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PROVIDER PROFILE · NPI 1235334137

John MaciejewskiM.D.

PRACTICEUNIVERSITY OF MICHIGANSee all providers at this practice →
HematologyAnn Arbor, MII
CROSS-REFERENCE

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OIG/SAM exclusion screening, sanctions history
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QUALITY · MIPS · 2024
No data available for this provider in 2024.
FACILITY AFFILIATIONS

Hospital & Facility Affiliations (2)

CCN 230046
Hospital
CCN 360068
Hospital
PRESCRIBING · PART D · 2024
Total Rx claims
222
Beneficiaries
—
Total drug cost
$89K
Distinct drugs
10
Brand share
20.3%
Top prescribed drugs
Acyclovir63 claims
Azithromycin30 claims
Ursodiol26 claims
Sulfamethoxazole/Trimethoprim20 claims
Levofloxacin19 claims
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
104
Unique beneficiaries
—
Total services
413
Distinct HCPCS
5
Medicare payment
$38K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 34 Hematology providers in MI — above median (cohort median 318).
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$215
Payment records
1
By payment type
Food and Beverage$215
REFERRAL NETWORK

Where John Maciejewski'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). 14 inbound referrers · 17 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Sunita Nathan
Hematopoietic Cell Transplantation and Cellular Therapy · Chicago, IL
722,030
Robert Decresce
Pathology · Chicago, IL
53583
MAHON, BRETT42317
NPI 119478307628136
John Meyer
Diagnostic Radiology · Chicago, IL
24100
Palmi Shah
Diagnostic Radiology · Chicago, IL
21362
LOEW, JEROME20103
STEIN, BRIAN17161
Lisa Boggio
Hematology-Oncology · Chicago, IL
12183
KOVACH, JULIE1175
Stephanie Shors
Diagnostic Radiology · Chicago, IL
1185
Jacqueline Baptista
Nurse Practitioner · Chicago, IL
11110
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
RUSH UNIVERSITY MEDICAL CENTER1282,341
Antonio Jimenez Jimenez
Hematology-Oncology · Miami, FL
571,137
Sunita Nathan
Hematopoietic Cell Transplantation and Cellular Therapy · Chicago, IL
532,035
MAHON, BRETT30130
Robert Decresce
Pathology · Chicago, IL
30298
Palmi Shah
Diagnostic Radiology · Chicago, IL
23355
NPI 119478307623131
Ira Miller
Pathology · Chicago, IL
2283
LOEW, JEROME1967
STEIN, BRIAN1781
John Meyer
Diagnostic Radiology · Chicago, IL
17108
Ryan Braun
Diagnostic Radiology · Chicago, IL
1686
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.