The 20 Best Grass Allergy Doctors Near Me in Ontario, CA

Find the Top Grass Allergy Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 77 doctor with experience in Grass Allergy near Ontario, CA. Of these, 67 are Experienced, 8 are Advanced and 2 are Distinguished.

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77 providers found
    Distinguished in Grass Allergy

    Anne K. Ellis
    Distinguished in Grass Allergy

    Anne K. Ellis
    Kingston, ON, CA 

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

    Distinguished in Grass Allergy

    Lisa M. Steacy
    Distinguished in Grass Allergy

    Lisa M. Steacy
    76 Stuart Street, 
    Kingston, ON, CA 

    Lisa Steacy practices practicing medicine in Kingston, Canada. Ms. Steacy is rated as a Distinguished expert by MediFind in the treatment of Grass Allergy. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Allergic Rhinitis, Grass Allergy, Giant Papillary Conjunctivitis, and Vernal Keratoconjunctivitis.

    Advanced in Grass Allergy

    Susan Waserman
    Advanced in Grass Allergy

    Susan Waserman
    Hamilton, ON, CA 

    Susan Waserman practices practicing medicine in Hamilton, Canada. Ms. Waserman is rated as an Advanced expert by MediFind in the treatment of Grass Allergy. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Anaphylaxis, Allergic Rhinitis, Asthma, and Hives.

    Learn about our expert tiers
    Advanced in Grass Allergy

    Anne M. Salapatek
    Advanced in Grass Allergy

    Anne M. Salapatek
    Mississauga, ON, CA 

    Anne Salapatek practices practicing medicine in Mississauga, Canada. Ms. Salapatek is rated as an Advanced expert by MediFind in the treatment of Grass Allergy. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Giant Papillary Conjunctivitis, Vernal Keratoconjunctivitis, Allergic Conjunctivitis, and Conjunctivitis (Pink Eye).

    Advanced in Grass Allergy

    Peter Couroux
    Advanced in Grass Allergy

    Peter Couroux
    Mississauga, ON, CA 

    Peter Couroux practices practicing medicine in Mississauga, Canada. Mr. Couroux is rated as an Advanced expert by MediFind in the treatment of Grass Allergy. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Giant Papillary Conjunctivitis, Vernal Keratoconjunctivitis, Allergic Conjunctivitis, and Allergic Rhinitis.

    Advanced in Grass Allergy

    Elena F. Verdu
    Advanced in Grass Allergy

    Elena F. Verdu
    Hamilton, ON, CA 

    Elena Verdu practices practicing medicine in Hamilton, Canada. Ms. Verdu is rated as an Advanced expert by MediFind in the treatment of Grass Allergy. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Celiac Disease, Malabsorption, Irritable Bowel Syndrome (IBS), Colitis, and Colonoscopy.

    Advanced in Grass Allergy

    Antonio Bognanni
    Advanced in Grass Allergy

    Antonio Bognanni
    Hamilton, ON, CA 

    Antonio Bognanni practices practicing medicine in Hamilton, Canada. Mr. Bognanni is rated as an Advanced expert by MediFind in the treatment of Grass Allergy. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Allergic Rhinitis, Grass Allergy, Anaphylaxis, and Asthma.

    Advanced in Grass Allergy

    Derek K. Chu
    Advanced in Grass Allergy

    Derek K. Chu
    Hamilton, ON, CA 

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

    Advanced in Grass Allergy

    Daniel E. Adams
    Advanced in Grass Allergy

    Daniel E. Adams
    Kingston, ON, CA 

    Daniel Adams practices practicing medicine in Kingston, Canada. Mr. Adams is rated as an Advanced expert by MediFind in the treatment of Grass Allergy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Giant Papillary Conjunctivitis, Grass Allergy, Allergic Rhinitis, and Vernal Keratoconjunctivitis.

    Advanced in Grass Allergy

    Charles W. Frankish
    Advanced in Grass Allergy

    Charles W. Frankish
    Ottawa, ON, CA 

    Charles Frankish practices practicing medicine in Ottawa, Canada. Mr. Frankish is rated as an Advanced expert by MediFind in the treatment of Grass Allergy. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Grass Allergy, Giant Papillary Conjunctivitis, Eosinophilic Esophagitis, and Esophagitis.

    Experienced in Grass Allergy

    Shawn A. Winer
    Experienced in Grass Allergy

    Shawn A. Winer
    Toronto, ON, CA 

    Shawn Winer practices practicing medicine in Toronto, Canada. Mr. Winer is rated as an Experienced expert by MediFind in the treatment of Grass Allergy. His clinical expertise encompasses Obesity, Colitis, Viral Gastroenteritis, Grass Allergy, and Endoscopy.

