The 20 Best Atrial Fibrillation Doctors Near Me in Ontario, CA

Find the Top Atrial Fibrillation Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 373 doctor with experience in Atrial Fibrillation near Ontario, CA. Of these, 310 are Experienced, 42 are Advanced, 16 are Distinguished and 5 are Elite.

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373 providers found
    Elite in Atrial Fibrillation

    Salim M. Yusuf
    Elite in Atrial Fibrillation

    Salim M. Yusuf
    30 Birge St, 
    Hamilton, ON, CA 

    Salim Yusuf practices practicing medicine in Hamilton, Canada. Mr. Yusuf is rated as an Elite expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Stroke, Heart Attack, Heart Bypass Surgery, and Coronary Artery Bypass Graft (CABG).

    Elite in Atrial Fibrillation

    Jeff S. Healey
    Elite in Atrial Fibrillation

    Jeff S. Healey
    1200 Main St W, 
    Hamilton, ON, CA 

    Jeff Healey practices practicing medicine in Hamilton, Canada. Mr. Healey is rated as an Elite expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Stroke, Arrhythmias, Cardiac Ablation, and Heart Bypass Surgery.

    Elite in Atrial Fibrillation

    Paul Dorian
    Elite in Atrial Fibrillation

    Paul Dorian
    St Michael's Hospital, 
    Toronto, ON, CA 

    Paul Dorian practices practicing medicine in Toronto, Canada. Mr. Dorian is rated as an Elite expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Ventricular Fibrillation, Atrial Fibrillation, Cardiac Arrest, Stroke, and Cardiac Ablation.

    Learn about our expert tiers
    Elite in Atrial Fibrillation

    Adrian M. Baranchuk
    Elite in Atrial Fibrillation

    Adrian M. Baranchuk
    76 Stuart Street, 
    Kingston, ON, CA 

    Adrian Baranchuk practices practicing medicine in Kingston, Canada. Mr. Baranchuk is rated as an Elite expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 35 other conditions, according to our data. His clinical expertise encompasses Heart Block, Atrial Fibrillation, Brugada Syndrome, Cardiac Ablation, and Heart Bypass Surgery.

    Elite in Atrial Fibrillation

    Luciano A. Sposato
    Elite in Atrial Fibrillation

    Luciano A. Sposato
    London, ON, CA 

    Luciano Sposato practices practicing medicine in London, Canada. Mr. Sposato is rated as an Elite expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Stroke, Transient Ischemic Attack (TIA), Atrial Fibrillation, Thrombectomy, and Stent Placement.

    Distinguished in Atrial Fibrillation

    David H. Birnie
    Distinguished in Atrial Fibrillation

    David H. Birnie
    40 Ruskin Street, 
    Ottawa, ON, CA 

    David Birnie practices practicing medicine in Ottawa, Canada. Mr. Birnie is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Sarcoidosis, Cardiomyopathy, Heart Block, Atrial Fibrillation, and Cardiac Ablation.

    Distinguished in Atrial Fibrillation

    James D. Douketis
    Distinguished in Atrial Fibrillation

    James D. Douketis
    St. Joseph's Healthcare Hamilton And McMaster University, 
    Hamilton, ON, CA 

    James Douketis practices practicing medicine in Hamilton, Canada. Douketis is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. They are also highly rated in 9 other conditions, according to our data. Their clinical expertise encompasses Venous Thromboembolism (VTE), Deep Vein Thrombosis, Mesenteric Venous Thrombosis, Thrombectomy, and Heart Bypass Surgery.

    Distinguished in Atrial Fibrillation

    Alexander P. Benz
    Distinguished in Atrial Fibrillation

    Alexander P. Benz
    Hamilton, ON, CA 

    Alexander Benz practices practicing medicine in Hamilton, Canada. Mr. Benz is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Stroke, Arterial Embolism, Heart Failure, and Cardiac Ablation.

    Distinguished in Atrial Fibrillation

    Richard P. Whitlock
    Distinguished in Atrial Fibrillation

    Richard P. Whitlock
    90 Main St W, 
    Hamilton, ON, CA 

    Richard Whitlock practices practicing medicine in Hamilton, Canada. Mr. Whitlock is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Arterial Embolism, Stroke, Heart Bypass Surgery, and Coronary Artery Bypass Graft (CABG).

    Distinguished in Atrial Fibrillation

    Emilie P. Cote-Belley
    Distinguished in Atrial Fibrillation

    Emilie P. Cote-Belley
    Hamilton, ON, CA 

    Emilie Cote-Belley practices practicing medicine in Hamilton, Canada. Ms. Cote-Belley is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Atrial Fibrillation, Low Blood Pressure, Sepsis, Heart Bypass Surgery, and Aortic Valve Replacement.

    Distinguished in Atrial Fibrillation

    Damian P. Redfearn
    Distinguished in Atrial Fibrillation

    Damian P. Redfearn
    Armstrong 3, 76 Stuart Street, 
    Kingston, ON, CA 

    Damian Redfearn practices practicing medicine in Kingston, Canada. Mr. Redfearn is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Arrhythmias, Ventricular Tachycardia, Cardiac Ablation, and Heart Bypass Surgery.

    Distinguished in Atrial Fibrillation

    Allan C. Skanes
    Distinguished in Atrial Fibrillation

    Allan C. Skanes
    London, ON, CA 

    Allan Skanes practices practicing medicine in London, Canada. Mr. Skanes is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Arrhythmias, Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Cardiac Arrest, and Cardiac Ablation.

