Browse Health
Internist, Cardiologist (heart)
45 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

  • Currently 4 of 4 stars
Patient comments (0)

The overall average patient rating of Dr. Lon Castle is Excellent. Dr. Castle has been reviewed by 2 patients who have provided 0 comments. The rating is 4 out of 4 stars.

Specialties & Research

Dr. Lon Castle, MD is board certified in Internal Medicine and Cardiovascular Disease.

  • He has special expertise in 20 areas:
  • Acute Coronary Syndrome (ACS)
  • Ambulatory Care
  • Arrhythmogenic Right Ventricular Dysplasia
  • Atrial Fibrillation
  • Cardiac Arrhythmias
  • Cardiovascular Disease
  • Catheter Ablation
  • Electric Countershock (Cardioversion)
  • Fainting (Syncope)
  • Heart Block
  • Heart Diseases
  • High Blood Pressure (Hypertension)
  • Holter monitoring
  • Long QT Syndrome (Long QT Interval Syndrome)
  • Sudden Cardiac Death
  • Supraventricular Tachycardia
  • Unstable Angina
  • Ventricular Fibrillation
  • Ventricular Tachycardia
  • Wolff-Parkinson-White Syndrome

Education & Awards

Dr. Castle graduated from Temple University Physicians, Philadelphia.


Dr. Castle has 12 hospital affiliations:

  • EMH Regional Medical Center 
  • Southwest General Health Center 


  • English
  • Spanish

> > > > Dr. Lon Castle, MD

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Additional Information
Dr. Lon Wayne Castle MD is a male Internist, has 45 years of experience and practices in Internal Medicine and Cardiovascular Disease.
Where does Dr. Lon W. Castle practice?
Dr. Lon Castle has 7 office locations.
Dr. Lon Castle practices Internal Medicine and Cardiovascular Disease near Avon, OH.
Additional practice locations include: Westlake, OH and Cleveland, OH.
See Avon Internists and Avon Cardiologists.