What is Ronald Grenko's specialty?

Ronald Grenko (NPI 1861454571) is a Medicare-billing provider whose primary specialty is Pathology in Lancaster, PA.

Where does Ronald Grenko practice?

Ronald Grenko practices in Lancaster, PA, based on the location reported in the CMS Medicare provider datasets for NPI 1861454571.

How much does Medicare pay Ronald Grenko?

Ronald Grenko (NPI 1861454571) received approximately $50K in total Medicare Part B payments, serving 674 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1861454571

Ronald GrenkoMD

PRACTICELANCASTER GENERAL HEALTHSee all providers at this practice →

PathologyLancaster, PAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,149

Unique beneficiaries

—

Total services

1,836

Distinct HCPCS

Medicare payment

$49K

Peer benchmark

Total Medicare services vs. 593 Pathology providers in PA — above median (cohort median 1,465).

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

$38

Payment records

By payment type

Food and Beverage$38

Top paying entities

Food and Beverage$38

REFERRAL NETWORK

Where Ronald Grenko'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). 67 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
LANCASTER GENERAL HOSPITAL	614	1,618
Melissa Mckernan Pulliam Clinical Cardiac Electrophysiology · Lancaster, PA	72	104
John Briguglio Diagnostic Radiology · Hershey, PA	44	68
Jeffrey Kramer Diagnostic Radiology · Allentown, PA	41	56
Keith Haidet Diagnostic Radiology · Hershey, PA	32	42
TURULA, JON	31	36
Robert Gress Diagnostic Radiology · Lancaster, PA	30	44
Lancaster Emergency Medical Services Association Ambulance Service Provider · Millersville, PA	30	39
Maurice Perry Diagnostic Radiology · Lancaster, PA	28	38
Patrick Weybright Diagnostic Radiology · Lancaster, PA	27	39
KOCH, PAMELA	27	35
Matthew Wiggins Diagnostic Radiology · Lancaster, PA	26	34

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