PROVIDER PROFILE · NPI 1649307000

Robert Greenfield

Internal MedicineFountain Valley, CAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

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 · 2024

Total received

$977

Payment records

By payment type

Travel and Lodging$505

Food and Beverage$472

REFERRAL NETWORK

Where Robert 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). 29 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ORANGE COAST MEMORIAL MEDICAL CENTER	201	439
Unilab Corporation Clinical Laboratory · West Hills, CA	94	230
Richard Wasley Diagnostic Radiology · Laguna Beach, CA	49	91
Michael Wang Diagnostic Radiology · Anaheim, CA	49	93
SCHIFF, STEVEN	48	97
Elliott Fankuchen Diagnostic Radiology · Laguna Beach, CA	48	115
SZYMANOWSKI, JEREMY	39	79
SUTHERLAND, JAMES	37	72
Jennifer Wong Cardiology · Fountain Valley, CA	35	62
Viney Soni Pulmonary Disease · Fountain Valley, CA	31	59
NPI 1407869076	22	36
Arvind Nirula Cardiology · Fountain Valley, CA	21	42

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