What is Martin Greenfield's specialty?

Martin Greenfield (NPI 1205831443) is a Medicare-billing provider whose primary specialty is Endocrinology in New Hyde Park, NY.

Where does Martin Greenfield practice?

Martin Greenfield practices in New Hyde Park, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1205831443.

How much does Medicare pay Martin Greenfield?

Martin Greenfield (NPI 1205831443) received approximately $263K in total Medicare Part B payments, serving 474 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1205831443

Martin GreenfieldMD

EndocrinologyNew Hyde Park, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,478

Unique beneficiaries

—

Total services

8,210

Distinct HCPCS

Medicare payment

$227K

Peer benchmark

Total Medicare services vs. 627 Endocrinology providers in NY — top quintile (cohort median 837).

PRESCRIBING · PART D · 2024

Total Rx claims

4,445

Beneficiaries

—

Total drug cost

$2.1M

Distinct drugs

Brand share

57.4%

Top prescribed drugs

Levothyroxine Sodium348 claims

Empagliflozin318 claims

Levothyroxine Sodium280 claims

Metformin Hcl265 claims

Metformin Hcl236 claims

QUALITY · MIPS · 2024

Final MIPS score

82.1

Quality

72.1

Cost

75.8

Improvement activities

40.0

Promoting interop.

91.0

Payment adjustment

0.30%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$268

Payment records

By payment type

Food and Beverage$268

Top paying entities

Food and Beverage$268

REFERRAL NETWORK

Where Martin 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). 7 inbound referrers · 6 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Melville, NY	63	219
Northwell Health Laboratories Clinical Laboratory · New Hyde Park, NY	60	200
NORTH SHORE UNIVERSITY HOSPITAL	28	68
NPI 1093771602	17	78
Sunrise Medical Laboratories, Inc. Clinical Laboratory · Hicksville, NY	13	35
John Peters Cardiology · New Hyde Park, NY	11	37
ST. FRANCIS HOSPITAL	11	25

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Melville, NY	72	308
Northwell Health Laboratories Clinical Laboratory · New Hyde Park, NY	72	333
NORTH SHORE UNIVERSITY HOSPITAL	40	123
Daniel Appelbaum Cardiology · Lake Success, NY	18	83
LONG ISLAND JEWISH MEDICAL CENTER	16	37
ST. FRANCIS HOSPITAL	11	30

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