The 20 Best Arrhythmias Doctors Near Me in Ontario, CA

Find the Top Arrhythmias Experts and Specialists

Last Updated: 04/28/2026

Save doctors for later
Sign Up
Not sure about your diagnosis?
Check Your Symptoms
Already have a doctor?
Find A Second Opinion

MediFind found 164 doctor with experience in Arrhythmias near Ontario, CA. Of these, 123 are Experienced, 28 are Advanced, 12 are Distinguished and 1 are Elite.

Location
LocationClose
164 providers found
    Elite in Arrhythmias

    Kumaraswamy Nanthakumar
    Elite in Arrhythmias

    Kumaraswamy Nanthakumar
    Toronto, ON, CA 

    Kumaraswamy Nanthakumar practices practicing medicine in Toronto, Canada. Nanthakumar is rated as an Elite expert by MediFind in the treatment of Arrhythmias. They are also highly rated in 13 other conditions, according to our data. Their clinical expertise encompasses Ventricular Fibrillation, Familial Ventricular Tachycardia, Ventricular Tachycardia, Cardiac Ablation, and Heart Transplant.

    Distinguished in Arrhythmias

    David H. Birnie
    Distinguished in Arrhythmias

    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 Arrhythmias. 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 Arrhythmias

    Adrian M. Baranchuk
    Distinguished in Arrhythmias

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

    Adrian Baranchuk practices practicing medicine in Kingston, Canada. Mr. Baranchuk is rated as a Distinguished expert by MediFind in the treatment of Arrhythmias. 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.

    Learn about our expert tiers
    Distinguished in Arrhythmias

    Eugene Downar
    Distinguished in Arrhythmias

    Eugene Downar
    Toronto, ON, CA 

    Eugene Downar practices practicing medicine in Toronto, Canada. Mr. Downar is rated as a Distinguished expert by MediFind in the treatment of Arrhythmias. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Ventricular Tachycardia, Arrhythmias, Familial Ventricular Tachycardia, Cardiac Ablation, and Heart Transplant.

    Distinguished in Arrhythmias

    Pablo B. Nery
    Distinguished in Arrhythmias

    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 Arrhythmias. 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 Arrhythmias

    Krishnakumar M. Nair
    Distinguished in Arrhythmias

    Krishnakumar M. Nair
    Toronto, ON, CA 

    Krishnakumar Nair practices practicing medicine in Toronto, Canada. Nair is rated as a Distinguished expert by MediFind in the treatment of Arrhythmias. They are also highly rated in 9 other conditions, according to our data. Their clinical expertise encompasses Arrhythmias, Tetralogy of Fallot, Ventricular Tachycardia, Cardiac Ablation, and Heart Transplant.

    Distinguished in Arrhythmias

    Stephane Masse
    Distinguished in Arrhythmias

    Stephane Masse
    Toronto, ON, CA 

    Stephane Masse practices practicing medicine in Toronto, Canada. Ms. Masse is rated as a Distinguished expert by MediFind in the treatment of Arrhythmias. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Ventricular Fibrillation, Ventricular Tachycardia, Arrhythmias, Paroxysmal Supraventricular Tachycardia (PSVT), and Cardiac Ablation.

    Distinguished in Arrhythmias

    Abhishek P. Bhaskaran
    Distinguished in Arrhythmias

    Abhishek P. Bhaskaran
    Toronto, ON, CA 

    Abhishek Bhaskaran practices practicing medicine in Toronto, Canada. Mr. Bhaskaran is rated as a Distinguished expert by MediFind in the treatment of Arrhythmias. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Arrhythmias, Ventricular Tachycardia, Familial Ventricular Tachycardia, Paroxysmal Supraventricular Tachycardia (PSVT), and Cardiac Ablation.

    Distinguished in Arrhythmias

    George J. Klein
    Distinguished in Arrhythmias

    George J. Klein
    339 Windermere Rd, 
    London, ON, CA 

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

    Distinguished in Arrhythmias

    Lorne J. Gula
    Distinguished in Arrhythmias

    Lorne J. Gula
    London, ON, CA 

    Lorne Gula practices practicing medicine in London, Canada. Mr. Gula is rated as a Distinguished expert by MediFind in the treatment of Arrhythmias. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Arrhythmias, Ventricular Tachycardia, Ventricular Fibrillation, Cardiac Arrest, and Cardiac Ablation.

    Distinguished in Arrhythmias

    Jeff S. Healey
    Distinguished in Arrhythmias

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

    Jeff Healey practices practicing medicine in Hamilton, Canada. Mr. Healey is rated as a Distinguished expert by MediFind in the treatment of Arrhythmias. 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.

