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Saman Nazarian, MD

Director, Ventricular Arrhythmia Ablation Service
Associate Professor of Medicine

See Research on Pubmed

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Main Location

Johns Hopkins Heart and Vascular Institute

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Call 410-464-6641 (8a.m. to 6p.m., EST, Mon-Fri)

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Call +1-410-502-0773 (7a.m. to 6p.m., EST, Mon-Fri)

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  • Director, Ventricular Arrhythmia Ablation Service
  • Associate Professor of Medicine

Centers & Institutes

  • Atrial Fibrillation Center
  • Heart and Vascular Institute


Ablation, Arrhythmia, Atrial Fibrillation, Atrial Flutter, Atrial Tachycardia, Biventricular Pacing, Bradycardia, Cardiac Electrophysiology, Cardiac Sarcoidosis, Cardiology, Cardiomyopathy, Cardiovascular Disease, Cardiovascular MRI, Catheter Ablation Therapy, Defibrillators, Electrophysiology, Epicardial Catheter Ablation, Heart Disease, Implantable Cardioverter-Defibrillator Therapy, Inherited Arrhythmia Disorders, Irregular Heartbeat, Long QT Syndrome, Magnetic Resonance Imaging, MRI for Patients with Implanted Cardiac Pacemakers and Defibrillators, Muscular Myotonic Dystrophy, Pacemakers, Pacing, Palpitations, Paroxysmal Supraventricular Tachycardia, Radiofrequency Ablation for Atrial Fibrillation, Sudden Cardiac Death, Supraventricular Tachycardia, Ventricular Arrhythmias, Ventricular Tachycardia, Wolff-Parkinson-White Syndrome

Research Interests

New Technologies for Catheter Ablation of Cardiac Arrhythmia; Applications of Advanced Imaging Modalities in Arrhythmia Management


Dr. Nazarian is a graduate of Stanford University School of Medicine, the Peter Bent Brigham Internal Medicine, and the Johns Hopkins University Cardiovascular Medicine and Clinical Cardiac Electrophysiology programs. During the past two years he has received the Richard S. Ross Clinician Scientist and the Johns Hopkins Clinical Research Scholars Awards. His clinical interests include the care of patients with atrial and ventricular arrhythmia, cardiomyopathy, and implantable cardiac devices. Dr. Nazarian performs procedures including implantation of permanent pacemakers and implantable cardioverter defibrillators, and catheter ablation for atrial and ventricular arrhythmias.


  • English
  • Farsi


American Heart Association
American College of Cardiology
Heart Rhythm Society

Clinical Trial Keywords

  • Implantable Cardioverter Defibrillator
  • Atrial Fibrillation

Additional Resources

Additional Resources +
  • Education +


    • Stanford University School of Medicine (Stanford CA ) (1999)


    • Brigham and Women's Hospital / Internal Medicine (Boston MA ) (2002)


    • Johns Hopkins University School of Medicine / Cardiac Electrophysiology (Baltimore MD ) (2007)
    • Johns Hopkins University School of Medicine / Cardiology (Baltimore MD ) (2005)


    • American Board of Internal Medicine / Clinical Cardiac Electrophysiology (2008)
    • American Board of Internal Medicine / Cardiovascular Disease (2006)
  • Research & Publications +

    Selected Publications View all on PubMed

    Nazarian, S.; Knight, BP; Dickfeld; T.L; Zviman, M.M; Jayanti, V.B.; Amundson, D.; Hanlin, J.; Castleberry, J.; Smith, M.F.; Blankenship, L.; Halperin, H.R.; Ferguson, T.B.; Berger, R.D.; Direct Visualization of Coronary Sinus Ostium and Branches with a Flexible Steerable Fiberoptic Infrared Endoscope, Heart Rhythm, 2: 844-848, 2005.

    Nazarian, S.; Maisel, W.H.; Miles, J.S.; Tsang, S.; Stevenson, L.W.; Stevenson, W.G.; Impact of Defibrillators in Advanced Heart Failure, American Heart Journal, 150(5): 955-60, November 2005.

    Nazarian, S.; Bluemke, D.A.; Lardo, A.C.; Zviman, M.M.; Watkins, S.P.; Dickfeld, T.L.; Meininger, G.R.; Roguin, A.; Calkins, H.; Tomaselli, G.F.; Weiss, R.G.; Berger,R.D.; Lima, J.A.C.; Halperin, H.R.; Magnetic Resonance Assessment of the Substrate for Inducible Ventricular Tachycardia in Non-Ischemic Cardiomyopathy, Issue Highlights, Circulation, 112(18): 2821-5, November 1, 2005.

    Cheema, A.; Vasamreddy, C.R.; Dalal, D.; Marine, J.E.; Dong, J.; Henrikson, C.A.; Spragg, D.; Cheng, A.; Nazarian, S.; Sinha, S.; Halperin, H.; Berger, R.; Calkins. H. Long-term single procedure efficacy of catheter ablation of atrial fibrillation. Journal of Cardiovascular Electrophysiology, 2006 Apr; 15(3):145-55.

    Nazarian, S.; Roguin, A.; Zviman, M.M.; Lardo, A.C.; Dickfeld, T.L.; Calkins, H.; Berger, R.D.; Bluemke, D.A.; Halperin, H.R.; Clinical Utility and Safety of a Protocol for Non-Cardiac and Cardiac Magnetic Resonance Imaging of Patients with Permanent Pacemakers and Implantable Cardioverter Defibrillators at 1.5 Tesla, Issue Highlights, Circulation, 2006 Sep; 114:1277-1284.

