What is Gary Gwertzman's specialty?

Gary Gwertzman (NPI 1871571679) is a Medicare-billing provider whose primary specialty is Vascular Surgery in Brooklyn, NY.

Where does Gary Gwertzman practice?

Gary Gwertzman practices in Brooklyn, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1871571679.

How much does Medicare pay Gary Gwertzman?

Gary Gwertzman (NPI 1871571679) received approximately $131K in total Medicare Part B payments, serving 580 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1871571679

Gary GwertzmanM.D.

Vascular SurgeryBrooklyn, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

902

Unique beneficiaries

—

Total services

1,192

Distinct HCPCS

Medicare payment

$91K

Peer benchmark

Total Medicare services vs. 316 Vascular Surgery providers in NY — above median (cohort median 1,108).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$13K

Distinct drugs

Brand share

67.6%

Top prescribed drugs

Apixaban23 claims

Triamcinolone Acetonide11 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$552

Payment records

By payment type

Food and Beverage$552

Top paying entities

Food and Beverage$552

REFERRAL NETWORK

Where Gary Gwertzman'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). 91 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
BETH ISRAEL MEDICAL CENTER	754	1,866
New York City Health And Hospitals Corporation Ambulance Service Provider · Brooklyn, NY	137	264
Alex Natanzon Cardiology · New York, NY	126	332
Howard Newhouse Cardiology · Brooklyn, NY	125	384
Murray Jonas Internal Medicine · Brooklyn, NY	122	334
LIPTON, MITCHELL	122	391
Jacob Nir Physical Medicine and Rehabilitation · Brooklyn, NY	114	181
Alexander Heisman Psychiatry · Manhasset, NY	97	181
NPI 1447349824	95	287
MIDWOOD AMBULANCE & OXYGEN SERVICE INC	94	283
Seniorcare Emergency Medical Services Inc. Ambulance Service Provider · Bronx, NY	93	181
Dmitriy Katkovskiy Emergency Medicine · Bronx, NY	91	156

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