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Dr. Frederick Fleszler, MD

Dr. Frederick Fleszler, MD

Allentown, PA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Fleszler, Nephrologist in Allentown, PA?

    Dr. Frederick Fleszler, MD is a Nephrologist, who primarily practices in Allentown, PA with 2 additional practice locations. Dr. Fleszler graduated from Universidad Central De Venezuela Luis Razetti, Escuela De Medicine. Dr. Fleszler is fluent in English, French, and Spanish, and is currently seeing new patients. Dr. Fleszler’s practice accepts Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Fleszler’s office at (610) 432-4529.

    What are Areas of Expertise for Dr. Fleszler?

    Dr. Frederick Fleszler, MD is a highly-rated, board-certified Nephrologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Fleszler empowers patients to confidently navigate their health journey, specializing in Kidney Disease-Acute, Kidney Failure, and comprehensive wellness support. Serving the Allentown, PA community, Dr. Fleszler is dedicated to enhancing lives through expert, patient-centered care.

    Where did Dr. Fleszler go to medical school and complete their residency?

    • Medical School: Universidad Central De Venezuela Luis Razetti, Escuela De Medicine | Universidad Central De Venezuela Luis Razetti, Escuela De Medicine

    What languages does Dr. Fleszler speak?

    Dr. Fleszler and their clinical team can communicate with patients in the following languages:

    • English

    • French

    • Spanish

    What conditions does a Nephrologist like Dr. Fleszler typically treat?

    As a Nephrologist, Dr. Fleszler diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Fleszler. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.

    Also known as:

    • End-Stage Kidney Disease
    • Chronic Kidney Disease from High Blood Pressure
    • Chronic Kidney Disease Stage 3b
    • Chronic Kidney Disease, Stage 4 (Severe)
    • Chronic Kidney Disease, Stage 3a
    • End-Stage Kidney Disease from High Blood Pressure
    • Kidney Failure
    • Chronic Kidney Disease (CKD)
    • Helping Your Child Adapt to Life with Chronic Kidney Disease
    • Chronic Kidney Disease
    • High Blood Pressure
    • ESRD
    • End-Stage Renal Failure
    • Hypertensive Chronic Kidney Disease
    • High Blood Pressure Kidney Disease
    • Hypertension-Related Kidney Disease
    • CKD Stage 3b
    • Moderate Chronic Kidney Disease
    • CKD Stage 4
    • Severe Chronic Kidney Disease
    • CKD Stage 3a
    • Hypertensive End-Stage Renal Disease
    • Kidney Failure due to High Blood Pressure
    • Stage 5 CKD from Hypertension

    ICD-10 Codes:

    • N186: End stage renal disease
    • I129: Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
    • N1832: Chronic kidney disease, stage 3b
    • N184: Chronic kidney disease, stage 4 (severe)
    • N1831: Chronic kidney disease, stage 3a
    • I120: Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease

    Also known as:

    • Acute Kidney Failure
    • Kidney Failure
    • Acute Renal Failure
    • Sudden Kidney Failure

    ICD-10 Codes:

    • N179: Acute kidney failure, unspecified

    Also known as:

    • Low Sodium Levels
    • Fluid and Electrolyte Balance
    • Sodium
    • Hyponatremia
    • Low Blood Sodium
    • Sodium Deficiency

    ICD-10 Codes:

    • E871: Hypo-osmolality and hyponatremia

    What procedures does a Nephrologist like Dr. Fleszler typically perform?

    As a Nephrologist, Dr. Fleszler performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Fleszler. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.

    Also known as:

    • Plasma Exchange (Plasmapheresis)
    • Therapeutic Plasmapheresis
    • Plasma Pheresis
    • Blood Plasma Treatment

    CPT Codes:

    • 36514: Therapeutic apheresis; for plasma pheresis

    Does Dr. Fleszler accept my insurance?

    Dr. Fleszler accepts most major insurance plans. Important: Please call our office at (610) 432-4529 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Fleszler accept in Allentown, PA?

    Dr. Fleszler in Allentown, PA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • CVS Health (formerly Aetna)

    • Highmark Health

    • Humana

    • Independence Health Group

    • Medicare

    • Risant Health

    • State of Pennsylvania

    • UnitedHealth Group

    • Unknown

    • UPMC Health System

    View All Insurances

    Where is Dr. Fleszler's office located?

    Dr. Frederick Fleszler's Primary Practice

    1230 S Cedar Crest Blvd Ste 301

    Allentown, PA 18103

    (610) 432-4529

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    Dr. Frederick Fleszler's Practice 2

    2014 City Line Rd Ste 103

    Bethlehem, PA 18017

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    Dr. Frederick Fleszler's Practice 3

    292 E Brown St

    East Stroudsburg, PA 18301

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    What is Dr. Fleszler's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Fleszler's National Provider Identifier (NPI) number is 1588758353.

    What common questions do patients ask about Dr. Fleszler?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Fleszler

    What is Dr. Frederick Fleszler's specialty?

    Dr. Fleszler is a Nephrologist near Allentown, PA.

    What does a Nephrologist do?

    An internist who manages disorders related to the kidneys, including high blood pressure, fluid and mineral balance, and dialysis for waste removal when kidney function is impaired. This specialist also collaborates with surgeons regarding kidney transplantation.

    Is this Dr. Frederick Fleszler affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Fleszler is affiliated with Lehigh Valley Health Network– Cedar Crest which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    When to see a Nephrologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Nephrologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is Frederick Fleszler accepting new patients in Allentown, PA?

    Yes, Dr. Frederick Fleszler is accepting new patients at this time.

    Does Dr. Frederick Fleszler offer online booking?

    Please contact Dr. Fleszler's office at (610) 432-4529 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Frederick Fleszler?

    Please contact Dr. Fleszler's office at (610) 432-4529 for information regarding telehealth appointment availability or for scheduling assistance.

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