    Cheema, A.; Dong, J.; Dalal, D.; Marine, J.E.; Henrikson, C.A.; Spragg, D.; Cheng, A.; Nazarian, S.; Bilchick, K.; Sinha, S.; Scherr, D.; Almasry, I.; Halperin, H.; Berger, R.; Calkins, H.; Incidence and Time Course of Early Recovery of Pulmonary Vein Conduction after Catheter Ablation of Atrial Fibrillation, J Cardiovasc Electrophysiol. May 2007; 18: 1-5.

    Jayanti, V.; Zviman, M.M.; Nazarian, S.; Halperin, H.R.; Berger, R.D.; Novel electrode design for potentially painless internal defibrillation also allows for successful external defibrillation. J Cardiovasc Electrophysiol. 2007 Sep;18(10):1095-100.

    Dong, J.; Dalal, D.; Scherr, D.; Cheema, A.; Nazarian, S.; Bilchick, K.; almasry, A.; Cheng, A.; Henrikson, C.A.; Dpragg, D, Marine, J.E.; Berger, R.D.; Calkins, H.; Impact of heart rhythm status on registration accuracy of the left atrium for catheter ablation of atrial fibrillation. J Cardiovasc Electrophysiol. 2007 Sep 11

    Ashikaga H.; Sasano, T.; Dong, J.; Zviman, M.M.; Evers, R.; Hopenfeld, B.; Castro, V.; Helm, R.H.; Dickfeld, T.; Nazarian, S.; Donahue, J.K.; Berger, R.D.; Calkins, H.; Abraham, M.R.; Marban, E.; Lardo, A.C.; McVeigh, E.R.; Halperin, H.R.; Magnetic resonance based anatomical analysis of scar-related ventricular tachycardia: Implications for catheter ablation. Circ Res. 2007 Oct 4

    Cheng, A.; Nazarian, S.; Spragg, D.D.; Bilchick, K.; Tandri, H.; Mark, L.; Halperin, H.R.; Calkins, H.; Berger, R.D.; Henrikson, C.A.; Effects of surgical and endoscopic electrocautery on modern day permanent pacemaker and implantable cardioverter-defibrillator systems. Pacing Clin Electrophysiol. 2008 Mar;31(3):344-50.

    Nazarian, S.; Kolandaivelu, A.; Zviman, M.M.; Meininger, G.R.; Kato, R.; Susil, R.C.; Roguin, A.; Dickfeld, T.L.; Ashikaga, H.; Calkins, H.; Berger, R.D.; Bluemke, D.A.; Lardo, A.C.; Halperin, H.R.; Feasibility of Real-Time Magnetic Resonance Imaging for Catheter Guidance in Electrophysiology Studies. Circulation. 2008 Jul 15;118(3):223-9.

    Nazarian, S.; Kantsevoy, S.V.; Zviman, M.M.; Matsen, F.A. III; Calkins, H.; Berger, R.D.; Halperin, H.R.; Feasibility of endoscopic guidance for nonsurgical transthoracic atrial and ventricular epicardial ablation. Heart Rhythm 2008;5:11151119.

    Scherr, D.; Dalal, D,; Cheema, A.; Nazarian, S.; Almasry, I.; Bilchick, K.; Cheng, A.; Henrikson, C.A.; Spragg, D.; Marine, J.E.; Berger, R.D.; Calkins, H.; Dong, J.; Long- and Short-Term Temporal Stability of Complex Fractionated Atrial Electrograms in Human Left Atrium During Atrial Fibrillation. J Cardiovasc Electrophysiol. 2008 Sep 3. Electronic Publication Ahead of Print.

    Scherr, D.; Dalal, D.; Chilukuri, K.; Dong, J.; Spragg, D.; Henrikson, C.A.; Nazarian, S.; Cheng, A.; Berger, R.D.; Abraham, T.P.; Calkins, H.; Marine, J.E.; Incidence and Predictors of Left Atrial Thrombus Prior to Catheter Ablation of Atrial Fibrillation. J Cardiovasc Electrophysiol. 2008 Oct 22. Electronic Publication Ahead of Print.

  • Academic Affiliations & Courses +
  • Activities & Honors +


    1996 - Medical Scholars Research Fellowship, Stanford University
    2003 - Ruth L. Kirschstein National Research Service Award, National Institutes of Health
    2004 - Melvin Judkins Young Clinical Investigator Award Finalist, American Heart Association
    2007 - Richard S. Ross Clinician Scientist Award, Johns Hopkins University
    2008 - PJ Schafer Memorial Research Award, PJ Schafer Fund
    2008 - Clinical Research Scholars Faculty Award, National Institutes of Health
    2010 - National Institutes of Health Mentored Patient-Oriented Research Career Development Award
  • Videos & Media +


    Meet our Experts - Dr. Saman Nazarian

    Dr. Nazarian is the Director of the Ventricular Tachycardia Ablation Service whose clinical practice focuses on electrophysiology and the treatment of patients with rapid ventricular heart rates.

    Ablation Treatment for Triggered Ventricular Fibrillation at Johns Hopkins

    After an irregular heart rhythm struck out of the blue, James Cromwell made a dramatic comeback.

    Video Links

  • Events +
  • Contact & Locations +


    Johns Hopkins Heart and Vascular Institute
    600 N. Wolfe Street
    The Johns Hopkins Hospital
    Baltimore, MD 21287
    Phone: 410-614-2751
    Appointment Phone: 443-997-0270
    Location Map
    Johns Hopkins Outpatient Center
    601 N. Caroline Street
    Baltimore, MD 21287
    Phone: 410-955-9444
    Appointment Phone: 443-997-0270
    Fax: 410-955-4854
    Location Map


    • Medicine - Cardiology

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