What is Marshall Posner's specialty?

Marshall Posner (NPI 1700847753) is a Medicare-billing provider whose primary specialty is Medical Oncology in New York, NY.

Where does Marshall Posner practice?

Marshall Posner practices in New York, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1700847753.

How much does Medicare pay Marshall Posner?

Marshall Posner (NPI 1700847753) received approximately $38K in total Medicare Part B payments, serving 80 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1700847753

Marshall PosnerMD

Medical OncologyNew York, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

152

Distinct HCPCS

Medicare payment

$17K

Peer benchmark

Total Medicare services vs. 506 Medical Oncology providers in NY — above median (cohort median 458).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$749

Distinct drugs

Brand share

12.6%

Top prescribed drugs

Levothyroxine Sodium76 claims

Ondansetron11 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$12K

Payment records

By payment type

Travel and Lodging$8K

Consulting Fee$4K

Food and Beverage$634

Top paying entities

Travel and Lodging$8K

Consulting Fee$4K

Food and Beverage$634

REFERRAL NETWORK

Where Marshall Posner'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). 3 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Krzysztof Misiukiewicz Medical Oncology · New York, NY	21	628
NPI 1487654703	16	71
Lale Kostakoglu Shields Nuclear Medicine · Charlottesville, VA	11	43

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