caretrace.iopowered by▸healthparse
SearchCohort Builder
Tools▾
KOL FinderTerritoriesDrug Compare
AI Query
Browse▾
By stateBy specialty
Pricing
SearchCohort BuilderToolsKOL FinderTerritoriesDrug CompareAI QueryBrowseBy stateBy specialtyPricing
PROVIDER PROFILE · NPI 1356351845

William ZimmermannM.D.

PRACTICEMSMC INVESTORS LLCSee all providers at this practice →
AnesthesiologyRockford, ILI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
QUALITY · MIPS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
No data available for this provider in 2024.
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
51
Unique beneficiaries
—
Total services
52
Distinct HCPCS
4
Medicare payment
$6K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 1,674 Anesthesiology providers in IL — below median (cohort median 208).
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where William Zimmermann'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). 5 inbound referrers · 17 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
PRESENCE CENTRAL AND SUBURBAN HOSPITALS NETWORK80106
Raza Hamdani
Gastroenterology · Aurora, IL
1451
COPLEY MEMORIAL HOSPITAL, INC.1321
Michael Grimm
Nurse Practitioner · Aurora, IL
1214
Sunita Koul
Hospitalist · Naperville, IL
1120
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
Kendall Pointe Surgery Center Llc
Ambulatory Surgical Center · Oswego, IL
5273
PRESENCE CENTRAL AND SUBURBAN HOSPITALS NETWORK2737
Robert Foody
Ophthalmology · Aurora, IL
2359
Samir Gupta
Pathology · Joliet, IL
2228
Juan Bonilla
Thoracic Surgery · Aurora, IL
1736
Samra Hashmi
Ophthalmology · Joliet, IL
1653
James Studlo
Diagnostic Radiology · Aurora, IL
1622
Stephen Kim
Diagnostic Radiology · Fort Worth, TX
1519
Jaweed Sayeed
Interventional Cardiology · New Braunfels, TX
1421
Basharat Muneer
Cardiology · Aurora, IL
1326
RIFENBURG, NANCY1318
Navinchandra Dodhia
Nephrology · Aurora, IL
1242
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.