    Experienced in Grass Allergy

    Jennifer D. Gerdts
    Experienced in Grass Allergy

    Jennifer D. Gerdts
    Toronto, ON, CA 

    Jennifer Gerdts practices practicing medicine in Toronto, Canada. Ms. Gerdts is rated as an Experienced expert by MediFind in the treatment of Grass Allergy. She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Anaphylaxis, Food Allergy, Asthma, and Grass Allergy.

    Experienced in Grass Allergy

    Julia M. Upton
    Experienced in Grass Allergy

    Julia M. Upton
    Toronto, ON, CA 

    Julia Upton practices practicing medicine in Toronto, Canada. Ms. Upton is rated as an Experienced expert by MediFind in the treatment of Grass Allergy. She is also highly rated in 7 other conditions, according to our data. Her clinical expertise encompasses Anaphylaxis, Food Allergy, Familial Chronic Mucocutaneous Candidiasis, and Asthma.

    Experienced in Grass Allergy

    Maria I. Sanchez-Pinto
    Experienced in Grass Allergy

    Maria I. Sanchez-Pinto
    Hamilton, ON, CA 

    Maria Sanchez-Pinto practices practicing medicine in Hamilton, Canada. Ms. Sanchez-Pinto is rated as an Experienced expert by MediFind in the treatment of Grass Allergy. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Celiac Disease, Malabsorption, Irritable Bowel Syndrome (IBS), Indigestion, and Endoscopy.

    Experienced in Grass Allergy

    Gordon L. Sussman
    Experienced in Grass Allergy

    Gordon L. Sussman
    Toronto, ON, CA 

    Gordon Sussman practices practicing medicine in Toronto, Canada. Mr. Sussman is rated as an Experienced expert by MediFind in the treatment of Grass Allergy. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Chronic Spontaneous Urticaria (CSU), Hives, Angioedema, and Asthma.

    Experienced in Grass Allergy

    Terry J. Walker
    Experienced in Grass Allergy

    Terry J. Walker
    Kingston, ON, CA 

    Terry Walker practices practicing medicine in Kingston, Canada. Walker is rated as an Experienced expert by MediFind in the treatment of Grass Allergy. They are also highly rated in 2 other conditions, according to our data. Their clinical expertise encompasses Giant Papillary Conjunctivitis, Allergic Rhinitis, Grass Allergy, and Vernal Keratoconjunctivitis.

    Experienced in Grass Allergy

    Mark Larche
    Experienced in Grass Allergy

    Mark Larche
    1200 Main St W, 
    Hamilton, ON, CA 

    Mark Larche practices practicing medicine in Hamilton, Canada. Mr. Larche is rated as an Experienced expert by MediFind in the treatment of Grass Allergy. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Asthma, Giant Papillary Conjunctivitis, Adult Immune Thrombocytopenia, and Grass Allergy.

    Experienced in Grass Allergy

    Marko R. Simunovic
    Experienced in Grass Allergy

    Marko R. Simunovic
    Hamilton, ON, CA 

    Marko Simunovic practices practicing medicine in Hamilton, Canada. Mr. Simunovic is rated as an Experienced expert by MediFind in the treatment of Grass Allergy. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Colorectal Cancer, Grass Allergy, Liver Cancer, Hepatectomy, and Lung Transplant.

    Experienced in Grass Allergy

    Dr. Raman K. Verma
    Experienced in Grass Allergy

    Dr. Raman K. Verma
    Ottawa, ON, CA 
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    Raman Verma practices practicing medicine in Ottawa, Canada. Dr. Verma is rated as an Experienced provider by MediFind in the treatment of Grass Allergy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Juvenile Primary Osteoporosis, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

    Experienced in Grass Allergy

    Yetiani M. Roldan
    Experienced in Grass Allergy

    Yetiani M. Roldan
    Hamilton, ON, CA 

    Yetiani Roldan practices practicing medicine in Hamilton, Canada. Roldan is rated as an Experienced expert by MediFind in the treatment of Grass Allergy. Their clinical expertise encompasses Grass Allergy, Anaphylaxis, Venous Thromboembolism (VTE), and Acute Myeloid Leukemia (AML).

    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 77

    Last Updated: 04/28/2026

    What is the definition of Grass Allergy?

    Many people are allergic to pollens from grass and weeds. These allergies most often occur in the late spring and summer.

    This article is for information only. DO NOT use it to treat or manage an actual poison exposure. If you or someone you are with has an exposure, call the local emergency number (such as 911), or the local poison control center can be reached directly by calling the national toll-free Poison Help hotline (1-800-222-1222) from anywhere in the United States.

    When should I see a Grass Allergy 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 Grass Allergy 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 Grass Allergy doctor in Ontario, CA?

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

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    How does MediFind rank Grass Allergy 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 Grass Allergy 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 Grass Allergy 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 Grass Allergy doctor search results page. 

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

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

    Look for the filter feature on the left-side of the Grass Allergy 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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