What is John Lesniak's specialty?

John Lesniak (NPI 1912979451) is a Medicare-billing provider whose primary specialty is Family Practice in Hartland, WI.

Where does John Lesniak practice?

John Lesniak practices in Hartland, WI, based on the location reported in the CMS Medicare provider datasets for NPI 1912979451.

How much does Medicare pay John Lesniak?

John Lesniak (NPI 1912979451) received approximately $53K in total Medicare Part B payments, serving 278 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1912979451

John LesniakM.D.

Family PracticeHartland, WII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

532

Unique beneficiaries

—

Total services

655

Distinct HCPCS

Medicare payment

$45K

Peer benchmark

Total Medicare services vs. 2,096 Family Practice providers in WI — above median (cohort median 478).

PRESCRIBING · PART D · 2024

Total Rx claims

5,305

Beneficiaries

—

Total drug cost

$305K

Distinct drugs

Brand share

17.9%

Top prescribed drugs

Atorvastatin Calcium464 claims

Pravastatin Sodium299 claims

Lisinopril241 claims

Amlodipine Besylate204 claims

Losartan Potassium200 claims

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 John Lesniak'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). 7 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PROHEALTH OCONOMOWOC MEMORIAL HOSPITAL, INC.	33	151
Catherine Way Family Practice · Hartland, WI	25	66
Gary Beyer Diagnostic Radiology · Waukesha, WI	15	20
KALUSH, LARA	12	51
Jennifer Bergin Diagnostic Radiology · Waukesha, WI	12	25
William Burns Cardiology · Waukesha, WI	12	47
David Roelke Diagnostic Radiology · Waukesha, WI	11	16

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