What is William Fonfeder's specialty?

William Fonfeder (NPI 1568534964) is a Medicare-billing provider whose primary specialty is Internal Medicine in Brooklyn, NY.

Where does William Fonfeder practice?

William Fonfeder practices in Brooklyn, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1568534964.

How much does Medicare pay William Fonfeder?

William Fonfeder (NPI 1568534964) received approximately $3K in total Medicare Part B payments, serving 25 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1568534964

William Fonfeder

Internal MedicineBrooklyn, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$2K

Peer benchmark

Total Medicare services vs. 7,864 Internal Medicine providers in NY — bottom quintile (cohort median 552).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where William Fonfeder'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). 36 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
George Tavoulareas Psychiatry · Santa Barbara, CA	159	432
ADVANCED MULTI DIAGNOSTIC SERVICES	133	710
ALAM, HAMID	88	185
Abdul Malik Cardiology · Brooklyn, NY	79	157
Marina Ravich Internal Medicine · Richmond Hill, NY	77	180
Bioreference Health, Llc Clinical Laboratory · Elmwood Park, NJ	73	242
Lenco Diagnostic Laboratories,inc. Clinical Laboratory · Brooklyn, NY	68	178
NPI 1225073356	53	103
ALEXIS, ELISABETH	49	86
ELSHEBINI, ISLAM	39	72
Mikhail Korogluyev Osteopathic Manipulative Medicine · Brooklyn, NY	32	199
Quality Healthcare Management Inc Clinical Laboratory · Brooklyn, NY	30	68

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