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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).

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Specialties & Research

Dr. John Lesser, MD is board certified in Internal Medicine and Cardiovascular Disease.

  • He has special expertise in 11 areas:
  • Acute Coronary Syndrome (ACS)
  • Cardiac Electrophysiology
  • Cardiovascular Disease
  • Coronary Artery Disease (CAD)
  • Echocardiography
  • Heart Block
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Hypertrophic Cardiomyopathy
  • Myocardial Infarction
  • Unstable Angina

Education & Awards

Dr. Lesser graduated from University of Florida, Gainesville. He has 2 awards.

One of America's Leading Experts on:
Hypertrophic Cardiomyopathy
Castle Connolly's Top Doctors™ (2012 - 2013)


Dr. Lesser has 7 hospital affiliations:

  • Cambridge Medical Center 
  • Hutchinson Area Health Care 

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Additional Information
Dr. John Raymond Lesser MD is a male Internist, has 30 years of experience and practices in Internal Medicine, Cardiovascular Disease, Cardiology, and Interventional Cardiology.
Where does Dr. John R. Lesser practice?
Dr. John Lesser has 9 office locations.
Dr. John Lesser practices Internal Medicine, Cardiovascular Disease, Cardiology, and Interventional Cardiology near Faribault, MN.
Additional practice locations include: Minneapolis, MN and Alexandria, MN.
See Faribault Internists and Faribault Cardiologists.