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Services > Physician Practices > Cardiac Electrophysiology
Licking Memorial Cardiac Electrophysiology
1906 Tamarack Road
Newark, Ohio 43055
Phone: (220) 564-7780
Fax: (220) 564-7781
8:00 a.m. - 4:00 p.m. (M, W, F)
8:00 a.m. - 5:00 p.m. (T, Th)
8:00 a.m. - 12:00 Noon (F)
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Electrophysiology is the study of electrical properties in biological cells and tissues, including the heart.  Electrophysiological studies are tests that evaluate the heart’s electrical system and diagnose abnormal heart rhythms, or arrhythmia.  An electrophysiologist is a physician who is an expert in diagnosing and treating issues of the heart’s electrical system.  Conditions that an electrophysiologist treats include:
  • Atrial fibrillation (AFib)
  • Atrial flutter
  • Atrial tachycardia
  • Bradycardia
  • AV Blocks
  • Palpitations
  • Cardiac device implants
  • Implantable cardiac recorders
Physician(s)
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John J. Keller, M.D., received his medical degree from the University of Cincinnati College of Medicine.  He completed an internal medicine residency, a cardiovascular disease fellowship, and a clinical cardiac electrophysiology fellowship at The Ohio State University Medical Center.  Dr. Keller is board certified in internal medicine, cardiovascular disease, and clinical cardiac electrophysiology.