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PROVIDER PROFILE · NPI 1942477583

John MarkerM.D.

HospitalistNew Orleans, LAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
Total Rx claims
252
Beneficiaries
—
Total drug cost
$9K
Distinct drugs
14
Brand share
21.4%
Top prescribed drugs
Nifedipine30 claims
Pantoprazole Sodium28 claims
Carvedilol27 claims
Furosemide24 claims
Prednisone22 claims
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
165
Unique beneficiaries
—
Total services
283
Distinct HCPCS
4
Medicare payment
$25K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 195 Hospitalist providers in LA — below median (cohort median 314).
REFERRAL NETWORK

Where John Marker'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). 28 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
David Snyder
Clinical Cardiac Electrophysiology · Metairie, LA
94400
Lehman Preis
Cardiology · Metairie, LA
54204
Mary Lobrano
Diagnostic Radiology · Metairie, LA
51142
David St. Germain
Diagnostic Radiology · Metairie, LA
48135
Susan Fuzzard
Diagnostic Radiology · Metairie, LA
48159
Eric Gustafson
Hospitalist · New Orleans, LA
38108
Quest Diagnostics Clinical Laboratories Inc
Clinical Laboratory · Houston, TX
34122
Gary Menszer
Interventional Cardiology · Metairie, LA
3281
John Sandoz
Diagnostic Radiology · Metairie, LA
2987
Glenn Kelley
Internal Medicine · Metairie, LA
2877
John Joslyn
Diagnostic Radiology · Metairie, LA
2470
Craig Caplan
Emergency Medicine · Metairie, LA
2147
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.