The 20 Best Sinusitis Doctors Near Me in Ontario, CA

Find the Top Sinusitis Experts and Specialists

Last Updated: 06/30/2026

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MediFind found 53 doctor with experience in Sinusitis near Ontario, CA. Of these, 47 are Experienced, 5 are Advanced and 1 are Distinguished.

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53 providers found
    Distinguished in Sinusitis

    Shaun J. Kilty
    Distinguished in Sinusitis

    Shaun J. Kilty
    Referral may be required
    Department Of Otolaryngology Head And Neck Surgery, 
    Ottawa, ON, CA 

    Shaun Kilty practices practicing medicine in Ottawa, Canada. Mr. Kilty is rated as a Distinguished expert by MediFind in the treatment of Sinusitis. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Sinusitis, Nasal Polyps, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Sinus Cancer, and Endoscopy.

    Advanced in Sinusitis

    Leigh J. Sowerby
    Advanced in Sinusitis

    Leigh J. Sowerby
    Referral may be required
    London, ON, CA 

    Leigh Sowerby practices practicing medicine in London, Canada. Sowerby is rated as an Advanced expert by MediFind in the treatment of Sinusitis. They are also highly rated in 7 other conditions, according to our data. Their clinical expertise encompasses Nasal Polyps, Sinusitis, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Septoplasty, and Endoscopy.

    Advanced in Sinusitis

    Doron D. Sommer
    Advanced in Sinusitis

    Doron D. Sommer
    Referral may be required
    Division Of Otolaryngology Head & Neck Surgery, 
    Hamilton, ON, CA 

    Doron Sommer practices practicing medicine in Hamilton, Canada. Mr. Sommer is rated as an Advanced expert by MediFind in the treatment of Sinusitis. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Sinusitis, Nasal Polyps, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Endoscopy, and Osteotomy.

    Learn about our expert tiers
    Advanced in Sinusitis

    Eric A. Monteiro
    Advanced in Sinusitis

    Eric A. Monteiro
    Referral may be required
    Department Of Otolaryngology Head And Neck Surgery, 
    Toronto, ON, CA 

    Eric Monteiro practices practicing medicine in Toronto, Canada. Mr. Monteiro is rated as an Advanced expert by MediFind in the treatment of Sinusitis. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Olfactory Neuroblastoma, Sinusitis, Papillary Thyroid Cancer, Thyroidectomy, and Parathyroidectomy.

    Advanced in Sinusitis

    Smriti Nayan
    Advanced in Sinusitis

    Smriti Nayan
    Referral may be required
    1200 Main St. W, 
    Hamilton, ON, CA 

    Smriti Nayan practices practicing medicine in Hamilton, Canada. Ms. Nayan is rated as an Advanced expert by MediFind in the treatment of Sinusitis. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Sinusitis, Retropharyngeal Abscess, Cavernous Sinus Thrombosis, Lemierre Syndrome, and Endoscopy.

    Advanced in Sinusitis

    Ian J. Witterick
    Advanced in Sinusitis

    Ian J. Witterick
    Referral may be required
    Department Of Otolaryngology Head And Neck Surgery, 
    Toronto, ON, CA 

    Ian Witterick practices practicing medicine in Toronto, Canada. Mr. Witterick is rated as an Advanced expert by MediFind in the treatment of Sinusitis. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Olfactory Neuroblastoma, Sinus Cancer, Thyroid Nodule, Thyroidectomy, and Endoscopy.

    Experienced in Sinusitis

    Ali N. Damji
    Experienced in Sinusitis

    Ali N. Damji
    Referral may be required
    Toronto, ON, CA 

    Ali Damji practices practicing medicine in Toronto, Canada. Mr. Damji is rated as an Experienced expert by MediFind in the treatment of Sinusitis. His clinical expertise encompasses Tonsillitis and Sinusitis.

    Experienced in Sinusitis

    Gary E. Garber
    Experienced in Sinusitis

    Gary E. Garber
    Referral may be required
    Ottawa, ON, CA 

    Gary Garber practices practicing medicine in Ottawa, Canada. Mr. Garber is rated as an Experienced expert by MediFind in the treatment of Sinusitis. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Hepatitis C, Hepatitis, Sepsis, and Urinary Tract Infection (UTI).

    Experienced in Sinusitis

    Kristian I. Macdonald
    Experienced in Sinusitis

    Kristian I. Macdonald
    Referral may be required
    Department Of Otolaryngology Head And Neck Surgery, 
    Ottawa, ON, CA 

    Kristian Macdonald practices practicing medicine in Ottawa, Canada. Macdonald is rated as an Experienced expert by MediFind in the treatment of Sinusitis. Their clinical expertise encompasses Sinusitis, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Nasal Polyps, and Endoscopy.

    Experienced in Sinusitis

    Allan D. Vescan
    Experienced in Sinusitis

    Allan D. Vescan
    Referral may be required
    Department Of Otolaryngology Head And Neck Surgery, 
    Toronto, ON, CA 

    Allan Vescan practices practicing medicine in Toronto, Canada. Mr. Vescan is rated as an Experienced expert by MediFind in the treatment of Sinusitis. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Cerebrospinal Fluid Leak, Hypothalamic Tumor, Pituitary Tumor, Endoscopy, and Endoscopic Transnasal Transsphenoidal Surgery.

