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PROVIDER PROFILE · NPI 1487651337

Daniel GrzegorekD.O.

PRACTICEANGELA S. LIMA S.C.See all providers at this practice →
Internal MedicineWillowbrook, ILI
CROSS-REFERENCE

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INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
QUALITY · MIPS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
Total Rx claims
10,723
Beneficiaries
—
Total drug cost
$479K
Distinct drugs
144
Brand share
16.8%
Top prescribed drugs
Atorvastatin Calcium786 claims
Levothyroxine Sodium607 claims
Amlodipine Besylate476 claims
Lisinopril388 claims
Losartan Potassium340 claims
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
3,839
Unique beneficiaries
—
Total services
5,431
Distinct HCPCS
32
Medicare payment
$254K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 3,790 Internal Medicine providers in IL — top quintile (cohort median 760).
REFERRAL NETWORK

Where Daniel Grzegorek'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). 105 inbound referrers · 78 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
ADVENTIST MIDWEST HEALTH173946
EDWARD HOSPITAL114257
Superior Air-Ground Ambulance Service, Inc
Ambulance Service Provider · Elmhurst, IL
107268
ADVENTIST MIDWEST HEALTH94375
Paul Freier
Internal Medicine · Hinsdale, IL
64298
BURGESS SQUARE HEALTHCARE AND REHABILITATION CENTRE, LLC56314
Laboratory Corporation Of America
Clinical Laboratory · Itasca, IL
47100
LUCAS MEDI-CAR INC46187
SOWA, ELIZABETH41441
Edward Ambulance Services Llc
Ambulance Service Provider · Naperville, IL
4062
Alan Nazerian
Diagnostic Radiology · Oak Brook, IL
3760
Barry Lessin
Diagnostic Radiology · Elmhurst, IL
3765
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
RESIDENTIAL HOSPICE ILLINOIS, LLC242461
Laboratory Corporation Of America Holdings
Clinical Laboratory · Dublin, OH
134349
ADVENTIST MIDWEST HEALTH120505
RESIDENTIAL HOSPICE ILLINOIS, LLC90310
MANOR CARE OF HINSDALE IL, LLC82437
ADVENTIST MIDWEST HEALTH51115
Symphony Diagnostic Services No 1 Llc
Portable X-Ray Supplier · Sparks, MD
49237
ADVENTIST MIDWEST HEALTH46188
SOWA, ELIZABETH43498
BURGESS SQUARE HEALTHCARE AND REHABILITATION CENTRE, LLC40172
Kristin Elliott
Nurse Practitioner · Westmont, IL
39454
Paul Freier
Internal Medicine · Hinsdale, IL
33107
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.