Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John Derrick Marker, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1942477583

John Derrick Marker, MD is a Hospitalist in New Orleans, Louisiana. Graduated from Tulane University School of Medicine in 2008, 18 years ago. Practices with Belle Chasse Physician Services LLC, a 261-clinician group and accepts Medicare assignment. Licensed in Louisiana.

Years since qualifying
18
Trained at
Tulane University School of Medicine
Licensed in
LA
In the registry since
2008
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

New Orleans, LA
Fax: (504) 988-3971

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MD.204045 (LA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X
Internal Medicine Physician Taxonomy 207R00000X · Licence MD204045 (LA)

Record details

NPI number1942477583
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 13, 2008
Last updated in NPPESApril 3, 2017

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Also practisesINTERNAL MEDICINE
Medical schoolTULANE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2008 (18 years in practice)
Group practice Belle Chasse Physician Services Llc — 261 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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