What is Darin Harnisch's specialty?

Darin Harnisch (NPI 1710910880) is a Medicare-billing provider whose primary specialty is Infectious Disease in Niles, IL.

Where does Darin Harnisch practice?

Darin Harnisch practices in Niles, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1710910880.

How much does Medicare pay Darin Harnisch?

Darin Harnisch (NPI 1710910880) received approximately $233K in total Medicare Part B payments, serving 750 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1710910880

Darin HarnischM.D.

Infectious DiseaseNiles, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,232

Unique beneficiaries

—

Total services

2,284

Distinct HCPCS

Medicare payment

$177K

Peer benchmark

Total Medicare services vs. 271 Infectious Disease providers in IL — top quintile (cohort median 701).

PRESCRIBING · PART D · 2024

Total Rx claims

291

Beneficiaries

—

Total drug cost

$518K

Distinct drugs

Brand share

48.1%

Top prescribed drugs

Doxycycline Hyclate60 claims

Emtricitabine/Tenofov Alafenam27 claims

Cefadroxil24 claims

Amoxicillin/Potassium Clav19 claims

Ethambutol Hcl18 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 Darin Harnisch'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). 147 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
PRESENCE CHICAGO HOSPITALS NETWORK	447	1,365
ADVOCATE HEALTH AND HOSPITALS CORPORATION	352	941
Sandhya Sathyakumar Infectious Disease · Niles, IL	241	547
Thomas Keane Interventional Radiology · Oak Brook, IL	202	545
SINGH, BHURJI	186	512
RAPOPORT, MYRA	173	443
Warren Brandwein Diagnostic Radiology · Chicago, IL	171	419
Superior Air-Ground Ambulance Service, Inc Ambulance Service Provider · Elmhurst, IL	152	331
Jeremy Simon Diagnostic Radiology · Chicago, IL	144	373
John Ciemins Diagnostic Radiology · Chicago, IL	134	363
SIEGFRIED, MICHAEL	117	307
John Phillips Diagnostic Radiology · Park Ridge, IL	116	276

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