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The physicians in our directory are members of a Children’s Health hospital medical staff or are credentialed by Children’s Health for managed care participation. Some physicians are employed by Children’s Health, some are employed elsewhere, and some maintain an independent medical practice. There is no fee for being listed in our directory. The physicians populating your search results are selected based on the criteria that you provide and are then listed alphabetically. If a physician is no longer on a Children’s Health medical staff or participating in a Children’s Health managed care agreement, he/she would not be eligible to be listed in our directory.

James Deets Daniels, MD $$

Pediatric Cardiologist

Associate Professor at UT Southwestern Medical Center

Languages Spoken:
UT Southwestern Pediatric Group


James Daniels, M.D., is a cardiac electrophysiologist at Children’s Health who specializes in evaluating and treating arrhythmias. He is an Associate Professor at UT Southwestern Medical Center.

Everyone’s heart races or feels like it “skips a beat” sometimes, but Dr. Daniels says that what may feel like a cardiac arrhythmia (heart rhythm disorder) may not be. When it is an arrhythmia, though, most aren’t dangerous if the patient lacks any other heart disease, and only a small percentage of arrhythmias are life threatening.

His current research interests include MRI-compatible implantable cardiac devices and atrial fibrillation.

Dr. Daniels earned his medical degree at UT Southwestern Medical Center. He performed both an internal medicine internship and an internal medicine residency at the University of New Mexico Health Sciences Center. He then completed two fellowships at UT Southwestern – one in clinical cardiac electrophysiology and another in cardiovascular diseases.

Dr. Daniels is board-certified in internal medicine, cardiovascular disease and clinical cardiac electrophysiology (the subspecialty focused on the heart’s electrical system). He has published a number of peer-reviewed articles and has delivered several invited lectures related to cardiac arrhythmias.

Dr. Daniels is a member of multiple professional organizations, including the American Heart Association, American College of Cardiology, Heart Rhythm Society, and the American Medical Association.

Dr. Daniels was included in D Magazine's "Best Doctors" list for 2020-2022 and 2018.

Education and Training

Medical School
University of Texas Southwestern Medical Center (2001)
University of New Mexico Health Science Center (2005), Internal Medicine
University of New Mexico Health Science Center (2004), Internal Medicine
UT Southwestern Medical Center at Dallas (2009), Interventional Cardiology
UT Southwestern Medical Center at Dallas (2008), Cardiology
Board Certification
American Board of IM/Cardiovascular Disease


Departments and Programs

  • Research Interests

    • Aldosterone antagonism to reduce myocardial fibrosis and arrhythmogenesis
    • Cosmetic pacemaker and defibrillator implantation
    • Reduction of procedural fluoroscopy (X-ray) exposure
  • Publications

    • Preventing shoulder pain after cardiac rhythm management device implantation: a randomized, controlled study.
      Daniels JD, Sun S, Zafereo J, Minhajuddin A, Nguyen C, Obel O, Wu R, Joglar JA Pacing Clin Electrophysiol 2011 Jun 34 6 672-8
    • Spironolactone therapy is associated with reduced ventricular tachycardia rate in patients with cardiomyopathy.
      Dimas V, Ayers C, Daniels J, Joglar JA, Hill JA, Naseem RH. PACE 2011 34 3 309-314
    • Electrocardiographic findings, device therapies, and comorbidities in octogenarian implantable defibrillator recipients.
      Daniels JD, Saunders J, Parvathaneni S, Byrd A, Joglar JA, Obel O J. Cardiovasc. Electrophysiol. 2010 Mar 21 3 236-41
  • Professional Activities

    • American College of Cardiology
    • American Heart Association
    • Heart Rhythm Society
  • Awards and Honors

    • D Magazine Best Doctor (2018, 2020)
    • Certificate of Recognition - University of New Mexico Hospital (2005)

Where I Provide Care: