What is William Mazzei's specialty?

William Mazzei (NPI 1972586501) is a Medicare-billing provider whose primary specialty is Family Practice in Deerfield Beach, FL.

Where does William Mazzei practice?

William Mazzei practices in Deerfield Beach, FL, based on the location reported in the CMS Medicare provider datasets for NPI 1972586501.

How much does Medicare pay William Mazzei?

William Mazzei (NPI 1972586501) received approximately $612K in total Medicare Part B payments, serving 166 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1972586501

William MazzeiM.D.

Family PracticeDeerfield Beach, FLI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

674

Unique beneficiaries

—

Total services

1,218

Distinct HCPCS

Medicare payment

$62K

Peer benchmark

Total Medicare services vs. 4,914 Family Practice providers in FL — above median (cohort median 682).

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 · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where William Mazzei'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). 4 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Roy Musoff Internal Medicine · Delray Beach, FL	82	186
DELRAY MEDICAL CENTER, INC.	42	90
Laboratory Corporation Of America Clinical Laboratory · Tampa, FL	18	28
M & N PROFESSIONAL SERVICES HOME HEALTH CARE INC.	12	12

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