Kern Buckner
Chief, Division of Cardiology
Department of Medicine
Division of Cardiology
  • 5280 Top Doctors 2016 (13th year)
  • Recognized as a 5280 Top Doctor (13th year)
  • America’s Top Doctors 2015 — Castle Connolly, Medical, Ltd.
  • Recognized in America’s Top Doctors — Castle Connolly, Inc.
  • Best Doctors in America® 2015 — Best Doctors, Inc.
  • Recognized in Best Doctors in America® — Best Doctors, Inc.
  • America’s Top Doctors 2016 — Castle Connolly Medical, Ltd.
  • Special Interests

    Clinical Interests

    General Cardiology with an emphasis on dyspnea of unknown origin, human performance and exercise, intacardiac shunts and hypoxia, pulmonary hypertension, cardiopulmonary physiology in exercise and pulmonary hypertension, cardiac catheterization.


    Research Interests

    Right heart-lung coupling and physiology in human performance/exercise, and pulmonary hypertension.


    Duke University, MD
    University of North Carolina, Chapel Hill, Pre-Medicine Special Student
    University of North Carolina, Chapel Hill, BA
    University of Colorado Denver,
    University of Colorado Denver,
    University of Colorado Denver, Chief Medical Resident
    University of Colorado Denver, Division of Genetics and Cardiology Fellowship
    University of Colorado Denver, Division of Cardiology, Cardiology Fellowship

    Awards & Recognition

    2014: Best Doctors in America, Best Doctors, Inc.
    1993, 2004-2005, 2008-2012: Top Doctors in Denver
    2009: USA Today Most Influential Doctors 2009
    2006, 2008: Guide to America’s Top Cardiologists
    2006, 2008: Guide to America’s Top Physicians
    2000, 2005-2006, 2008-2012: Best Doctors in America
    1999, 2001-2002: Guide to Top Doctors

    Board Certification

    American Board of Internal Medicine
    American Board of Internal Medicine-Cardiovascular Diseases
    American Board of Internal Medicine-Interventional Cardiology
    Board of Cardiovascular Computed Tomography

    Professional Memberships

    American Heart Association
    American Society of Echocardiography
    Society of Atherosclerosis and Imaging
    Society of Cardiovascular Computed Tomography
    New York Academy of Science


    Hossack KF, Eldrige JE, Buckner JK. Comparison of acute hemodynamic effects of nitroglycerin versus diltiazem and combined acute effects of both drugs in angina pectoris. Amer J Card 1986; 58:722-726

    Lesnefsky EJ, Pacheco J, Adcock K. Buckner JK, Van Benthuysen KM. Thallium scintigraphic evidence of reversible myocardial ischemia caused by anomalous origin of the left main coronary artery from the anterior sinus of valsalva. Amer Heart J 1987; 114:896-7

    Krueger DW, Morrison DA, Buckner JK, Kelley K, Lindenfeld J. Is ST elevation the only electrocardiographic response of the ischemic right ventricle? Amer J Card 1991; 68(8):832

    Fenster BE, Freeman AM, Weinberger HD, Buckner JK.  Recurrent Transient Mid-Ventricular Ballooning. Int J Cardiol 2011; 152(2): e35-6. PMID 21112651

    Nguyen BH, Satterfield L, Kim MS, Fenster BE, Weinberger HD, Buckner JK, Freeman AM, Carroll JD. Percutaneous closure of patent foramen ovale for systemic hypoxemia: Patient characteristics and results in 104 patients. Circ 2010 Nov 23; 122(21)S1

    Hospital Affiliations

    • University of Colorado Hospital

    Academic Affiliations

    Assistant Clinical Professor of Medicine, School of Medicine

    Teaching & Professional Positions

    Medical Director, Cardiac Catheterization Laboratory
    Member, Medical Executive Committee

    Contact Information

    • Office: 877.225.5654



    • National Jewish Health Main Campus
      1400 Jackson St.
      Denver, CO 80206

    • National Jewish Health Highlands Ranch
      8671 S Quebec St, Suite 120 Highlands Ranch, CO 80130

    Patient Ratings

    The Patient Rating score is an average of all responses to care provider related questions on our independent rating system, the Press Ganey Patient Satisfaction Survey.

    Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our patient satisfaction survey.


    Recommended to others

    Explanation of problem/condition

    Shows concerns for your questions

    Includes you in decisions

    Spoke using clear language

    Amount of time spent with you

    Confidence in your doctor


    Comments are collected in our Press Ganey Patient Satisfaction Surveys. Patients are de-identified to protect confidentiality and patient privacy. Learn more about our patient satisfaction survey.

    National Jewish Health PatientMay, 2016
    I consider Kern Buckner to be a friend of mine. We enjoy talking to each other. I even give him advice!

    National Jewish Health PatientMarch, 2016
    Good! *Dr. Buckner is the best doctor! He takes the time to explain everything and is so pleasant.