What is John Marker's specialty?

John Marker (NPI 1942477583) is a Medicare-billing provider whose primary specialty is Hospitalist in New Orleans, LA.

Where does John Marker practice?

John Marker practices in New Orleans, LA, based on the location reported in the CMS Medicare provider datasets for NPI 1942477583.

How much does Medicare pay John Marker?

John Marker (NPI 1942477583) received approximately $28K in total Medicare Part B payments, serving 92 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1942477583

John MarkerM.D.

HospitalistNew Orleans, LAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

165

Unique beneficiaries

—

Total services

283

Distinct HCPCS

Medicare payment

$25K

Peer benchmark

Total Medicare services vs. 195 Hospitalist providers in LA — below median (cohort median 314).

PRESCRIBING · PART D · 2024

Total Rx claims

252

Beneficiaries

—

Total drug cost

$9K

Distinct drugs

Brand share

21.4%

Top prescribed drugs

Nifedipine30 claims

Pantoprazole Sodium28 claims

Carvedilol27 claims

Furosemide24 claims

Prednisone22 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

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

Physician	Patients	Visits
David Snyder Clinical Cardiac Electrophysiology · Metairie, LA	94	400
Lehman Preis Cardiology · Metairie, LA	54	204
Mary Lobrano Diagnostic Radiology · Metairie, LA	51	142
David St. Germain Diagnostic Radiology · Metairie, LA	48	135
Susan Fuzzard Diagnostic Radiology · Metairie, LA	48	159
Eric Gustafson Hospitalist · New Orleans, LA	38	108
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Houston, TX	34	122
Gary Menszer Interventional Cardiology · Metairie, LA	32	81
John Sandoz Diagnostic Radiology · Metairie, LA	29	87
Glenn Kelley Internal Medicine · Metairie, LA	28	77
John Joslyn Diagnostic Radiology · Metairie, LA	24	70
Craig Caplan Emergency Medicine · Metairie, LA	21	47

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.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events