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    Last Updated: 01/09/2026

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    MediFind found 45 doctor with experience in Atrial Fibrillation near Longmont, CO. Of these, 23 are Advanced, 15 are Experienced and 7 are Distinguished.

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    45 providers found
      Distinguished in Atrial Fibrillation

      Dr. Norman A. Gray
      Cardiology
      Distinguished in Atrial Fibrillation

      Dr. Norman A. Gray
      Cardiology

      Colorado Heart And Vascular PC

      2030 Mountain View Ave, Ste 220, 
      Longmont, CO 
       (1.7 miles away)
      303-595-2727
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients

      Norman Gray is a Cardiologist in Longmont, Colorado. Dr. Gray is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Infective Endocarditis, Atherosclerosis, and Coronary Heart Disease. Dr. Gray is currently accepting new patients.

      Distinguished in Atrial Fibrillation

      Dr. Bryan Reynolds
      Cardiology
      Distinguished in Atrial Fibrillation

      Dr. Bryan Reynolds
      Cardiology

      Boulder Heart At Longmont

      2101 Ken Pratt Blvd, 
      Longmont,, CO 
       (2.2 miles away)
      303-442-2395
      Languages Spoken:
      English
      See accepted insurances

      Bryan Reynolds is a Cardiologist in Longmont,, Colorado. Dr. Reynolds is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Atherosclerosis, Coronary Heart Disease, and Angina.

      Advanced in Atrial Fibrillation

      Dr. John Stathis
      Cardiology
      Advanced in Atrial Fibrillation

      Dr. John Stathis
      Cardiology

      Longmont Clinic Lab

      1925 Mountain View Ave, 
      Longmont,, CO 
       (1.5 miles away)
      303-485-3325
      Languages Spoken:
      English
      See accepted insurances

      John Stathis is a Cardiologist in Longmont,, Colorado. Dr. Stathis is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Coronary Heart Disease, Angina, Atherosclerosis, and Atrial Fibrillation.

      Learn about our expert tiers
      Advanced in Atrial Fibrillation

      Dr. Lawrence D. Lazar
      Cardiology | Interventional Cardiology
      Advanced in Atrial Fibrillation

      Dr. Lawrence D. Lazar
      Cardiology | Interventional Cardiology

      Colorado Heart And Vascular PC

      2030 Mountain View Ave, Ste 220, 
      Longmont, CO 
       (1.7 miles away)
      303-595-2727
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients

      Lawrence Lazar is a Cardiologist and an Interventional Cardiologist in Longmont, Colorado. Dr. Lazar is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Apoplexy, Heart Attack, Angina, and Arterial Embolism. Dr. Lazar is currently accepting new patients.

      Distinguished in Atrial Fibrillation

      Dr. Ethan R. Ellis
      Cardiac Electrophysiology | Cardiology
      Distinguished in Atrial Fibrillation

      Dr. Ethan R. Ellis
      Cardiac Electrophysiology | Cardiology

      Poudre Valley Medical Group LLC

      1760 E Ken Pratt Blvd, 
      Longmont, CO 
       (2.4 miles away)
      Languages Spoken:
      English, Castilian, Spanish
      See accepted insurances
      Accepting New Patients

      Ethan Ellis is a Cardiac Electrophysiologist and a Cardiologist in Longmont, Colorado. Dr. Ellis is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Ectopic Heartbeat, Arrhythmias, Cardiac Ablation, and Pacemaker Implantation. Dr. Ellis is currently accepting new patients.

      Distinguished in Atrial Fibrillation

      Dr. David F. Katz
      Cardiac Electrophysiology | Cardiology
      Distinguished in Atrial Fibrillation

      Dr. David F. Katz
      Cardiac Electrophysiology | Cardiology

      Poudre Valley Medical Group LLC

      1760 E Ken Pratt Blvd, 
      Longmont, CO 
       (2.4 miles away)
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients

      David Katz is a Cardiac Electrophysiologist and a Cardiologist in Longmont, Colorado. Dr. Katz is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Arrhythmias, Ectopic Heartbeat, Atrial Fibrillation, Cardiac Ablation, and Pacemaker Implantation. Dr. Katz is currently accepting new patients.

      Distinguished in Atrial Fibrillation

      Dr. Shane B. Rowan
      Cardiac Electrophysiology
      Distinguished in Atrial Fibrillation

      Dr. Shane B. Rowan
      Cardiac Electrophysiology

      Poudre Valley Medical Group LLC

      1760 E Ken Pratt Blvd, Suite 205 Lpmc, 
      Longmont, CO 
       (2.4 miles away)
      720-718-5280
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients

      Shane Rowan is a Cardiac Electrophysiologist in Longmont, Colorado. Dr. Rowan is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Familial Progressive Cardiac Conduction Defect, Sick Sinus Syndrome, Atrial Fibrillation, Pacemaker Implantation, and Cardiac Ablation. Dr. Rowan is currently accepting new patients.

