Mark H. Schoenfeld, MD


Cardiovascular Disease, Clinical Cardiac Electrophysiology

Conditions & Treatments

Atrial Fibrillation, Cardiac Arrhythmia, Cardiac Defibrillator, Cardiomyopathy, Catheter Ablation, Electrophysiologic Studies, Pacemaker, Syncope, Ventricular Tachycardia (VT)

(203) 789-3363
Accepting New Patients


I have devoted my career to ameliorating patients' symptoms, improving their quality of life, and prolonging the lives of patients suffering from cardiac arrhythmias. My early clinical investigations into device therapy made me truly appreciate how implantable cardioverter-defibrillators could be successfully used to "defeat death" and thereby extend patients' lives and enrich the lives of their loved ones. But many patients rightly ask what is the value of life if it cannot be truly enjoyed? Indeed, with further technological advances, such as the ability to physiologically  pace the heart and provide cardiac resynchronization therapy, we have demonstrated that we may also alleviate symptoms through device therapy.Over time, I have also been involved with increasingly sophisticated pacemaker devices that can improve the quality of a patient's life, most recently those of the leadless variety. Having performed thousands of catheter ablations over the years, I have also appreciated that we can actually cure patients of certain arrhythmias, thereby improving their quality of life and usually without the need for medicines. This has been truly gratifying since there are very few medical conditions that can actually be cured, as opposed to being medically managed. By virtue of being involved in the field of cardiac electrophysiology from its earliest years, conducting clinical research and providing care to innumerable patients over decades, teaching students who share my passion, guiding clinicians through the development of international medical guidelines on how to manage such patients, and being involved in leadership positions and regulatory affairs that have allowed this field to grow and prosper, I can only marvel at where this field began.....and where it is heading. I am proud to be a member of the Yale faculty which, over the years, has made extremely important contributions to the field of cardiac electrophysiology, and will continue to do so...





Years In Practice


Affiliated With

Yale Medicine


Yale Heart and Vascular Center

175 Sherman Ave
2nd Floor
New Haven, CT 06511

Get Directions

Monday9:00 AM - 5:00 PM
Tuesday9:00 AM - 5:00 PM
Wednesday9:00 AM - 5:00 PM
Thursday9:00 AM - 5:00 PM
Friday9:00 AM - 5:00 PM
(203) 789-4081

Yale Cardiology

56 Franklin Street
Waterbury, CT 06702

Get Directions

Monday9:00 AM - 5:00 PM
Tuesday9:00 AM - 5:00 PM
Wednesday9:00 AM - 5:00 PM
Thursday9:00 AM - 5:00 PM
Friday9:00 AM - 5:00 PM
(203) 789-4081

Education & Training


Harvard Medical School


Massachusetts General Hospital


Massachusetts General Hospital


Massachusetts General Hospital

Accepted Insurance

Insurance coverage regularly changes, please contact the doctor’s office directly to verify that your specific insurance plan is accepted.

  • aetna
  • anthem bc/bs
  • berkeley care network
  • cigna healthcare
  • community care network
  • connecticare
  • corvel
  • first health network
  • focus healthcare
  • great west
  • husky
  • medicaid
  • medicare
  • multiplan
  • oxford health plans
  • railroad medicare
  • tricare/champus
  • united healthcare
  • us family health plan
  • wellcare