The 20 Best Vitamin D Deficiency Doctors Near Me in Ontario, CA

Find the Top Vitamin D Deficiency Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 72 doctor with experience in Vitamin D Deficiency near Ontario, CA. Of these, 53 are Experienced, 13 are Advanced and 6 are Distinguished.

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72 providers found
    Distinguished in Vitamin D Deficiency

    Megan B. Brickley
    Distinguished in Vitamin D Deficiency

    Megan B. Brickley
    Hamilton, ON, CA 

    Megan Brickley practices practicing medicine in Hamilton, Canada. Ms. Brickley is rated as a Distinguished expert by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Scurvy, Vitamin D Deficiency, Rickets, and Osteomalacia.

    Distinguished in Vitamin D Deficiency

    James D. Mcnally
    Distinguished in Vitamin D Deficiency

    James D. Mcnally
    Ottawa, ON, CA 

    James Mcnally practices practicing medicine in Ottawa, Canada. Mr. Mcnally is rated as a Distinguished expert by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Vitamin D Deficiency, Malnutrition, Parainfluenza, and Flu.

    Distinguished in Vitamin D Deficiency

    Cedric Annweiler
    Distinguished in Vitamin D Deficiency

    Cedric Annweiler
    St. Joseph's Health Care London, 
    London, ON, CA 

    Cedric Annweiler practices practicing medicine in London, Canada. Mr. Annweiler is rated as a Distinguished expert by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Malnutrition, Vitamin D Deficiency, Severe Acute Respiratory Syndrome (SARS), COVID-19, and Cataract Removal.

    Learn about our expert tiers
    Distinguished in Vitamin D Deficiency

    Kusum N. Menon
    Distinguished in Vitamin D Deficiency

    Kusum N. Menon
    Ottawa, ON, CA 

    Kusum Menon practices practicing medicine in Ottawa, Canada. Menon is rated as a Distinguished expert by MediFind in the treatment of Vitamin D Deficiency. They are also highly rated in 5 other conditions, according to our data. Their clinical expertise encompasses Sepsis, Vitamin D Deficiency, Metabolic Acidosis, Liver Transplant, and Ileostomy.

    Distinguished in Vitamin D Deficiency

    Dean A. Fergusson
    Distinguished in Vitamin D Deficiency

    Dean A. Fergusson
    501 Smyth Rd, K1H 8L6, 
    Ottawa, ON, CA 

    Dean Fergusson practices practicing medicine in Ottawa, Canada. Mr. Fergusson is rated as a Distinguished expert by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Febrile Neutropenia, Traumatic Brain Injury, Anemia, Kidney Transplant, and Hepato-Pancreato-Biliary Surgery.

    Distinguished in Vitamin D Deficiency

    Lauralyn A. Mcintyre
    Distinguished in Vitamin D Deficiency

    Lauralyn A. Mcintyre
    Ottawa, ON, CA 

    Lauralyn Mcintyre practices practicing medicine in Ottawa, Canada. Ms. Mcintyre is rated as a Distinguished expert by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Sepsis, Vitamin D Deficiency, Metabolic Acidosis, and Subarachnoid Hemorrhage.

    Advanced in Vitamin D Deficiency

    Leanne M. Ward
    Advanced in Vitamin D Deficiency

    Leanne M. Ward
    401 Smyth Rd, R250H, K1H 8L1, 
    Ottawa, ON, CA 

    Leanne Ward practices practicing medicine in Ottawa, Canada. Ms. Ward is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 23 other conditions, according to our data. Her clinical expertise encompasses Hypophosphatemia, Rickets, X-Linked Hypophosphatemia, and Malnutrition.

    Advanced in Vitamin D Deficiency

    Philip M. Sherman
    Advanced in Vitamin D Deficiency

    Philip M. Sherman
    Toronto, ON, CA 

    Philip Sherman practices practicing medicine in Toronto, Canada. Mr. Sherman is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Necrotizing Enterocolitis, Viral Gastroenteritis, Necrosis, and Vitamin D Deficiency.

    Advanced in Vitamin D Deficiency

    Pavel Geier
    Advanced in Vitamin D Deficiency

    Pavel Geier
    Ottawa, ON, CA 

    Pavel Geier practices practicing medicine in Ottawa, Canada. Mr. Geier is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Nephrotic Syndrome, Vitamin D Deficiency, Malnutrition, and Hypercalcemia.

    Advanced in Vitamin D Deficiency

    Katie O'hearn
    Advanced in Vitamin D Deficiency

    Katie O'hearn
    ON, CA 

    Katie O'hearn practices practicing medicine in Canada. Ms. O'hearn is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Vitamin D Deficiency, Malnutrition, Autism Spectrum Disorder, and Autoimmune Hemolytic Anemia.