      Advanced in Atrial Fibrillation

      Dr. Jason Hatch
      Interventional Cardiology
      Advanced in Atrial Fibrillation

      Dr. Jason Hatch
      Interventional Cardiology

      Uchealth Cardiac Rehabilitation-Longmont

      1760 E Ken Pratt Blvd Ste 205, 
      Longmont, CO 
       (3.8 miles away)
      720-718-8180
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Jason Hatch is an Interventional Cardiologist in Longmont, Colorado. Dr. Hatch is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Familial Neurocardiogenic Syncope, Atrial Fibrillation, Heart Attack, Angioplasty, and Aortic Valve Replacement.

      Experienced in Atrial Fibrillation

      Dr. Linda Backup
      Cardiology
      Experienced in Atrial Fibrillation

      Dr. Linda Backup
      Cardiology

      Longmont Clinic Lab

      1925 Mountain View Ave, 
      Longmont,, CO 
       (1.5 miles away)
      303-485-3348
      Languages Spoken:
      English
      See accepted insurances

      Linda Backup is a Cardiologist in Longmont,, Colorado. Dr. Backup is rated as an Experienced provider by MediFind in the treatment of Atrial Fibrillation. Her top areas of expertise are Sengers Syndrome, Cardiomyopathy, Familial Hypertrophic Cardiomyopathy, and Atrial Fibrillation.

      Advanced in Atrial Fibrillation

      Dr. Nima Aghili
      Cardiology | Interventional Cardiology
      Advanced in Atrial Fibrillation

      Dr. Nima Aghili
      Cardiology | Interventional Cardiology

      Colorado Heart And Vascular PC

      90 Health Park Dr, Ste 220, 
      Westminster, CO 
       (0.2 miles away)
      303-595-2727
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients

      Nima Aghili is a Cardiologist and an Interventional Cardiologist in Westminster, Colorado. Dr. Aghili is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Septal Defect (ASD), Patent Foramen Ovale, Heart Attack, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR). Dr. Aghili is currently accepting new patients.

      Advanced in Atrial Fibrillation

      Dr. Parth Makker
      Cardiology
      Advanced in Atrial Fibrillation

      Dr. Parth Makker
      Cardiology

      Colorado Heart And Vascular PC

      2030 Mountain View Ave, Ste 220, 
      Longmont, CO 
       (1.7 miles away)
      303-595-2727
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients

      Parth Makker is a Cardiologist in Longmont, Colorado. Dr. Makker is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Paroxysmal Supraventricular Tachycardia (PSVT), Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Cardiac Ablation, and Pacemaker Implantation. Dr. Makker is currently accepting new patients.

      Advanced in Atrial Fibrillation

      Dr. John Schutz
      Cardiology
      Advanced in Atrial Fibrillation

      Dr. John Schutz
      Cardiology

      Boulder Heart At Erie Medical Center

      101 Erie Pkwy, 
      Erie, CO 
       (9.2 miles away)
      303-442-2395
      Languages Spoken:
      English
      See accepted insurances

      John Schutz is a Cardiologist in Erie, Colorado. Dr. Schutz is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Coronary Heart Disease, Arrhythmias, Familial Neurocardiogenic Syncope, Atherosclerosis, and Pacemaker Implantation.

      Distinguished in Atrial Fibrillation

      Dr. Oussama Lawand
      Cardiology
      Distinguished in Atrial Fibrillation

      Dr. Oussama Lawand
      Cardiology

      Boulder Heart

      4743 Arapahoe Ave, 
      Boulder, CO 
       (12.7 miles away)
      303-442-2395
      Languages Spoken:
      English
      See accepted insurances

      Oussama Lawand is a Cardiologist in Boulder, Colorado. Dr. Lawand is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Arrhythmias, Catecholaminergic Polymorphic Ventricular Tachycardia, Pacemaker Implantation, and Cardiac Ablation.

      Experienced in Atrial Fibrillation

      Dr. Kirk E. Mitchell
      Geriatrics | Family Medicine | Internal Medicine
      Experienced in Atrial Fibrillation

      Dr. Kirk E. Mitchell
      Geriatrics | Family Medicine | Internal Medicine

      Compassionate Concierge Physicians LLC

      1551 Professional Ln, Unit 180, 
      Longmont, CO 
       (1.9 miles away)
      720-986-0850
      Languages Spoken:
      English
      See accepted insurances

      Kirk Mitchell is a primary care provider, practicing in Geriatrics and Internal Medicine in Longmont, Colorado. Dr. Mitchell is rated as an Experienced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Dementia, Alcoholic Neuropathy, Muscle Atrophy, and Dysgraphia.

