What is Gregory Gregg's specialty?

Gregory Gregg (NPI 1568575595) is a Medicare-billing provider whose primary specialty is Diagnostic Radiology in Springfield, IL.

Where does Gregory Gregg practice?

Gregory Gregg practices in Springfield, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1568575595.

How much does Medicare pay Gregory Gregg?

Gregory Gregg (NPI 1568575595) received approximately $56K in total Medicare Part B payments, serving 2,522 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1568575595

Gregory GreggM.D.

Diagnostic RadiologySpringfield, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,564

Unique beneficiaries

—

Total services

2,645

Distinct HCPCS

Medicare payment

$45K

Peer benchmark

Total Medicare services vs. 1,350 Diagnostic Radiology providers in IL — below median (cohort median 3,137).

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

No data available for this provider in 2025.

REFERRAL NETWORK

Where Gregory Gregg'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). 178 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ST JOHNS HOSPITAL OF THE HOSPITAL SISTERS OF THE THIRD ORDER OF ST F	1,246	2,386
ST FRANCIS HOSPITAL OF THE HOSPITAL SISTERS OF THE THIRD ORDER OF ST F	394	906
Sue Volarich Diagnostic Radiology · Springfield, IL	289	880
Nzeadibenma Uzochukwu Diagnostic Radiology · Springfield, IL	241	592
MEMORIAL MEDICAL CENTER	239	465
Vincent Zata Diagnostic Radiology · Springfield, IL	223	454
Anton Johnson Diagnostic Radiology · Springfield, IL	221	510
Theodore Gleason Diagnostic Radiology · Springfield, IL	220	475
Dean Collette Diagnostic Radiology · Springfield, IL	205	430
LITCHFIELD FAMILY PRACTICE CENTER	202	369
Shailesh Nandish Internal Medicine · Springfield, IL	165	326
ST ANTHONYS MEMORIAL HOSPITAL OF THE HOSPITAL SISTERS OF THE THIRD	158	282

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