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PROVIDER PROFILE · NPI 1396817912

Jacek ZajacM.D.

EndocrinologyLombard, ILI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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QUALITY · MIPS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
Total Rx claims
5,790
Beneficiaries
—
Total drug cost
$2.0M
Distinct drugs
78
Brand share
43.8%
Top prescribed drugs
Metformin Hcl578 claims
Levothyroxine Sodium559 claims
Semaglutide370 claims
Dulaglutide263 claims
Empagliflozin262 claims
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
605
Unique beneficiaries
—
Total services
1,183
Distinct HCPCS
9
Medicare payment
$100K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 262 Endocrinology providers in IL — above median (cohort median 1,061).
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$4K
Payment records
223
By payment type
Food and Beverage$4K
Education$12
REFERRAL NETWORK

Where Jacek Zajac'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). 25 inbound referrers · 53 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
John Cahill
Interventional Cardiology · Elmhurst, IL
2873
Lawrence Barr
Interventional Cardiology · Elmhurst, IL
2875
SCHULTZ, KURT2679
LOYOLA UNIVERSITY MEDICAL CENTER26138
Aheed Siddiqi
Diagnostic Radiology · Downers Grove, IL
2653
Liza Lopez
Diagnostic Radiology · Downers Grove, IL
2272
WADAS, MARIE2163
Lee Dennis
Diagnostic Radiology · Elmhurst, IL
2138
Phillip Cozzi
Pulmonary Disease · Elmhurst, IL
1895
Pratik Parikh
Interventional Cardiology · Elmhurst, IL
1865
WEINBERG, JEROLD1828
Rajeev Bhorade
Diagnostic Radiology · Elmhurst, IL
1740
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
ELMHURST MEMORIAL HOSPITAL2571,285
ADVOCATE HEALTH AND HOSPITALS CORPORATION96383
Terrence Swade
Internal Medicine · Lombard, IL
49180
David Wasserman
Diagnostic Radiology · Elmhurst, IL
4293
Aloyzas Pakalniskis
Diagnostic Radiology · Elmhurst, IL
3378
Cash Casey
Clinical Cardiac Electrophysiology · Elmhurst, IL
31113
WADAS, MARIE3083
Vivek Dave
Diagnostic Radiology · Elmhurst, IL
3059
WEINBERG, JEROLD2974
SCHULTZ, KURT2857
Elmer Murdock
Interventional Cardiology · Elmhurst, IL
2691
Superior Air-Ground Ambulance Service, Inc
Ambulance Service Provider · Elmhurst, IL
2638
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.