      Experienced in Atrial Fibrillation

      Dr. Elizabeth S. Lycett
      Geriatrics | Internal Medicine
      Experienced in Atrial Fibrillation

      Dr. Elizabeth S. Lycett
      Geriatrics | Internal Medicine

      Boulder Community Health

      2101 Ken Pratt Blvd, Suite 104, 
      Longmont, CO 
       (2.2 miles away)
      303-442-2395
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Elizabeth Lycett is a primary care provider, practicing in Geriatrics and Internal Medicine in Longmont, Colorado. Dr. Lycett is rated as an Experienced provider by MediFind in the treatment of Atrial Fibrillation. Her top areas of expertise are Osmotic Diuresis, Hypothyroidism, Porphyria Cutanea Tarda, and Type 2 Diabetes (T2D). Dr. Lycett is currently accepting new patients.

      Advanced in Atrial Fibrillation

      Dr. Sucheta Gosavi
      Cardiology
      Advanced in Atrial Fibrillation

      Dr. Sucheta Gosavi
      Cardiology

      Lorena R. Letkomiller

      300 Exempla Cir Ste 310, 
      Lafayette,, CO 
       (10.7 miles away)
      303-689-6420
      Experience:
      36+ years
      Languages Spoken:
      English
      See accepted insurances

      Sucheta Gosavi is a Cardiologist in Lafayette,, Colorado. Dr. Gosavi has been practicing medicine for over 36 years and is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. Her top areas of expertise are Adenosine Deaminase 2 Deficiency, Familial Dilated Cardiomyopathy, Ectopic Heartbeat, and Pulmonary Veno-Occlusive Disease.

      Advanced in Atrial Fibrillation

      Dr. Jamie Doucet
      Cardiology
      Advanced in Atrial Fibrillation

      Dr. Jamie Doucet
      Cardiology

      Boulder Community Health

      4743 Arapahoe Ave Ste 201, 
      Boulder, CO 
       (12.7 miles away)
      303-702-5958
      Languages Spoken:
      English
      See accepted insurances

      Jamie Doucet is a Cardiologist in Boulder, Colorado. Dr. Doucet is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Angina, Pacemaker Implantation, and Heart Valve Repair.

      Advanced in Atrial Fibrillation

      Dr. Roy Thompson
      Cardiology
      Advanced in Atrial Fibrillation

      Dr. Roy Thompson
      Cardiology

      Boulder Community Health

      4743 Arapahoe Ave Ste 201, 
      Boulder,, CO 
       (12.7 miles away)
      303-442-2395
      Languages Spoken:
      English
      See accepted insurances

      Roy Thompson is a Cardiologist in Boulder,, Colorado. Dr. Thompson is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Atrial Fibrillation, Atherosclerosis, Coronary Heart Disease, and Angina.

      Advanced in Atrial Fibrillation

      Dr. Nelson Trujillo
      Cardiology
      Advanced in Atrial Fibrillation

      Dr. Nelson Trujillo
      Cardiology

      Boulder Heart

      4743 Arapahoe Ave, 
      Boulder,, CO 
       (12.7 miles away)
      303-442-2395
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Nelson Trujillo is a Cardiologist in Boulder,, Colorado. Dr. Trujillo is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Angina, Arrhythmias, and Pacemaker Implantation.

      Advanced in Atrial Fibrillation

      Dr. Daniel White
      Cardiology
      Advanced in Atrial Fibrillation

      Dr. Daniel White
      Cardiology

      Boulder Heart

      4743 Arapahoe Ave, 
      Boulder, CO 
       (12.7 miles away)
      303-442-2395
      Languages Spoken:
      English
      See accepted insurances

      Daniel White is a Cardiologist in Boulder, Colorado. Dr. White is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. His top areas of expertise are Coronary Heart Disease, Familial Neurocardiogenic Syncope, Arrhythmias, Cardiomyopathy, and Pacemaker Implantation.

      Showing 1-20 of 45

      Last Updated: 01/09/2026

      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 near Longmont, CO?

      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 near Longmont, CO?

      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 near Longmont, CO?

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

      Atrial Fibrillation doctor near New York, NY
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      Atrial Fibrillation doctor near Philadelphia, PA
      Atrial Fibrillation doctor near Atlanta, GA
      Atrial Fibrillation doctor near Boston, MA
      Atrial Fibrillation doctor near Dallas, TX
      Atrial Fibrillation doctor near San Jose, CA

      How does MediFind rank Atrial Fibrillation doctors near Longmont, CO?

      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 near Longmont, CO?

      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 near Longmont, CO?

      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 near Longmont, CO?

      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 near Longmont, CO?

      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 

      Read more about our Content Policy. 

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