    Distinguished in Arrhythmias

    Vijay S. Chauhan
    Distinguished in Arrhythmias

    Vijay S. Chauhan
    St Michael's Hospital, 
    Toronto, ON, CA 

    Vijay Chauhan practices practicing medicine in Toronto, Canada. Mr. Chauhan is rated as a Distinguished expert by MediFind in the treatment of Arrhythmias. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Cardiomyopathy, Cardiac Arrest, Arrhythmias, Ventricular Tachycardia, and Cardiac Ablation.

    Distinguished in Arrhythmias

    Damian P. Redfearn
    Distinguished in Arrhythmias

    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 Arrhythmias. 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.

    Advanced in Arrhythmias

    Allan C. Skanes
    Advanced in Arrhythmias

    Allan C. Skanes
    London, ON, CA 

    Allan Skanes practices practicing medicine in London, Canada. Mr. Skanes is rated as an Advanced expert by MediFind in the treatment of Arrhythmias. 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.

    Advanced in Arrhythmias

    Martin S. Green
    Advanced in Arrhythmias

    Martin S. Green
    40 Ruskin Street, 
    Ottawa, ON, CA 

    Martin Green practices practicing medicine in Ottawa, Canada. Mr. Green is rated as an Advanced expert by MediFind in the treatment of Arrhythmias. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Arrhythmias, Heart Block, Cardiac Arrest, Ventricular Tachycardia, and Cardiac Ablation.

    Advanced in Arrhythmias

    George A. Wells
    Advanced in Arrhythmias

    George A. Wells
    40 Ruskin Street, 
    Ottawa, ON, CA 

    George Wells practices practicing medicine in Ottawa, Canada. Mr. Wells is rated as an Advanced expert by MediFind in the treatment of Arrhythmias. He is also highly rated in 27 other conditions, according to our data. His clinical expertise encompasses Fainting, Transient Ischemic Attack (TIA), Heart Attack, Cardiac Ablation, and Percutaneous Coronary Intervention (PCI).

    Advanced in Arrhythmias

    Fidel D. Ramirez
    Advanced in Arrhythmias

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

    Fidel Ramirez practices practicing medicine in Ottawa, Canada. Mr. Ramirez is rated as an Advanced expert by MediFind in the treatment of Arrhythmias. 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).

    Advanced in Arrhythmias

    Paul Dorian
    Advanced in Arrhythmias

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

    Paul Dorian practices practicing medicine in Toronto, Canada. Mr. Dorian is rated as an Advanced expert by MediFind in the treatment of Arrhythmias. 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.

    Advanced in Arrhythmias

    Girish M. Nair
    Advanced in Arrhythmias

    Girish M. Nair
    40 Ruskin Street, 
    Ottawa, ON, CA 

    Girish Nair practices practicing medicine in Ottawa, Canada. Mr. Nair is rated as an Advanced expert by MediFind in the treatment of Arrhythmias. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Arrhythmias, Ventricular Fibrillation, Ventricular Tachycardia, and Cardiac Ablation.

    Advanced in Arrhythmias

    Christopher S. Simpson
    Advanced in Arrhythmias

    Christopher S. Simpson
    Armstrong 3, 76 Stuart Street, 
    Kingston, ON, CA 

    Christopher Simpson practices practicing medicine in Kingston, Canada. Mr. Simpson is rated as an Advanced expert by MediFind in the treatment of Arrhythmias. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Cardiac Arrest, Ventricular Fibrillation, Arrhythmias, Cardiac Ablation, and Fasciotomy.

    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 164

    Last Updated: 04/28/2026

    What is the definition of Arrhythmias?

    An arrhythmia is a disorder of the heart rate (pulse) or heart rhythm. The heart can beat too fast (tachycardia), too slow (bradycardia), or irregularly.

    An arrhythmia can be harmless, a sign of other heart problems, or an immediate danger to your health.

    When should I see an Arrhythmias 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 Arrhythmias 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 Arrhythmias doctor in Ontario, CA?

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

    Arrhythmias doctor near New York, NY
    Arrhythmias doctor near Los Angeles, CA
    Arrhythmias doctor near Chicago, IL
    Arrhythmias doctor near Houston, TX
    Arrhythmias doctor near Phoenix, AZ
    Arrhythmias doctor near Philadelphia, PA
    Arrhythmias doctor near Atlanta, GA
    Arrhythmias doctor near Boston, MA
    Arrhythmias doctor near Dallas, TX
    Arrhythmias doctor near San Jose, CA

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

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

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

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

    Read more about our Content Policy.