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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:

View the full profile to get information on:

  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.


Dr. Fleszler has 22 hospital affiliations:

  • Lehigh Valley Hospital - Muhlenberg 
  • Lehigh Valley Hospital 


  • Spanish
  • French
  • English

> > > > 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 10 office locations.
Dr. Frederick Fleszler practices Nephrology near Allentown, PA.
Additional practice locations include: Fountain Hill, PA and Lehighton, PA.
See Allentown Nephrologists.