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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).

Learn more about Dr. Frederick Fleszler:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Frederick Fleszler is Excellent. Dr. Fleszler has been reviewed by 3 patients who have provided 0 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Frederick Fleszler, MD is board certified in Nephrology.

  • He has special expertise in 2 areas:
  • AIDS/HIV (Acquired Immunodeficiency Syndrome)
  • Infectious Disease

Education & Awards

Dr. Fleszler graduated from Universidad Central De Venezuela - Jose Maria Vargas, Caracas. He has 1 awards.

Castle Connolly's Top Doctors™ (2013)


Dr. Fleszler has 22 hospital affiliations:

  • Lehigh Valley Hospital - Muhlenberg 
  • Lehigh Valley Hospital 


  • English
  • French
  • Spanish

> > > > Dr. Frederick Fleszler, MD

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Additional Information
Dr. Frederick S Fleszler MD is a male Nephrologist, has 12 years of experience and practices in Nephrology.
Where does Dr. Frederick S. Fleszler practice?
Dr. Frederick Fleszler has 1 office location.
Dr. Frederick Fleszler practices Nephrology near Allentown, PA.
See Allentown Nephrologists.