What is Frederick Fleszler's specialty?

Frederick Fleszler (NPI 1588758353) is a Medicare-billing provider whose primary specialty is Nephrology in Allentown, PA.

Where does Frederick Fleszler practice?

Frederick Fleszler practices in Allentown, PA, based on the location reported in the CMS Medicare provider datasets for NPI 1588758353.

How much does Medicare pay Frederick Fleszler?

Frederick Fleszler (NPI 1588758353) received approximately $122K in total Medicare Part B payments, serving 457 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1588758353

Frederick FleszlerMD

NephrologyAllentown, PAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

672

Unique beneficiaries

—

Total services

1,560

Distinct HCPCS

Medicare payment

$115K

Peer benchmark

Total Medicare services vs. 452 Nephrology providers in PA — above median (cohort median 1,017).

PRESCRIBING · PART D · 2024

Total Rx claims

1,377

Beneficiaries

—

Total drug cost

$113K

Distinct drugs

Brand share

10.6%

Top prescribed drugs

Amlodipine Besylate187 claims

Calcitriol150 claims

Lisinopril123 claims

Losartan Potassium114 claims

Valsartan73 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$26

Payment records

By payment type

Food and Beverage$26

Top paying entities

Food and Beverage$26

REFERRAL NETWORK

Where Frederick Fleszler's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 154 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
LEHIGH VALLEY HOSPITAL	299	995
Benjamin Wilcox Nephrology · Allentown, PA	120	656
Shawn Hazlett Nephrology · Allentown, PA	108	317
Nelson Kopyt Nephrology · Allentown, PA	98	491
Robert Rienzo Diagnostic Radiology · Allentown, PA	96	242
Bret Kricun Diagnostic Radiology · Philadelphia, PA	93	252
Christopher Brown Diagnostic Radiology · Allentown, PA	89	243
James Newcomb Interventional Radiology · Allentown, PA	82	181
Spectra East, Inc. Clinical Laboratory · Rockleigh, NJ	77	486
Wen Young Diagnostic Radiology · Allentown, PA	75	172
Kenneth Kurtz Diagnostic Radiology · Allentown, PA	69	157
GOLDNER, DAVID	65	151

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events