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Ronald David Berger, MD PhD

Professor of Medicine
Appointment Phone


Main Location

Johns Hopkins Outpatient Center

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Out-of-State & International Patients +
Out of State Patients

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

Learn more about our out-of-state patient services »

International Patients

Call +1-410-502-7683 (7a.m. to 6p.m., EST, Mon-Fri)

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  • Professor of Medicine
  • Professor of Biomedical Engineering

Centers & Institutes

  • Atrial Fibrillation Center
  • Heart and Vascular Institute


Ablation, Arrhythmia, Atrial Fibrillation, Atrial Flutter, Atrial Tachycardia, Biventricular Pacing, Bradycardia, Cardiac Electrophysiology, Cardiovascular Disease, Catheter Ablation Therapy, Device Therapy, Electrophysiology, Epicardial Catheter Ablation, Heart Disease, Implantable Cardioverter-Defibrillator Therapy, Irregular Heartbeat, Pacemakers, Palpitations, Paroxysmal Supraventricular Tachycardia, Radiofrequency Ablation for Atrial Fibrillation, Supraventricular Tachycardia, Syncope, Tachycardias, Ventricular Tachycardia, Wolff-Parkinson-White Syndrome

Research Interests

Arrhythmia device development, Arrhythmia mechanisms


BS: Massachusetts Institute of Technology 1981 Electrical Engineering
MS: Massachusetts Institute of Technology 1983 Electrical Engineering
PhD: Massachusetts Institute of Technology 1987 Electrical Engineering
MD: Harvard 1987 Medicine

Professional Appointments:
1987-1988 Intern in Medicine, Brigham and Womens Hospital
1988-1990 Resident in Medicine, Brigham and Womens Hospital
1988-1990 Research Scientist, Harvard M.I.T. Division of H.S.T.
1990-1993 Fellow in Cardiology, Johns Hopkins University
1993-1998 Assistant Professor of Medicine, Johns Hopkins University
1996- Co-Director of Cardiac Electrophysiology, Johns Hopkins Hospital
1998-2005 Associate Professor of Medicine, Johns Hopkins University
2002-2005 Associate Professor of Biomedical Engineering, Johns Hopkins University
2005- Professor of Medicine, Johns Hopkins University
2005- Professor of Biomedical Engineering, Johns Hopkins University


  • English


Heart Rhythm Society
American Heart Association
American College of Cardiology
Institute of Electrical and Electronics Engineers

Clinical Trial Keywords

  • arrhythmia, atrial fibrillation, catheter ablation, defibrillation, ICD, cardiac resynchronization therapy
Additional Resources +
  • Education +


    • Harvard Medical School (Boston MA ) (1987)
    • Massachusetts Institute of Technology (Cambridge MA ) (1987)


    • Brigham and Women's Hospital (Boston MA ) (1990)


    • Johns Hopkins University School of Medicine (Baltimore MD ) (1993)


    • Clinical Cardiac Electrophysiology, American Board of Internal Medicine (2006)
    • Cardiovascular Disease, American Board of Internal Medicine (2004)
  • Research & Publications +

    Selected Publications

    Selected Publications (from over 140 peer-reviewed manuscripts):

    1. Berger RD. Akselrod S. Gordon D. Cohen RJ. An efficient algorithm for spectral analysis of heart rate variability. IEEE Transactions on Biomedical Engineering. 33(9):900-904, 1986

    2. Berger RD. Saul JP. Cohen RJ. Transfer function analysis of autonomic regulation. I. Canine atrial rate response. American Journal of Physiology. 256(1 Pt 2):H142-H152, 1989

    3. Berger RD. Wolff MR. Anderson JH. Kass DA. Role of atrial contraction in diastolic pressure elevation induced by rapid pacing of hypertrophied canine ventricle. Circulation Research. 77(1):163-173, 1995

    4. Berger RD. Kasper EK. Baughman KL. Marban E. Calkins H. Tomaselli GF. Beat-to-beat QT interval variability: novel evidence for repolarization lability in ischemic and nonischemic dilated cardiomyopathy. Circulation. 96(5):1557-1565, 1997

    5. Jumrussirikul P. Dinerman J. Dawson TM. Dawson VL. Ekelund U. Georgakopoulos D. Schramm LP. Calkins H. Snyder SH. Hare JM. Berger RD. Interaction between neuronal nitric oxide synthase and inhibitory G protein activity in heart rate regulation in conscious mice. Journal of Clinical Investigation. 102(7):1279-1285, 1998

    6. Atiga WL. Calkins H. Lawrence JH. Tomaselli GF. Smith JM. Berger RD. Beat-to-beat repolarization lability identifies patients at risk for sudden cardiac death. Journal of Cardiovascular Electrophysiology. 9(9):899-908, 1998

    7. Atiga WL. Fananapazir L. McAreavey D. Calkins H. Berger RD. Temporal repolarization lability in hypertrophic cardiomyopathy caused by beta-myosin heavy-chain gene mutations. Circulation. 101(11):1237-1242, 2000

    8. Hay I. Melenovsky V. Fetics BJ. Judge DP. Kramer A. Spinelli J. Reister C. Kass DA. Berger R. Acute effects of right-left heart sequential cardiac resynchronization in patients with heart failure, chronic atrial fibrillation, and AV nodal block. Circulation 110:3404-3410, 2004

    9. Jayam V. Zviman M. Jayanti V. Roguin A. Halperin H. Berger RD. Internal defibrillation with minimal skeletal muscle activation: A new paradigm towards painless defibrillation. Heart Rhythm 2:1108-13, 2005

    10. Jayanti V, Zviman MM, Nazarian S, Halperin HR, Berger RD. Novel Electrode Design for Potentially Painless Internal Defibrillation Also Allows for Successful External Defibrillation. J Cardiovasc Electrophysiol. 18:1095-1100, 2007

  • Academic Affiliations & Courses +
  • Activities & Honors +


    1976 National Merit Finalist
    1979 Elected to Eta Kappa Nu, M.I.T.
    1980 Elected to Tau Beta Pi, M.I.T.
    1986-1987 Whitaker Health Sciences Fellow
    1990 Diplomate, American Board of Internal Medicine
    1993 Diplomate, Cardiovascular Medicine
    1996 Diplomate, Clinical Cardiac Electrophysiology
    1996-2001 NIH FIRST Award
    1996-1998 Johns Hopkins Solo Cup Clinician Scientist Award
    2001-2004 Frank T. McClure Fellow
    2002-2006 AHA Established Investigator

    Professional Activities

    1. Director of training in Clinical Cardiac Electrophysiology at Johns Hopkins
    2. Developed electrocardiographic analysis techniques for arrhythmia risk stratification
    3. Developing new devices and systems for treating cardiac arrhythmias
  • Videos & Media +
  • Events +
  • Contact & Locations +


    Johns Hopkins Outpatient Center
    601 N. Caroline Street
    Baltimore, MD 21287
    Phone: 410-614-2751
    Appointment Phone: 443-997-0270
    Fax: 410-502-4854
    Location Map


    • Medicine - Electrophysiology

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