The 20 Best Atrial Fibrillation Doctors Near Me in Longmont, CO
Find the Top Atrial Fibrillation Experts and Specialists
Colorado Heart Vascular PC
Ganesh Venkataraman is a Cardiac Electrophysiologist practicing medicine in Longmont, Colorado. Dr. Venkataraman is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 25 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Heart Failure, Familial Progressive Cardiac Conduction Defect, Trabeculectomy, and Pacemaker Implantation. Dr. Venkataraman is board certified in American Board Of Internal Medicine. Dr. Venkataraman is currently accepting new patients.
Boulder Heart At Longmont
Bryan Reynolds is a Cardiologist practicing medicine in Longmont,, Colorado. Dr. Reynolds is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Atherosclerosis, Coronary Heart Disease, and Angina.
Colorado Heart Vascular PC
Parth Makker is a Cardiac Electrophysiologist practicing medicine in Longmont, Colorado. Dr. Makker is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Paroxysmal Supraventricular Tachycardia (PSVT), Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Cardiac Ablation, and Pacemaker Implantation. Dr. Makker is board certified in American Board Of Internal Medicine. Dr. Makker is currently accepting new patients.
Colorado Heart Vascular PC
Michael Ptasnik is a Cardiologist practicing medicine in Longmont, Colorado. Dr. Ptasnik is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Coronary Heart Disease, Atherosclerosis, Angina, and Mitral Valve Prolapse. Dr. Ptasnik is board certified in American Board Of Internal Medicine. Dr. Ptasnik is currently accepting new patients.
Longmont Clinic Lab
John Stathis is a Cardiologist practicing medicine in Longmont,, Colorado. Dr. Stathis is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Coronary Heart Disease, Angina, Atherosclerosis, and Atrial Fibrillation.
Poudre Valley Medical Group LLC
Ethan Ellis is a Cardiac Electrophysiologist and a Cardiologist practicing medicine in Longmont, Colorado. Dr. Ellis is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Ectopic Heartbeat, Arrhythmias, Cardiac Ablation, and Pacemaker Implantation. Dr. Ellis is currently accepting new patients.
Poudre Valley Medical Group LLC
David Katz is a Cardiac Electrophysiologist and a Cardiologist practicing medicine in Longmont, Colorado. Dr. Katz is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 24 other conditions, according to our data. His clinical expertise encompasses Ectopic Heartbeat, Arrhythmias, Atrial Fibrillation, Pacemaker Implantation, and Cardiac Ablation. Dr. Katz is currently accepting new patients.
Poudre Valley Medical Group LLC
Shane Rowan is a Cardiac Electrophysiologist practicing medicine in Longmont, Colorado. Dr. Rowan is rated as a Distinguished provider 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 Familial Progressive Cardiac Conduction Defect, Sick Sinus Syndrome, Atrial Fibrillation, Pacemaker Implantation, and Cardiac Ablation. Dr. Rowan is currently accepting new patients.
Uchealth Cardiac Rehabilitation-Longmont
Jason Hatch is an Interventional Cardiologist practicing medicine in Longmont, Colorado. Dr. Hatch is rated as an Advanced provider 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 Familial Neurocardiogenic Syncope, Atrial Fibrillation, Heart Attack, Angioplasty, and Aortic Valve Replacement.
Intermountain Health Heart & Vascular - Lafayette Clinic
Dr. Hugh Parker is a dual board-certified cardiologist with a broad clinical background and a passion for advanced cardiac imaging and complex cardiovascular care. He most recently served as both a practicing cardiologist and Assistant Professor at the University of Colorado School of Medicine, Division of Cardiology, where he specialized in general cardiology and advanced cardiac imaging—including cardiac MRI, coronary CT angiography (CTA), nuclear cardiology, echocardiography, and vascular ultrasound.Dr. Parker earned his Doctor of Medicine from Mercer University in Macon, Georgia. He completed his residency in Internal Medicine at Yale University’s Bridgeport Hospital in Connecticut and subsequently completed a fellowship in General Cardiology at the Ochsner Heart & Vascular Institute in New Orleans, Louisiana.“The origin of the word ‘doctor’ is rooted in the Latin ‘docere,’ which means to teach. While I have taught many young doctors, I feel that my greatest obligation is to teach my patients the nature of their illness, the treatments available and to help them make a truly informed decision on how to proceed.”He thrives in the face of clinical complexity and finds great fulfillment in managing challenging cases where straightforward answers are not easily found. Dr. Parker takes a thoughtful, deliberate approach to care, engaging in in-depth discussions with patients to arrive at the most appropriate and personalized course of action. His goal is to not only provide expert diagnostics and treatment, but also to partner with patients in making informed decisions about their heart health.When not working, Dr. Parker enjoys the outdoors, hiking and off-roading in the mountains, and spending time with his two young children. Dr. Parker is rated as an Experienced provider 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 Atherosclerosis, Coronary Heart Disease, Angina, and Mitral Valve Regurgitation. Dr. Parker is board certified in American Board Of Internal Medicine. Dr. Parker is currently accepting new patients.
