James Daniels, M.D.
Associate Professor

James Daniels, M.D., is an Associate Professor in the Department of Internal Medicine at UT Southwestern Medical Center, and a member of its Division of Cardiology. A specialist in cardiac arrhythmias, he also leads the UT Southwestern’s Pacemaker and Defibrillator Clinic.

Originally from New Jersey, he holds bachelor's degrees in cell biology and in chemistry, both earned with distinction and honors from the University of Kansas in Lawrence. He received his medical degree from UT Southwestern, and completed internal medicine residency training at the University of New Mexico Health Sciences Center in Albuquerque, where he served as Chief Resident. He then obtained advanced training through fellowship programs in cardiovascular diseases and in cardiac electrophysiology at UT Southwestern.

Board certified in internal medicine, cardiovascular disease, and clinical cardiac electrophysiology, he joined the UT Southwestern faculty in 2009.

In addition to his patient care responsibilities, Dr. Daniels frequently lectures UT Southwestern’s cardiology, electrophysiology, and internal medicine trainees. His current research interests include MRI-compatible implantable cardiac devices and atrial fibrillation.

Dr. Daniels has published a number of peer-reviewed articles and delivered several invited lectures related to cardiac arrhythmias. He serves as an ad hoc reviewer for publications that include the Journal of Cardiovascular Electrophysiology, Journal of Investigative Medicine, and American Journal of Cardiology.

Dr. Daniels is an active member of several 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 2022, 2021, 2020, and 2018.

Personal Note

Dr. Daniels and his wife, a dermatologist, have three children.

Medical School

UT Southwestern Medical School (2001)

Residency

University of New Mexico Health Science Center (2004), Internal Medicine

Residency

University of New Mexico Health Science Center (2005), Internal Medicine

Fellowship

UT Southwestern Medical Center (2008), Cardiovascular Disease

Fellowship

UT Southwestern Medical Center (2009), Cardiac Electrophysiology

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

Featured 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

• Fellow
  American College of Cardiology (2009)
• Fellow
  Heart Rhythm Society (2009)
• Certificate of Recognition
  University of New Mexico Hospital (2005)

• American College of Cardiology
• American Heart Association
• Heart Rhythm Society