What is Lazar Greenfield's specialty?

Lazar Greenfield (NPI 1841286994) is a Medicare-billing provider whose primary specialty is Neurology in Farmington, CT.

Where does Lazar Greenfield practice?

Lazar Greenfield practices in Farmington, CT, based on the location reported in the CMS Medicare provider datasets for NPI 1841286994.

How much does Medicare pay Lazar Greenfield?

Lazar Greenfield (NPI 1841286994) received approximately $23K in total Medicare Part B payments, serving 161 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1841286994

Lazar GreenfieldM.D., PH.D.

NeurologyFarmington, CTI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

177

Unique beneficiaries

—

Total services

220

Distinct HCPCS

Medicare payment

$17K

Peer benchmark

Total Medicare services vs. 263 Neurology providers in CT — below median (cohort median 349).

PRESCRIBING · PART D · 2024

Total Rx claims

890

Beneficiaries

—

Total drug cost

$122K

Distinct drugs

Brand share

8.4%

Top prescribed drugs

Levetiracetam159 claims

Oxcarbazepine55 claims

Gabapentin53 claims

Divalproex Sodium51 claims

Lamotrigine50 claims

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 Lazar Greenfield'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). 26 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
UNIVERSITY OF ARKANSAS FOR MEDICAL SCIENCES	242	759
Ryan Fitzgerald Diagnostic Radiology · Little Rock, AR	62	143
KENNEY, PHILIP	52	161
Lance Runion Diagnostic Radiology · Little Rock, AR	45	113
Rohan Samant Diagnostic Radiology · Houston, TX	42	105
Manoj Kumar Diagnostic Radiology · San Antonio, TX	36	70
Bashir Shihabuddin Psychiatry & Neurology · Little Rock, AR	33	120
PAI, BALAKRISHNA	28	46
KENCHAIAH, SATISH	21	58
Carey Guidry Diagnostic Radiology · Little Rock, AR	21	40
Ryan David Diagnostic Radiology · Little Rock, AR	20	58
Angela Casciano Diagnostic Radiology · Little Rock, AR	19	58

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