What is Greg Marco's specialty?

Greg Marco (NPI 1427098433) is a Medicare-billing provider whose primary specialty is Critical Care (Intensivists) in Grand Rapids, MI.

Where does Greg Marco practice?

Greg Marco practices in Grand Rapids, MI, based on the location reported in the CMS Medicare provider datasets for NPI 1427098433.

How much does Medicare pay Greg Marco?

Greg Marco (NPI 1427098433) received approximately $18K in total Medicare Part B payments, serving 41 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1427098433

Greg MarcoMD

Critical Care (Intensivists)Grand Rapids, MII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$15K

Peer benchmark

Total Medicare services vs. 110 Critical Care (Intensivists) providers in MI — bottom quintile (cohort median 328).

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 · 2025

Total received

$236

Payment records

By payment type

Food and Beverage$236

Top paying entities

Food and Beverage$236

REFERRAL NETWORK

Where Greg Marco'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 · 63 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Christopher Buchach Diagnostic Radiology · Grand Rapids, MI	29	144
James Larson Diagnostic Radiology · Grand Rapids, MI	29	104
Craig Moore Diagnostic Radiology · Grand Rapids, MI	25	98
Kelly Ludema Diagnostic Radiology · Grand Rapids, MI	23	72
VELDKAMP, JAMES	23	102
NPI 1134205909	20	69
Gustavo Cumbo-Nacheli Pulmonary Disease · Grand Rapids, MI	19	68
Joshua Hoover Nurse Practitioner · Detroit, MI	19	59
Sangjin Lee Advanced Heart Failure and Transplant Cardiology · Grand Rapids, MI	19	133
Andrew Shin Diagnostic Radiology · Grand Rapids, MI	18	67
David Fermin Advanced Heart Failure and Transplant Cardiology · Grand Rapids, MI	17	80
Theodore Boeve Cardiology · Muskegon, MI	16	112

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
SPECTRUM HEALTH HOSPITALS	48	130
THORNBURG, BARBARA	39	255
VANDERKOLK, HENRY	33	145
Christopher Buchach Diagnostic Radiology · Grand Rapids, MI	33	136
Jeffrey Flermoen Diagnostic Radiology · Grand Rapids, MI	32	96
Peter Nye Diagnostic Radiology · Grand Rapids, MI	30	98
Craig Moore Diagnostic Radiology · Grand Rapids, MI	29	145
Mario Orsini Diagnostic Radiology · Grand Rapids, MI	29	141
QUICK, JOHN	28	83
James Larson Diagnostic Radiology · Grand Rapids, MI	27	89
LANCASTER, SCOTT	26	108
Laura Ross Diagnostic Radiology · Jackson, TN	25	77

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