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PROVIDER PROFILE · NPI 1154439966

Karl ZimmermanMD

PRACTICEWILLOWDALE INTERNAL MEDICINE ASSOCIATES LLCSee all providers at this practice →
Internal MedicineKennett Square, PAI
CROSS-REFERENCE

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FACILITY AFFILIATIONS

Hospital & Facility Affiliations (6)

CCN 397012
Home health agency
CCN 397125
Home health agency
CCN 397472
Home health agency
CCN 398263
Home health agency
CCN 390111
Hospital
CCN 390179
Hospital
QUALITY · MIPS · 2024
Final MIPS score
92.0
Quality
81.7
Cost
0.0
Improvement activities
40.0
Promoting interop.
100.0
Payment adjustment
0.71%
APM Entity
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
2,847
Unique beneficiaries
—
Total services
3,956
Distinct HCPCS
26
Medicare payment
$233K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 4,434 Internal Medicine providers in PA — top quintile (cohort median 550).
PRESCRIBING · PART D · 2024
Total Rx claims
7,486
Beneficiaries
—
Total drug cost
$374K
Distinct drugs
116
Brand share
13.1%
Top prescribed drugs
Rosuvastatin Calcium732 claims
Amlodipine Besylate475 claims
Levothyroxine Sodium413 claims
Losartan Potassium287 claims
Atorvastatin Calcium257 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$90
Payment records
4
By payment type
Food and Beverage$90
REFERRAL NETWORK

Where Karl Zimmerman'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). 36 inbound referrers · 88 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
CHESTER COUNTY HOSPITAL3751,794
Quest Diagnostics Clinical Laboratories Inc
Clinical Laboratory · Norristown, PA
185555
Laboratory Corporation Of America Holdings
Clinical Laboratory · Raritan, NJ
99267
WEST GROVE HOSPITAL COMPANY LLC88384
Barry Smoger
Diagnostic Radiology · Philadelphia, PA
76218
William Barry
Diagnostic Radiology · West Chester, PA
63153
Tariq Quraishi
Diagnostic Radiology · Wilmington, DE
43134
Michael Ward
Otolaryngology · West Grove, PA
3592
Donna Reed
Cardiology · West Chester, PA
2962
James Judge
Ophthalmology · Coatesville, PA
2539
Jeffrey Gramp
Diagnostic Radiology · Radnor, PA
2543
Seth Haplea
Neurology · Kennett Square, PA
2573
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
CHESTER COUNTY HOSPITAL4402,502
Quest Diagnostics Clinical Laboratories Inc
Clinical Laboratory · Norristown, PA
157470
WEST GROVE HOSPITAL COMPANY LLC101521
Barry Smoger
Diagnostic Radiology · Philadelphia, PA
93298
Michele Zimmerman
Nurse Practitioner · Kennett Square, PA
75182
Brookside Clinical Laboratory Inc
Clinical Laboratory · Aston, PA
65476
Tariq Quraishi
Diagnostic Radiology · Wilmington, DE
56210
Laboratory Corporation Of America Holdings
Clinical Laboratory · Raritan, NJ
56130
William Barry
Diagnostic Radiology · West Chester, PA
55108
Michael Ward
Otolaryngology · West Grove, PA
47123
Mark Ludwick
Podiatry · Exton, PA
44172
NPI 17907219004174
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.