    Advanced in Vitamin D Deficiency

    Hope A. Weiler
    Advanced in Vitamin D Deficiency

    Hope A. Weiler
    Ottawa, ON, CA 

    Hope Weiler practices practicing medicine in Ottawa, Canada. Ms. Weiler is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Malnutrition, Obesity in Children, Vitamin D Deficiency, Childhood Iron Deficiency Anemia, and Orchiectomy.

    Advanced in Vitamin D Deficiency

    James D. Mcnally
    Advanced in Vitamin D Deficiency

    James D. Mcnally
    401 Smyth Road, 
    Ottawa, ON, CA 

    James Mcnally practices practicing medicine in Ottawa, Canada. Mr. Mcnally is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Vitamin D Deficiency, Malnutrition, Flu, and Nephrocalcinosis.

    Advanced in Vitamin D Deficiency

    Margaret L. Lawson
    Advanced in Vitamin D Deficiency

    Margaret L. Lawson
    Ottawa, ON, CA 

    Margaret Lawson practices practicing medicine in Ottawa, Canada. Ms. Lawson is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Type 1 Diabetes (T1D), Vitamin D Deficiency, Obesity in Children, and Malnutrition.

    Advanced in Vitamin D Deficiency

    Stephanie A. Redpath
    Advanced in Vitamin D Deficiency

    Stephanie A. Redpath
    Ottawa, ON, CA 

    Stephanie Redpath practices practicing medicine in Ottawa, Canada. Ms. Redpath is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Vitamin D Deficiency, Premature Infant, Hypothermia, and Hypercalcemia.

    Advanced in Vitamin D Deficiency

    Kathene C. Henry-Johnson
    Advanced in Vitamin D Deficiency

    Kathene C. Henry-Johnson
    Toronto, ON, CA 

    Kathene Henry-Johnson practices practicing medicine in Toronto, Canada. Henry-Johnson is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. They are also highly rated in 3 other conditions, according to our data. Their clinical expertise encompasses Necrotizing Enterocolitis, Vitamin D Deficiency, Necrosis, and Viral Gastroenteritis.

    Advanced in Vitamin D Deficiency

    Lee J. Pinnell
    Advanced in Vitamin D Deficiency

    Lee J. Pinnell
    Toronto, ON, CA 

    Lee Pinnell practices practicing medicine in Toronto, Canada. Mr. Pinnell is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Vitamin D Deficiency, Malnutrition, Colitis, and Viral Gastroenteritis.

    Advanced in Vitamin D Deficiency

    Linda Vong
    Advanced in Vitamin D Deficiency

    Linda Vong
    Toronto, ON, CA 

    Linda Vong practices practicing medicine in Toronto, Canada. Ms. Vong is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Vitamin D Deficiency, Severe Combined Immunodeficiency (SCID), Viral Gastroenteritis, and Colitis.

    Advanced in Vitamin D Deficiency

    Dickson Y. Wong
    Advanced in Vitamin D Deficiency

    Dickson Y. Wong
    London, ON, CA 

    Dickson Wong practices practicing medicine in London, Canada. Wong is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Vitamin D Deficiency, Alzheimer's Disease, Malnutrition, and Dementia.

    Advanced in Vitamin D Deficiency

    Dana J. Philpott
    Advanced in Vitamin D Deficiency

    Dana J. Philpott
    1 King's College Circle, 
    Toronto, ON, CA 

    Dana Philpott practices practicing medicine in Toronto, Canada. Philpott is rated as an Advanced expert by MediFind in the treatment of Vitamin D Deficiency. They are also highly rated in 4 other conditions, according to our data. Their clinical expertise encompasses Viral Gastroenteritis, Crohn's Disease, Colitis, and Vitamin D Deficiency.

    Experienced in Vitamin D Deficiency

    Anna C. Gunz
    Experienced in Vitamin D Deficiency

    Anna C. Gunz
    London, ON, CA 

    Anna Gunz practices practicing medicine in London, Canada. Ms. Gunz is rated as an Experienced expert by MediFind in the treatment of Vitamin D Deficiency. Her clinical expertise encompasses Vitamin D Deficiency, Malnutrition, Brain Abscess, and Cerebral Palsy.

    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 72

    Last Updated: 04/28/2026

    What is the definition of Vitamin D Deficiency?

    Vitamin D deficiency is when the body does not have enough vitamin D. Vitamin D is necessary for absorbing calcium and healthy bones.

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

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

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

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

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

    Look for the filter feature on the left-side of the Vitamin D 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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