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

Dr. Mark Britt Holder, MD

Individual provider Internal Medicine Physician · NPI 1861452260

Dr. Mark Britt Holder, MD is an Emergency Medicine in Huntsville, Alabama. Graduated from Louisiana State University School of Medicine in New Orleans in 2000, 26 years ago. Practices with Allegiance Hospital of Many, LLC, a 39-clinician group and accepts Medicare assignment. Licensed in Alabama.

Years since qualifying
26
Trained at
Louisiana State University School of Medicine in New Orleans
Licensed in
AL
In the registry since
2006
Specialties on file
2
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

101 Sivley Rd SW
Huntsville, AL 35801-4421
Phone: (256) 265-3880
Fax: (256) 265-3886
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 26900 (AL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 26900 (AL)

Record details

NPI number1861452260
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 28, 2006
Last updated in NPPESApril 20, 2017

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolLOUISIANA STATE UNIVERSITY SCHOOL OF MEDICINE IN NEW ORLEANS
Graduated 2000 (26 years in practice)
Group practice Allegiance Hospital Of Many, Llc — 39 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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