What is Greg Marrinan's specialty?

Greg Marrinan (NPI 1942295506) is a Medicare-billing provider whose primary specialty is Diagnostic Radiology in Shelton, CT.

Where does Greg Marrinan practice?

Greg Marrinan practices in Shelton, CT, based on the location reported in the CMS Medicare provider datasets for NPI 1942295506.

How much does Medicare pay Greg Marrinan?

Greg Marrinan (NPI 1942295506) received approximately $135K in total Medicare Part B payments, serving 1,737 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1942295506

Greg MarrinanMD

PRACTICEADVANCED RADIOLOGY PARTNERS LLCSee all providers at this practice →

Diagnostic RadiologyShelton, CTI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,051

Unique beneficiaries

—

Total services

12,086

Distinct HCPCS

Medicare payment

$107K

Peer benchmark

Total Medicare services vs. 477 Diagnostic Radiology providers in CT — top quintile (cohort median 2,737).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

34.4

Quality

22.9

Cost

0.0

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

-4.87%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Greg Marrinan'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). 154 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Quest Diagnostics Llc Clinical Laboratory · Wallingford, CT	343	886
American Medical Response Of Connecticut Incorporated Ambulance Service Provider · New Haven, CT	293	762
Neda Yagan Diagnostic Radiology · Eden Prairie, MN	94	207
NPI 1467474783	89	195
Adam Federman Diagnostic Radiology · Trumbull, CT	87	171
Shelley Goodstine Diagnostic Radiology · Shelton, CT	84	155
NPI 1063440428	81	165
Scott Williams Diagnostic Radiology · Shelton, CT	79	189
Linda Casale Cardiology · Fairfield, CT	74	131
Philip Simkovitz Pulmonary Disease · Trumbull, CT	73	190
Terence Hughes Diagnostic Radiology · Shelton, CT	72	158
Michele Even Diagnostic Radiology · Trumbull, CT	71	133

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