Colorado Heart Vascular PC
David Halpin is an Interventional Cardiologist practicing medicine in Longmont, Colorado. Dr. Halpin is rated as an Experienced provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Heart Attack, Atherosclerosis, Coronary Heart Disease, and Angina. Dr. Halpin is board certified in American Board Of Internal Medicine. Dr. Halpin is currently accepting new patients.
Longmont Clinic Lab
Linda Backup is a Cardiologist practicing medicine in Longmont,, Colorado. Dr. Backup is rated as an Experienced provider by MediFind in the treatment of Atrial Fibrillation. Her clinical expertise encompasses Sengers Syndrome, Cardiomyopathy, Familial Hypertrophic Cardiomyopathy, and Atrial Fibrillation.
Intermountain Health Heart & Vascular - Lafayette Clinic
Dr. Martin Fejka received his medical degree suma cum laude from Safarik University School of Medicine in Czechoslovakia. He relocated from Europe in 1993 and completed his internal medicine residency at Saint Louis University. From Missouri, Dr. Fejka moved to Michigan, where he completed cardiovascular fellowship training at William Beaumont Hospital in Royal Oak and then an interventional cardiology fellowship at St. John Hospital in Detroit before joining SCL Physicians in 2003. Dr. Fejka is board certified in internal medicine, cardiovascular diseases and interventional cardiology by the American Board of Internal Medicine. He specializes in interventional cardiology, coronary and peripheral interventions and treatment of varicose veins and vein disease. His expertise centers on the use of various devices, angioplasty balloons, atherectomy catheters, stents and radiofrequency ablation catheters to treat patients with heart and vascular disease.Away from the hospital, Dr. Fejka enjoys hiking, skiing, traveling, reading, playing the saxophone and, most importantly, spending time with his family, including his son and daughter. Dr. Fejka is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 19 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Angina, Venous Insufficiency, Stasis Dermatitis and Ulcers, and Heart Bypass Surgery. Dr. Fejka is board certified in American Board Of Internal Medicine and American Board Of Internal Medicine. Dr. Fejka is currently accepting new patients.
Frontier Internal Medicine
John Addison is a primary care provider, practicing in Internal Medicine in Longmont, Colorado. He has been practicing medicine for over 47 years. Dr. Addison is rated as an Advanced provider 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, Dementia, Alzheimer's Disease, and Urinary Tract Infection in Children. Dr. Addison is board certified in American Board Of Internal Medicine. Dr. Addison is currently accepting new patients.
Poudre Valley Medical Group LLC
Tristan Dow is a Cardiologist and a Nuclear Medicine provider practicing medicine in Longmont, Colorado. Dr. Dow is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Angina, Heart Failure with Preserved Ejection Fraction (HFpEF), Heart Failure, Pulmonary Edema, and Pacemaker Implantation. Dr. Dow is currently accepting new patients.
Boulder Heart At Erie Medical Center
John Schutz is a Cardiologist practicing medicine in Erie, Colorado. Dr. Schutz is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Coronary Heart Disease, Familial Neurocardiogenic Syncope, Atherosclerosis, Atrial Fibrillation, and Pacemaker Implantation.
Boulder Heart
Oussama Lawand is a Cardiologist practicing medicine in Boulder, Colorado. Dr. Lawand is rated as a Distinguished provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Arrhythmias, Catecholaminergic Polymorphic Ventricular Tachycardia, Pacemaker Implantation, and Cardiac Ablation.
Boulder Community Health
Jamie Doucet is a Cardiologist practicing medicine in Boulder, Colorado. Dr. Doucet is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Coronary Heart Disease, Atherosclerosis, Angina, Pacemaker Implantation, and Heart Valve Repair.
Boulder Community Health
Roy Thompson is a Cardiologist practicing medicine in Boulder,, Colorado. Dr. Thompson is rated as an Advanced provider by MediFind in the treatment of Atrial Fibrillation. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Atherosclerosis, Coronary Heart Disease, and Angina.
Boulder Heart
Nelson Trujillo is a Cardiologist practicing medicine in Boulder,, Colorado. Dr. Trujillo is rated as an Advanced provider 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 Coronary Heart Disease, Atherosclerosis, Angina, Ectopic Heartbeat, and Pacemaker Implantation.
Last Updated: 04/28/2026

