Cardiovascular Medicine

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MCW Arrhythmia Program
Expert Care for Irregular Heart Rhythms

A team of physicians from multiple specialty areas care for arrhythmia patients at The Medical College of Wisconsin. The multidisciplinary team includes board-certified electrophysiologists, cardiac surgeons and other heart and vascular specialists. Their combined skills and experience make it possible to successfully treat even the most complex cases of arrhythmia. These cases might include patients who have complicated conditions with multiple diagnoses.

MCW Electrophysiology Physicians: 

Marcie Berger, MD

Evgueni Fayn, MD,FACC


James A. Roth, MD

Jason C. Rubenstein, MD, FACC, FHRS 


Dalip Singh, MD


MCW Electrophysiology Nurse Practitioners: 

Leah DeMares, RN, APNP

Judith Fox, MS, APNP, RN


Complete Diagnostic Capabilities

The Medical College of Wisconsin’s Heart and Vascular Center offers the full spectrum of state-of-the-art diagnostic tests, including electrophysiology studies, cardiac MRI, genetic testing, event monitors and tilt table tests. 

The Medical College of Wisconsin also offers specialized protocols for performing MRI scans on patients with both MRI-compatible as well as the older, non-MRI compatible ICDs and pacemakers.  Call 414-777-1690 to order or schedule an MRI scan.


Comprehensive Treatment Options


The most advanced and effective treatment options are available through the Arrhythmia Program at Froedtert & The Medical College of Wisconsin, including:


  • Catheter ablation and cryoballoon ablation of atrial fibrillation


  • Pacemaker, Cardiac revascularization therapy (CRT)Implantable cardioverter defibrillator (ICD), Implantable loop recorder (ILR)


  • Surgical CryoMaze and maze procedures


Click HERE to view an interview with Dr. Berger on the treatment options for atrial fibrillation.




Research Leaders

As the region's only academic electrophysiology group, the MCW Arrhythmia Clinic Physicians conduct and participate in local and national research studies and clinical trials related to arrhythmia and other heart and vascular conditions. If you are interested in participating in a trial, or referring a patient for one, please call 414-955-6777.

Actively Recruiting Electrophysiology Trials:

MagnaSafeDetermining the Risks of Magnetic Resonance Imaging in the Presence of Pacemakers and Implantable Cardioverter Defibrillators; NCT00907361

Adenosine AFIB: Validation of the Durability of the Adenosine Effect in Verification of Pulmonary Vein Isolation; NCT01590875

SAMURAI: ImageReady™ MR Conditional Pacing System SAMURAI Clinical Study; NCT01781078


Electrophysiology Education

The MCW Electrophysiology group is pleased to announce the initiation of a ACGME-certified electrophysiology fellowship, starting July 2013.  More details are available on the EP fellowship webpage.

MCW Ventricular Tachycardia Symposium 2013:  This is a one-day symposium on Ventricular Tachycardia, with a focus on catheter (endocardial and epicardial) ablation treatment of VT. It features nationally and internationally recognized experts on these topics. There will also be a hands-on, guided pig-heart dissection with a focus on ablation-related cardiac anatomy.


Expert Care for All Types of Arrhythmia Conditions
For more information, please visit the FH/MCW Arrhythmia Program site.

To transfer an Arrhythmia patient or consult with a specialist: Call the Access Center at 414-805-4700 or 877-804-4700. Nurses are available 24 hours a day, seven days a week. This number is for physicians and staff only.  Patients can call 1-800-DOCTORS to make an appointment in the Arrhythmia clinic.



Patient Education Videos (by the EP physicians):



Dr. Berger:


Atrial Fibrillation


What are the risk factors associated with implantable devices?


Irregular Heart Rhythms


When should people diagnosed with arrhythmia get a second opinion? 


What is a heart arrhythmia?


What are the risks of not treating arrhythmia and how can it affect my health?


How does the Arrhythmia Program staff work with my primary physician?


What are arrhythmia symptoms and when should you seek medical attention?



Dr. Fayn:


What is an electrocardiogram (EKG, ECG)?


What is cardioversion treatment?


What is an electrophysiologist?


What are the various causes of an arrhythmia?


Will physical activity be limited after being treated for arrhythmia? 


Who is at a high risk for developing an arrhythmia?


What are the advantages of being treated at an academic medical center?



Dr. Roth:


Atrial Fibrillation


Do genetic factors affect the risk of having an arrhythmia?


How will arrhythmia treatment affect an exercise routine? 


What is an echocardiogram?


What other types of specialists help treat arrhythmia?


Can treatment be done in an outpatient setting or is a hospital stay required? 


When is a pacemaker used to treat an irregular heartbeat and how is it implanted?



Dr. Rubenstein:


Once an arrhythmia is treated, how often will it reoccur? 


What are the various methods for treating arrhythmia?


What are the different types of ablation treatment?


Can an arrhythmia ever be cured?


What is bradycardia?


What is an electrophysiology study (EP study)?


Are there clinical trials to improve arrhythmia diagnosis and treatment? 


When is a defibrillator used for treatment and how is it implanted?


What type of equipment and tests are used to detect arrhythmia?


CBS interview with Dr. Rubenstein on MRIs and pacemakers 2/5/14



Dr. Singh:


When should someone be tested for an inherited cardiomyopathy condition?


What is tachycardia?


What are catheter and cryoballoon ablations?


What other types of implantable devices are used to treat an irregular heartbeat?
© 2014 Medical College of Wisconsin
Page Updated 02/05/2014