What is Leland Lenahan's specialty?

Leland Lenahan (NPI 1770567117) is a Medicare-billing provider whose primary specialty is Emergency Medicine in Evergreen Park, IL.

Where does Leland Lenahan practice?

Leland Lenahan practices in Evergreen Park, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1770567117.

How much does Medicare pay Leland Lenahan?

Leland Lenahan (NPI 1770567117) received approximately $68K in total Medicare Part B payments, serving 526 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1770567117

Leland LenahanM.D.

PRACTICEOSF HEALTHCARE SYSTEMSee all providers at this practice →

Emergency MedicineEvergreen Park, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

757

Unique beneficiaries

—

Total services

796

Distinct HCPCS

Medicare payment

$66K

Peer benchmark

Total Medicare services vs. 2,228 Emergency Medicine providers in IL — top quintile (cohort median 344).

PRESCRIBING · PART D · 2024

Total Rx claims

208

Beneficiaries

—

Total drug cost

$1K

Distinct drugs

Brand share

47.6%

Top prescribed drugs

Levofloxacin45 claims

Oxycodone Hcl/Acetaminophen45 claims

Hydrocodone/Acetaminophen41 claims

Prochlorperazine Maleate29 claims

Methylprednisolone21 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 Leland Lenahan'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). 71 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Acadian Ambulance Service, Inc. Ambulance Service Provider · Lafayette, LA	385	1,158
Devin Tighe Diagnostic Radiology · Alexandria, LA	197	405
Michael Allen Diagnostic Radiology · Alexandria, LA	167	338
RAPIDES HEALTHCARE SYSTEM, L.L.C.	156	458
PROGRESSIVE ACUTE CARE DAUTERIVE, LLC	125	282
LARSON, PAUL	76	146
Christopher Ingram Cardiology · Natchitoches, LA	74	121
Donald Woolridge Diagnostic Radiology · Lake Charles, LA	64	118
Clinical Pathology Laboratories, Inc. Clinical Laboratory · Austin, TX	57	138
Dane Ponthier Physician Assistant · Pineville, LA	53	79
Douglas Council Nurse Practitioner · Marion, LA	48	64
Vikram Nijjar Cardiology · Alexandria, LA	46	119

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