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PROVIDER PROFILE · NPI 1740211275

John BartnikM.D.

PRACTICEONCOLOGY HEMATOLOGY ASSOCIATES OF SAGINAW VALLEY PCSee all providers at this practice →
Hematology-OncologySaginaw, MII
CROSS-REFERENCE

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QUALITY · MIPS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
Total Rx claims
1,226
Beneficiaries
—
Total drug cost
$5.2M
Distinct drugs
28
Brand share
25.4%
Top prescribed drugs
Anastrozole129 claims
Prochlorperazine Maleate97 claims
Letrozole86 claims
Ondansetron Hcl84 claims
Dexamethasone74 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$715
Payment records
29
By payment type
Food and Beverage$615
Education$100
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
1,160
Unique beneficiaries
—
Total services
21,247
Distinct HCPCS
26
Medicare payment
$382K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 228 Hematology-Oncology providers in MI — top quintile (cohort median 844).
REFERRAL NETWORK

Where John Bartnik'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). 82 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Peter Lassing
Diagnostic Radiology · Grand Rapids, MI
140955
Prakash Varadarajan
Hematology-Oncology · Kirkland, WA
1221,894
Amy Doornbos
Physician Assistant · Saginaw, MI
1141,811
Mobile Medical Response Inc
Ambulance Service Provider · Saginaw, MI
108722
Kristin Nelsen
Interventional Cardiology · Grand Rapids, MI
102781
SCHEURER HOSPITAL991,744
MCLAREN CARO REGION981,424
Chirdeep Bhutani
Interventional Radiology · Sacramento, CA
84537
Mark Ludka
Diagnostic Radiology · Saginaw, MI
80322
Nasser Qadri
Interventional Radiology · Fort Wayne, IN
77552
Gerard Farrar
Interventional Radiology · Grand Rapids, MI
74347
QUEST DIAGNOSTICS INCORPORATED MI73384
Refers patients to
Outbound — where patients go next
No outbound pairs above the suppression threshold.
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.