    Experienced in Sinusitis

    Lisa M. Caulley
    Experienced in Sinusitis

    Lisa M. Caulley
    Referral may be required
    Department Of Otolaryngology Head And Neck Surgery, 
    Ottawa, ON, CA 

    Lisa Caulley practices practicing medicine in Ottawa, Canada. Ms. Caulley is rated as an Experienced expert by MediFind in the treatment of Sinusitis. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Pituitary Tumor, Hypothalamic Tumor, Tonsillitis, Endoscopic Transnasal Transsphenoidal Surgery, and Thyroidectomy.

    Experienced in Sinusitis

    Elysia M. Grose
    Experienced in Sinusitis

    Elysia M. Grose
    Referral may be required
    Department Of Otolaryngology Head & Neck Surgery, St. Michael's Hospital, 
    Toronto, ON, CA 

    Elysia Grose practices practicing medicine in Toronto, Canada. Ms. Grose is rated as an Experienced expert by MediFind in the treatment of Sinusitis. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Nasal Polyps, Sinusitis, Septoplasty, and Endoscopy.

    Experienced in Sinusitis

    Shireen A. Samargandy
    Experienced in Sinusitis

    Shireen A. Samargandy
    Referral may be required
    Department Of Otolaryngology Head And Neck Surgery, 
    Toronto, ON, CA 

    Shireen Samargandy practices practicing medicine in Toronto, Canada. Ms. Samargandy is rated as an Experienced expert by MediFind in the treatment of Sinusitis. Her clinical expertise encompasses Sinusitis, Secondary Immunodeficiency (SID), NUT Carcinoma, Endoscopy, and Tissue Biopsy.

    Experienced in Sinusitis

    Dr. Bharat R. Gandhi
    Experienced in Sinusitis

    Dr. Bharat R. Gandhi
    Referral may be required
    Toronto, ON, CA 
    Languages Spoken:
    English, Hindi, Spanish, Urdu
    See accepted insurances
    Accepting New Patients

    Bharat Gandhi practices practicing medicine in Toronto, Canada. Dr. Gandhi is rated as an Experienced provider by MediFind in the treatment of Sinusitis. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Obesity, High Cholesterol, Sitosterolemia, and Obesity in Children. Dr. Gandhi is currently accepting new patients.

    Experienced in Sinusitis

    Jenny B. Xiao
    Experienced in Sinusitis

    Jenny B. Xiao
    Referral may be required
    Department Of Otolaryngology Head And Neck Surgery, St. Michael's Hospital, 
    Toronto, ON, CA 

    Jenny Xiao practices practicing medicine in Toronto, Canada. Ms. Xiao is rated as an Experienced expert by MediFind in the treatment of Sinusitis. Her clinical expertise encompasses Sinusitis, Epidural Abscess, Necrotizing Fasciitis, Gastrostomy, and Septoplasty.

    Experienced in Sinusitis

    Tobial Mchugh
    Experienced in Sinusitis

    Tobial Mchugh
    Referral may be required
    Otolaryngology Head And Neck Surgery Division, 1200 Main St. West, 
    Hamilton, ON, CA 

    Tobial Mchugh practices practicing medicine in Hamilton, Canada. Mchugh is rated as an Experienced expert by MediFind in the treatment of Sinusitis. Their clinical expertise encompasses Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Sinusitis, Nasal Polyps, and Rathke Cleft Cyst.

    Experienced in Sinusitis

    Anne K. Ellis
    Experienced in Sinusitis

    Anne K. Ellis
    Referral may be required
    Kingston, ON, CA 

    Anne Ellis practices practicing medicine in Kingston, Canada. Ms. Ellis is rated as an Experienced expert by MediFind in the treatment of Sinusitis. She is also highly rated in 10 other conditions, according to our data. Her clinical expertise encompasses Allergic Rhinitis, Grass Allergy, Anaphylaxis, and Asthma.

    Experienced in Sinusitis

    Derek K. Chu
    Experienced in Sinusitis

    Derek K. Chu
    Referral may be required
    Hamilton, ON, CA 

    Derek Chu practices practicing medicine in Hamilton, Canada. Mr. Chu is rated as an Experienced expert by MediFind in the treatment of Sinusitis. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Anaphylaxis, Asthma, Food Allergy, and Allergic Rhinitis.

    Experienced in Sinusitis

    Andrea Lasso
    Experienced in Sinusitis

    Andrea Lasso
    Referral may be required
    1053 Carling Ave, 
    Ottawa, ON, CA 

    Andrea Lasso practices practicing medicine in Ottawa, Canada. Ms. Lasso is rated as an Experienced expert by MediFind in the treatment of Sinusitis. Her clinical expertise encompasses Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Nasal Polyps, Sinusitis, and Apoplexy.

    Experienced in Sinusitis

    Vincent Wu
    Experienced in Sinusitis

    Vincent Wu
    Referral may be required
    Department Of Otolaryngology Head & Neck Surgery, St. Michael's Hospital, 
    Toronto, ON, CA 

    Vincent Wu practices practicing medicine in Toronto, Canada. Mr. Wu is rated as an Experienced expert by MediFind in the treatment of Sinusitis. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Hereditary Hemorrhagic Telangiectasia, Tonsillitis, Telangiectasia, Septoplasty, and Thyroidectomy.

    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 53

    Last Updated: 06/30/2026

    What is the definition of Sinusitis?

    Sinusitis is present when the tissue lining the sinuses become swollen or inflamed. It occurs as the result of an inflammatory reaction or an infection from a virus, bacteria, or fungus.

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

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

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

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

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

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