What is Ronald Lenefsky's specialty?

Ronald Lenefsky (NPI 1588663546) is a Medicare-billing provider whose primary specialty is Internal Medicine in West Islip, NY.

Where does Ronald Lenefsky practice?

Ronald Lenefsky practices in West Islip, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1588663546.

How much does Medicare pay Ronald Lenefsky?

Ronald Lenefsky (NPI 1588663546) received approximately $203K in total Medicare Part B payments, serving 537 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1588663546

Ronald LenefskyMD

Internal MedicineWest Islip, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,277

Unique beneficiaries

—

Total services

1,961

Distinct HCPCS

Medicare payment

$194K

Peer benchmark

Total Medicare services vs. 7,864 Internal Medicine providers in NY — top quintile (cohort median 552).

PRESCRIBING · PART D · 2024

Total Rx claims

3,801

Beneficiaries

—

Total drug cost

$1.2M

Distinct drugs

Brand share

18.6%

Top prescribed drugs

Atorvastatin Calcium298 claims

Rosuvastatin Calcium231 claims

Losartan Potassium201 claims

Amlodipine Besylate185 claims

Hydrochlorothiazide180 claims

QUALITY · MIPS · 2024

Final MIPS score

93.1

Quality

79.8

Cost

0.0

Improvement activities

40.0

Promoting interop.

88.8

Payment adjustment

0.76%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$1K

Payment records

By payment type

Consulting Fee$1K

Top paying entities

Consulting Fee$1K

REFERRAL NETWORK

Where Ronald Lenefsky'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). 92 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
SOUTH SHORE UNIVERSITY HOSPITAL	251	480
Northwell Health Laboratories Clinical Laboratory · New Hyde Park, NY	207	541
Arif Dharsee Infectious Disease · Bay Shore, NY	155	319
Steven Wengrover Diagnostic Radiology · Bedford Hills, NY	131	294
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	120	207
Anastasios Manaris Clinical Cardiac Electrophysiology · West Islip, NY	80	137
Shahram Hormozi Cardiology · Hauppauge, NY	60	121
HUNTER EMS INC.	59	114
Brian Webber Diagnostic Radiology · West Islip, NY	56	164
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Melville, NY	51	156
NPI 1306807904	46	138
SUFFOLK RESTORATIVE THERAPY & NURSING, LLC	46	77

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