    Distinguished in Atrial Fibrillation

    Yaariv Khaykin
    Distinguished in Atrial Fibrillation

    Yaariv Khaykin
    105-712 Davis Drive, L3Y 8C3, 
    Newmarket, ON, CA 

    Yaariv Khaykin practices practicing medicine in Newmarket, Canada. Khaykin is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. They are also highly rated in 5 other conditions, according to our data. Their clinical expertise encompasses Atrial Fibrillation, Arrhythmias, Ventricular Tachycardia, Cardiac Ablation, and Pacemaker Implantation.

    Distinguished in Atrial Fibrillation

    Clare L. Atzema
    Distinguished in Atrial Fibrillation

    Clare L. Atzema
    2075 Bayview Avenue, 
    Toronto, ON, CA 

    Clare Atzema practices practicing medicine in Toronto, Canada. Ms. Atzema is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Atrial Fibrillation, Transient Ischemic Attack (TIA), Stroke, and Febrile Neutropenia.

    Distinguished in Atrial Fibrillation

    Pablo B. Nery
    Distinguished in Atrial Fibrillation

    Pablo B. Nery
    40 Ruskin Street, 
    Ottawa, ON, CA 

    Pablo Nery practices practicing medicine in Ottawa, Canada. Mr. Nery is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Sarcoidosis, Arrhythmias, Ventricular Tachycardia, Atrial Fibrillation, and Cardiac Ablation.

    Distinguished in Atrial Fibrillation

    Dennis T. Ko
    Distinguished in Atrial Fibrillation

    Dennis T. Ko
    2075 Bayview Avenue, 
    Toronto, ON, CA 

    Dennis Ko practices practicing medicine in Toronto, Canada. Mr. Ko is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Heart Attack, Acute Coronary Syndrome, Atrial Fibrillation, Heart Bypass Surgery, and Percutaneous Coronary Intervention (PCI).

    Distinguished in Atrial Fibrillation

    Jeffrey S. Healey
    Distinguished in Atrial Fibrillation

    Jeffrey S. Healey
    Hamilton, ON, CA 

    Jeffrey Healey practices practicing medicine in Hamilton, Canada. Healey is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. They are also highly rated in 12 other conditions, according to our data. Their clinical expertise encompasses Atrial Fibrillation, Cardiac Arrest, Ventricular Fibrillation, Cardiac Ablation, and Transcatheter Aortic Valve Replacement (TAVR).

    Distinguished in Atrial Fibrillation

    Ian G. Stiell
    Distinguished in Atrial Fibrillation

    Ian G. Stiell
    Ottawa, ON, CA 

    Ian Stiell practices practicing medicine in Ottawa, Canada. Mr. Stiell is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Fainting, Diabetic Hyperglycemic Hyperosmolar Syndrome, Transient Ischemic Attack (TIA), and Cardiac Arrest.

    Distinguished in Atrial Fibrillation

    Mohammed Shurrab
    Distinguished in Atrial Fibrillation

    Mohammed Shurrab
    Room E-241, 2075 Bayview Avenue, 
    Toronto, ON, CA 

    Mohammed Shurrab practices practicing medicine in Toronto, Canada. Mr. Shurrab is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Atrial Fibrillation, Stroke, Arrhythmias, Cardiac Ablation, and Heart Bypass Surgery.

    Distinguished in Atrial Fibrillation

    Fidel D. Ramirez
    Distinguished in Atrial Fibrillation

    Fidel D. Ramirez
    40 Ruskin St, 
    Ottawa, ON, CA 

    Fidel Ramirez practices practicing medicine in Ottawa, Canada. Mr. Ramirez is rated as a Distinguished expert by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Ventricular Fibrillation, Atrial Fibrillation, Arrhythmias, Cardiac Ablation, and Percutaneous Coronary Intervention (PCI).

    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 373

    Last Updated: 04/28/2026

    What is the definition of Atrial Fibrillation?

    Atrial fibrillation (AF), also known as A-fib, is the most common type of irregular heartbeat (arrythmia) of the heart’s upper chambers (atria) which can lead to strokes, heart failure, blood clots in the heart and/or blockage of blood flow (ischemia) in the heart or other organs. Atrial fibrillation is frequently combined with a rapid heart rate (tachycardia) and occurs when the upper chambers of the heart (atria) receive abnormal electrical signals from the heart’s conduction system that causes the atria to quiver. Atrial fibrillation is categorized by the following four main types: Occasional (Paroxysmal) atrial fibrillation – This type of atrial fibrillation comes and goes, can last from minutes to hours, or even last as long as a week, or occur repeatedly, and may go away on its own. Persistent atrial fibrillation – In this type of atrial fibrillation, the irregular heart rhythm (arrythmia) doesn’t go away on its own and needs treatment to restore normal rhythm. Long-standing persistent atrial fibrillation – This type of atrial fibrillation occurs continuously, lasting longer than 12 months. Permanent atrial fibrillation – In this type of atrial fibrillation, the irregular heart rhythm cannot be restored to normal, in which case it becomes permanent, requiring heart medications and anticoagulants to prevent blood clots. Atrial fibrillation that occurs in individuals who do not have any heart defects or damage is called lone atrial fibrillation.

    When should I see an Atrial Fibrillation 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 an Atrial Fibrillation 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 Atrial Fibrillation doctor in Ontario, CA?

    You can find an Atrial Fibrillation doctor in any of the 10 largest U.S. cities by clicking below:

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    How does MediFind rank Atrial Fibrillation 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 Atrial Fibrillation 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 an Atrial Fibrillation 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 Atrial Fibrillation doctor search results page. 

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

    Look for the filter feature on the left side of the Atrial Fibrillation 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 an Atrial Fibrillation doctor that offers video calls?

    Look for the filter feature on the left-side of the Atrial Fibrillation 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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