Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Marcus Wallace, MD

Individual provider Internal Medicine Physician · NPI 1841201860

Marcus Wallace, MD practises Internal Medicine in Hammond, Louisiana. Graduated from George Washington University School of Medicine in 2000, 26 years ago. Practices with St Tammany Parish Hospital Service District No 1, a 163-clinician group and accepts Medicare assignment. Licensed in Arizona and Louisiana.

Years since qualifying
26
Trained at
George Washington University School of Medicine
Licensed in
AZ, LA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

15790 Paul Vega Md Dr Hospital Medicine
Hammond, LA 70403-1434 Not confirmed with CMS for 12 years — call before visiting
Phone: (985) 230-3066
Fax: (985) 230-2072
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence MD.025294 (LA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 35540 (AZ)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD.025294 (LA)

Record details

NPI number1841201860
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 11, 2006
Last updated in NPPESFebruary 19, 2014

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2000 (26 years in practice)
Group practice St Tammany Parish Hospital Service District No 1 — 163 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients53
Services billed 93 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at St Tammany Parish Hospital Service District No 1

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 163 clinicians in the practice; 12 are shown here.

Other providers in Hammond