemia, and Secondary Peritonitis.

      Experienced in Vitamin B12 Deficiency

      Osama Y. Dirbashi-Al
      Experienced in Vitamin B12 Deficiency

      Osama Y. Dirbashi-Al
      415 Smyth Road, 
      Ottawa, ON, CA 

      Osama Dirbashi-Al practices in Ottawa, Canada. Mr. Dirbashi-Al is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Biotinidase Deficiency, Multiple Carboxylase Deficiency, Schindler Disease, Vitamin B12 Deficiency Anemia, and Sleeve Gastrectomy.

      Experienced in Vitamin B12 Deficiency

      Janet Madill
      Experienced in Vitamin B12 Deficiency

      Janet Madill
      1285 Western Road, 
      London, ON, CA 

      Janet Madill practices in London, Canada. Ms. Madill is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Small for Gestational Age, Malnutrition, Vitamin B12 Deficiency, and Acute Interstitial Pneumonia.

      Experienced in Vitamin B12 Deficiency

      Romy Cho
      Experienced in Vitamin B12 Deficiency

      Romy Cho
      Toronto, ON, CA 

      Romy Cho practices in Toronto, Canada. Cho is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. Their top areas of expertise are Vitamin B12 Deficiency, Tonsillitis, Vitamin B12 Deficiency Anemia, and Patent Foramen Ovale.

      Experienced in Vitamin B12 Deficiency

      Norine C. Foley
      Experienced in Vitamin B12 Deficiency

      Norine C. Foley
      St Joseph's Health Care London, 
      London, ON, CA 

      Norine Foley practices in London, Canada. Ms. Foley is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Transient Ischemic Attack (TIA), Stroke, Spasticity, Thrombectomy, and Hemorrhoidectomy.

      Experienced in Vitamin B12 Deficiency

      Rachael G. Horne
      Experienced in Vitamin B12 Deficiency

      Rachael G. Horne
      Toronto, ON, CA 

      Rachael Horne practices in Toronto, Canada. Ms. Horne is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Necrotizing Enterocolitis, Vitamin B12 Deficiency, Viral Gastroenteritis, and Necrosis.

      Experienced in Vitamin B12 Deficiency

      Steven R. Botts
      Experienced in Vitamin B12 Deficiency

      Steven R. Botts
      Toronto, ON, CA 

      Steven Botts practices in Toronto, Canada. Mr. Botts is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Necrotizing Enterocolitis, Necrosis, Atherosclerosis, and Thoracic Aortic Aneurysm.

      Experienced in Vitamin B12 Deficiency

      Siraj Mithoowani
      Experienced in Vitamin B12 Deficiency

      Siraj Mithoowani
      Hamilton, ON, CA 

      Siraj Mithoowani practices in Hamilton, Canada. Mr. Mithoowani is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Asymptomatic Bacteriuria, Immune Thrombocytopenic Purpura (ITP), Purpura, Familial Benign Copper Deficiency, and Fasciotomy.

      Experienced in Vitamin B12 Deficiency

      Yulia H. Lin
      Experienced in Vitamin B12 Deficiency

      Yulia H. Lin
      28 Division St, K7L 3N6, 
      Kingston, ON, CA 

      Yulia Lin practices in Kingston, Canada. Ms. Lin is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Hemolytic Transfusion Reaction, Iron Deficiency Anemia, Anemia, Hepatectomy, and Nephrectomy.

      Experienced in Vitamin B12 Deficiency

      Richard Y. Wu
      Experienced in Vitamin B12 Deficiency

      Richard Y. Wu
      Toronto, ON, CA 

      Richard Wu practices in Toronto, Canada. Mr. Wu is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Necrotizing Enterocolitis, Necrosis, Viral Gastroenteritis, and Cerebral Hypoxia.

      Experienced in Vitamin B12 Deficiency

      Brittany M. Salter
      Experienced in Vitamin B12 Deficiency

      Brittany M. Salter
      Hamilton, ON, CA 

      Brittany Salter practices in Hamilton, Canada. Ms. Salter is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Eosinophilic Asthma, Chronic Eosinophilic Pneumonia, Eosinophilic Pneumonia, Tissue Biopsy, and Bone Marrow Transplant.

      Experienced in Vitamin B12 Deficiency

      Laura S. Rossi
      Experienced in Vitamin B12 Deficiency

      Laura S. Rossi
      Hamilton, ON, CA 

      Laura Rossi practices in Hamilton, Canada. Ms. Rossi is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Colitis, Viral Gastroenteritis, Cystic Fibrosis, and Vitamin B12 Deficiency.

      Experienced in Vitamin B12 Deficiency

      Cyrus C. Hsia
      Experienced in Vitamin B12 Deficiency

      Cyrus C. Hsia
      London, ON, CA 

      Cyrus Hsia practices in London, Canada. Mr. Hsia is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. His top areas of expertise are Kimura Disease, Adult Immune Thrombocytopenia, Immune Thrombocytopenic Purpura (ITP), Bone Marrow Aspiration, and Splenectomy.

      Experienced in Vitamin B12 Deficiency

      Caroline Malcolmson
      Experienced in Vitamin B12 Deficiency

      Caroline Malcolmson
      Toronto, ON, CA 

      Caroline Malcolmson practices in Toronto, Canada. Ms. Malcolmson is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. Her top areas of expertise are Lysinuric Protein Intolerance, Vitamin B12 Deficiency, Von Willebrand Disease (VWD), and Factor 13 Deficiency.

      Experienced in Vitamin B12 Deficiency

      Kathene C. Henry-Johnson
      Experienced in Vitamin B12 Deficiency

      Kathene C. Henry-Johnson
      Toronto, ON, CA 

      Kathene Henry-Johnson practices in Toronto, Canada. Henry-Johnson is rated as an Experienced expert by MediFind in the treatment of Vitamin B12 Deficiency. Their top areas of expertise are Necrotizing Enterocolitis, Vitamin D Deficiency, Necrosis, and Viral Gastroenteritis.

      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 1-19 of 19

      Last Updated: 01/09/2026

      When should I see a Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 Vitamin B12 Deficiency doctor in Ontario, CA?

      You can find a Vitamin B12 Deficiency doctor in any of the 10 largest U.S. cities by clicking below:

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      Vitamin B12 Deficiency doctor near San Jose, CA

      How does MediFind rank Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 Vitamin B12 Deficiency doctor search results page. 

      Why is it important to get a second opinion from a different Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 Vitamin B12 Deficiency 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 Vitamin B12 Deficiency doctors in Ontario, CA?

      Look for the filter feature on the left side of the Vitamin B12 Deficiency 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 Vitamin B12 Deficiency doctor that offers video calls?

      Look for the filter feature on the left-side of the Vitamin B12 Deficiency 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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